PHILADELPHIA, Dec. 17, 2020 /PRNewswire/ --Immunotherapies, such as checkpoint inhibitor drugs, have made worlds of difference for the treatment of cancer. Most clinicians and scientists understand these drugs act on what's known as the adaptive immune system, the T cells and B cells that respond to specific threats to the body.

New research from a team co-led by Penn Dental Medicine's George Hajishengallis suggests that the innate immune system, which responds more generally to bodily invaders, may be an important yet overlooked component of immunotherapy's success.

Their work, published in the journal Cell, found that "training" the innate immune system with -glucan, a compound derived from fungus, inspired the production of innate immune cells, specifically neutrophils, that were programmed to prevent or attack tumors in an animal model.

"The focus in immunotherapy is placed on adaptive immunity, like checkpoint inhibitors inhibit the interaction between cancer cells and T cells," says Hajishengallis. "The innate immune cells, or myeloid cells, have not been considered so important. Yet our work suggests the myeloid cells can play a critical role in regulating tumor behavior."

The current study builds on earlier work by Hajishengallis and a multi-institutional team of collaborators, which showed that trained immunity, elicited through exposure to the fungus-derived compound -glucan, could improve immune recovery after chemotherapy in a mouse model.

In that previous study, the researchers also showed that the "memory" of the innate immune system was held within the bone marrow, in hematopoietic stem cells that serve as precursors of myeloid cells, such as neutrophils, monocytes, and macrophages.

The team next wanted to get at the details of the mechanism by which this memory was encoded. "The fact that -glucan helps you fight tumors doesn't necessarily mean it was through trained immunity," says Hajishengallis.

To confirm that link, the researchers isolated neutrophils from mice that had received the innate immune training via exposure to -glucan and transferred them, along with cells that grow into melanoma tumors, to mice that had not received -glucan. Tumor growth was significantly dampened in animals that received cells from mice that had been trained.

-glucan is already in clinical trials for cancer immunotherapy, but the researchers say this finding suggests a novel mechanism of action with new treatment approaches.

"This is a breakthrough concept that can be therapeutically exploited for cancer immunotherapy in humans," Hajishengallis says, "specifically by transferring neutrophils from -glucan-trained donors to cancer patients who would be recipients."

Contact: Beth Adams, [emailprotected]

SOURCE Penn Dental Medicine

http://www.dental.upenn.edu

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Priming the Immune System to Fight Cancer - PRNewswire

Bone Marrow Stem Cells Comments Off on Priming the Immune System to Fight Cancer – PRNewswire | December 17th, 2020

Today, we take an in-depth look at an intriguing development concern with one product approved and on the market and more importantly a more lucrative candidate that appears on its way to approval in Europe. A full analysis on this Busted IPO follows in the paragraphs below.

Orchard Therapeutics (ORTX) is a London, United Kingdom-based biopharmaceutical company that IPO'd in 2018. The company is focused on developing gene therapies for rare conditions. In 2018, Orchard acquired GSK's rare disease gene therapy portfolio, which originated from a collaboration between GSK and the San Raffaele Telethon Institute for Gene Therapy. The company's unique approach involves inserting a working copy of the missing or malfunctioning gene into a patient's own blood stem cells. This approach circumvents the need for a bone marrow transplant since it leverages blood stem cells intrinsic capacity to self-renew in a patient's bone marrow and produce new blood cells of all types. The company's overarching goal is to permanently correct genetic disorders via a single treatment.

The company does have one approved product called Strimvelis, which is indicated for patients with severe combined immunodeficiency due to adenosine deaminase deficiency for whom no suitable human leukocyte antigen matched related stem cell donor is available; however, the drug has only been approved by the EMA and not the FDA. The company's pipeline is candidate rich, spanning a variety of indications that are compartmentalized into three categories: neurometabolic/neurodegenerative disorders, immunological disorders, and blood disorders. The company has a couple of late-stage candidates. Orchard Therapeutics has a market capitalization of roughly $450 million and trades for approximately $4.50 a share.

Pipeline

Source: Company Presentation

OTL-200

OTL-200 is an ex vivo autologous gene therapy in development to treat metachromatic leukodystrophy. The drug uses a modified virus to insert an operational copy of the ARSA gene into a patient's cells. OTL-200 has received rare pediatric disease designation from the FDA. MLD is a rare and deadly inherited disease. The disease is characterized by the accumulation of fats called sulfatides, which causes a breakdown in the protective fatty layer surrounding nerves in the central and peripheral nerve systems. It is estimated that 1 in 40,000 to 1 in 160,000 people have the disease worldwide. OTL-200 was developed in partnership with the San Raffaele Telethon Institute for Gene Therapy.

Source: Company Presentation

On October 16th, the company announced that it received a positive CHMP opinion for the drug, which recommended full marketing authorization for the treatment of early-onset metachromatic leukodystrophy patients in the European Union. The positive opinion will now be reviewed by the European Commission. A final decision is expected by the end of 2020. If approved, the company would be targeting a launch in the first half of 2021.

Furthermore, the company is pursuing a regenerative medicine advanced therapy designation, and it filed an investigational new drug application or IND in the U.S., which was accepted by the FDA on November 19th. Orchard has also applied for Regenerative Medicine Advanced Therapy designation for OTL-200 to help facilitate additional dialogue with the FDA

In addition, within the neurometabolic/neurodegenerative disorders category, it was announced in September that the European Medicines Agency has granted Priority Medicines designation to OTL-203 for the treatment of mucopolysaccharidosis type I. This comes not long after 203 received Orphan Drug designation in the U.S.

Source: Company Presentation

OTL-103

OTL-103 is an ex vivo autologous gene therapy in development to treat Wiskott-Aldrich syndrome. The drug uses a modified virus to insert a working copy of the WAS gene into a patient's cells. WAS is a rare, X-linked, recessive, inherited immune disorder, which is characterized by reoccurring severe infections, autoimmunity, eczema and severe bleeding episodes. The company has received Rare Pediatric Disease designation and Regenerative Medicine Advanced Therapy designation from the FDA. OTL-103 is being developed in partnership with the San Raffaele Telethon Institute for Gene Therapy.

Looking ahead, the company is preparing to file a BLA in the U.S. and an MAA in the EU for OTL-103 in WAS in 2021.

Source: Company Presentation

As of September 30th, 2020, Orchard Therapeutics had cash and cash equivalents of $41.1 million compared to $19 million on December 31st, 2019. Research and development expenses for the third quarter were $14.6 million compared to $28.4 million in Q3 of 2019. Selling, general and administrative expenses were $12.9 million in the quarter compared to $14.2 million in the same quarter of 2019. The company did $1.9 million in product revenue for the quarter compared to $1.9 million in Q3 of 2019. Overall, the company reported a net loss of $20.2 million compared to a net loss of $36.7 million in Q3 of 2019. Management stated in the latest quarterly update that it expects its current financial position to cover its anticipated operating and capital expenditure requirements into 2022.

The company is sparsely covered in the United States despite a healthy market cap as our most names in this space domiciled overseas. The most recent recommendation comes from Oppenheimer on September 14th. The firm lowered its price target from $26 a share to $16 a share, but it maintained its overweight rating. The analyst stated that the updated price target reflects a more subdued opinion on the pace of pipeline development for MPS-1 and MPS-IIIA. It reiterated this rating on November 19th.

Both Barclays ($13 price target, down from $15 previously) and Goldman Sachs ($9 price target, down from $13) reiterated Buy ratings on ORTX albeit revising the price targets lower. Finally, on May 22nd, JPMorgan lowered its price target from $26 a share to $17 a share and maintained its overweight rating. The analyst's note did seem upbeat despite the lowered price target in that the analyst thinks that the company's pipeline possesses "broad potential".

Two things prevent Orchard from being considered for a large holding. First, the company looks like it will have to raise additional capital in the very near future. I think the company will raise capital immediately after the next positive news event. Second, overseas biotech concerns don't ever seem to get the attention from analysts or valuation from investors that companies domiciled in the States do. That said, the company has multiple shots on goal and definable potential catalysts on the near-term potential. Add in the possible wildcard of being a potential buyout target at some point, and ORTX would seem worthy of a small "watch item" stake at this time.

Bret Jensen is the Founder of and authors articles for the Biotech Forum, Busted IPO Forum, and Insiders Forum.

Author's note: I present and update my best small-cap Busted IPO stock ideas only to subscribers of my exclusive marketplace, The Busted IPO Forum. Our model portfolio has crushed the return of the Russell 2000 since its launch in the summer of 2017. To join the Busted IPO Forum community, just click on the logo below.

Disclosure: I am/we are long ORTX. I wrote this article myself, and it expresses my own opinions. I am not receiving compensation for it (other than from Seeking Alpha). I have no business relationship with any company whose stock is mentioned in this article.

Originally posted here:
Our View On Orchard Therapeutics - Seeking Alpha

Bone Marrow Stem Cells Comments Off on Our View On Orchard Therapeutics – Seeking Alpha | December 17th, 2020

Osteonecrosis of the femoral head (ONFH) is a refractory disease characterized by compromised subchondral microcirculation, bone necrosis, and microfracture accumulation without sustained compensatory remodeling.1 Its complex etiology, variability in location (lateral, medial, or central), intra-bone edema, and inflammation add to the unpredictable prognosis. Although few patients regress spontaneously, the progressive nature and lack of curative treatment for ONFH thus far are the challenges faced in the management of ONFH.

Osteonecrosis of the femoral head typically affects relatively young, active individuals between 20 and 40 years old and follows an unrelenting course resulting in substantial loss of function.2 The Indian Society of Hip and Knee Surgeons' Registry stated that 49% of total hip arthroplasty procedures in India are due to an irreversible stage of ONFH.3 Osteonecrosis of the femoral head is idiopathic in most cases. Steroid and alcohol consumption are the second most common causes.4 The term silent hip refers to an asymptomatic hip in patients with ONFH of the contralateral hip and is at risk of developing ONFH.5

Hip and groin pain and limp when patients walk are primary indicators. Radiography, magnetic resonance imaging (MRI), and computed tomography are tools for diagnosis, prognosis, and decision-making regarding treatment of ONHF. Crescent formation, collapse and anterolateral sequestration on radiographs, and a double line presentation on T2-weighted MRI provide confirmation of ONFH diagnosis.

The Ficat and Arlet staging of ONFH from I to IV indicates the progressive involvement and progression of the femoral head toward arthritis.6 However, it does not allow prediction of the possibility of progression. Ficat and Arlet stage I with extensive involvement of the femoral head will have a high chance of further progression to collapse. Steinberg grades of ONFH allow prediction of the possibility of progression to collapse in a precollapse hip.7 The Association Research Circulation Osseous (ARCO) takes into consideration the location of the crescent, amount of cartilage depression, and the area and volume of the femoral head affected as reliable predictors of prognosis in early stage ONFH and is helpful for identifying a femoral head at risk of progression and collapse.8

The most common surgical intervention in early stage ONFH is core decompression.9 However, core decompression is notable for its lack of effectivity in preventing collapse in cases where progression is most likely to happen (ie, in cases where there is extensive involvement [more than 30%] of the anterolateral region of the femoral head and crescent sign).10 Among other surgical interventions, fibular graft (vascularized or nonvascularized) proximal femoral osteotomy has been described.11

Hernigou and Beaujean12 reported abnormalities in the mesenchymal stem cell pool, which is known for its regenerative potential, following insult to the affected hip. Gangji et al13 later reported qualitative and quantitative abnormalities of osteoblast cells within the proximal femur in ONFH patients. Thus, it is accepted that the regenerative and reparative capacity of bone in ONFH is severely compromised. However, more than two decades of experience using various orthobiologics has not been convincingly satisfying, and many groups have expressed limitations of these therapies.1416

The pathology of ONFH involves ischemic imbalance of bone remodeling due to relatively enhanced osteoclastic action and poor regenerative potential of osteogenic cells in the proximal femur. The supply of differentiated osteogenic cells (osteoblasts) over time would result in arrest of ONFH progression. Core decompression would allow revascularization, and debridement of necrotic bone decreases the time needed for creeping substitution of new bone over dead bone. With this theoretical conviction, the author planned to use and assess the efficacy of autologous bone marrowderived cultured osteoblasts following core decompression and debridement in the treatment of patients diagnosed with ARCO stages II and III ONFH.

The surgeries were conducted at various hospitals. Fifteen patients (13 male and 2 female), with a mean age of 32 years (range, 2161 years), presented with typical ONFH symptoms. Patients were diagnosed with ARCO stage II or III ONFH (9 bilateral and 6 unilateral, for a total of 24 hips) on radiograph and MRI, and were considered for a predesigned treatment protocol that involved implantation of autologous cultured osteoblasts following core decompression and debridement.

Patient consent for inclusion in the study was obtained. The types of ONFH were idiopathic (8 patients), corticosteroid-induced (6 patients), and traumatic (1 patient) (Table 1). Efficacy of the treatment was assessed based on changes on radiograph and MRI and modified Harris Hip Score (mHHS), Oxford Hip Score (OHS), and visual analog scale (VAS) score after treatment. In a few patients, computed tomography also was performed.

Table 1:

Patient Characteristics

Treatment was performed in 2 steps.

Step 1. Percutaneous bone marrow aspiration from the iliac crest was performed and collected in transport media containing anticoagulant. This was transported under temperature-monitored conditions and processed at a good manufacturing practicecertified cell processing facility to obtain a predefined osteoblast culture (4 to 5 weeks).

The ex vivo culture of osteoblasts using bone marrow from the patient involved isolation of osteoprogenitor cells, osteogenic differentiation, and then expansion. Immunophenotypic characterization was performed to ensure the cultured cells tested positive for CD44+ and CD151+ markers. Alizarin red stain test ensured the presence of calcium deposits within the osteoblasts. Alkaline phosphatase test was used as an indicator of ability to form type I collagen.

Thus, ex vivo cultured live osteoblast cells, not less than 45 million, were filled and packed in sterile vials with appropriate transport/culture medium and were made available for individualized treatment. The cell viability was ensured during transport as well as after implant until the cells were integrated.

Step 2. The surgical implantation was planned as per the availability of cultured and expanded osteoblasts (4 to 5 weeks). In the first 3 patients, the osteoblast implant was performed soon after core decompression, whereas for the remaining 12 patients, core decompression was followed by debridement with implantation.

The location of the necrotic zone and its size was approximated on MRI. The patient was placed on a fracture table, and the C-arm was positioned as for routine core decompression. The entry point of the guidewire (2.5 mm) was chosen around the vastus ridge to allow faster healing in the cancellous bone (Figure 1).

Figure 1:

Surgical process details. The arrow indicates the high entry point of the guidewire at the vastus ridge targeting the area of osteonecrosis. A, 1-cm distance from the superior cortex to prevent fracture. B, varus appearance of the proximal femur due to mild flattening of the femoral head in the anterolateral femur in early osteonecrosis of the femoral head. This is the earliest sign observed radiographically and is indicative of stage IIB.

The larger sagittal dimensions of the trochanteric area allowed for a posterior entry point to avoid a possible subtrochanteric fracture due to posterior cortical breaching during or after intervention. Special effort was made to avoid a subtrochanteric entry point. On no occasion was the posterior cortex of the femur violated. The guidewire was passed in the center of the lesion but at least 1 cm from the superior cortex. An 8-mm cannulated core drill (from the dynamic hip screw set) was used over the wire to make a tunnel until the necrotic zone. The steps of the surgical intervention are shown in Figure 2.

Figure 2:

Surgical steps. Anteroposterior C-arm image of the hip with guidewire (A). Lateral C-arm image of the hip with guidewire (B). Drilling with 8-mm dynamic hip screw core drill bit (C). Anteroposterior C-arm image during curettage (D).

The tip of the drill, when removed, showed necrotic bone (Figure 3A), which was later sent for histopathology. Bone curettes of various sizes and angles then were used to curette the sequestrum under imaging guidance. The end point of curettage was the removal of hard sclerotic bone from the femoral head. If there was a bony ridge that was difficult to curette, a reamer was used. The author attempted to leave 1 cm of subchondral bone intact to allow faster revascularization of the femoral head by removing dead sclerotic bone. Curettes were kept at least 1 cm from the joint line.

Figure 3:

Drill bit with debrided live and dead bone (A). Instruments used during surgery (B).

After curettage was complete, the tunnel was plugged using an allograft of appropriate size. All of the instruments used during surgery are shown in Figure 3B. At this point, the patient was tilted to attain a gravity-dependent position of the operative hip to avoid any backflow of the implanted cells. A spinal needle was inserted through the small hole made in the allograft plug, and the osteoblast cell gel mixture was slowly injected in the space within the femoral head. Patients were held in the same position for approximately 10 minutes to allow the cells to settle without spilling.

Postoperatively, patients were partial weight bearing for 4 weeks using a walker. They progressed to using a walking stick by week 6, and then full weight bearing was permitted by week 8. For patients treated for bilateral ONFH, use of a walker was encouraged until week 6. Physical exercises to regain muscle strength and all hip joint movements were encouraged as soon as possible.

All patients underwent regular follow-up during the rehabilitation period and thereafter at 6, 12, and 18 months, with all anteroposterior and lateral radiographs of the hip and magnetic resonance imaging completed at 18 months. Two patients were lost to follow-up thereafter, and 13 patients continued with regular follow-up visits; 3 patients had follow-up of 7 years.

At 18 months after implant, no disease progression was observed on radiographs and MRIs for all patients. Postoperative mHHS, OHS, and VAS scores improved, and all of the patients had resumed normal routine activities and daily chores. Analysis of variance for HHS, OHS, and VAS scores showed a statistically significant difference (individual as well as mean values) from baseline to 18 months after implantation (P<.5; Table 2). Three patients who underwent follow-up for 7 years after implantation were assessed via telephone for HHS and VAS scores. For 1 of these patients, HHS improved from 90 to 95, and VAS score improved from 3 to 1 at 18 months. For another patient, HHS improved from 85 to 95, and VAS score improved from 2 to 1 at 18 months. One of the patients who underwent follow-up for 7 years walked daily for 3 to 4 km.

Table 2:

Pain and Function-Related Scores

One male patient who was treated for bilateral ONFH with follow-up of 5 years showed good improvement in HHS (from 65 to 92.5) at the end of 18 months, and his VAS score improved from 9 at baseline to 3 in both hips at 18 months after treatment. At 5 years postoperatively, he reported pain only after sitting for several hours and was more comfortable using a cane when walking.

Another male patient was diagnosed with ARCO stage III of the right hip. He had extensive involvement of the central and lateral lesion (>50%) with crescent depression less than 2 mm. Although reports for direct comparison were not available at 6 years after treatment, radiographs showed no further progression, with intramedullary changes evident. The joint space was preserved, which is consistent with good clinical function (Figure 4).

Figure 4:

Patient M4. Preoperative magnetic resonance image of Association Research Circulation Osseous stage III of the right hip. Extensive involvement of the central and lateral regions (>50%), with the crescent having less than 2 mm of depression (A, B). Magnetic resonance image at 5 months after treatment (C). Preoperative anteroposterior radiograph (D). Anteroposterior radiograph at 6 years after treatment showing no further progression, with evident intramedullary changes. The joint space is preserved, which is consistent with good clinical function (E).

One female patient had a history of tuberculosis treated with anti-Koch therapyanti-tubercular therapy and corticosteroids for 9 months as the standard care. This patient presented with extensive bilateral femoral head involvement evident on radiograph and computed tomography scan. The crescent depression was 2 to 4 mm. She was diagnosed with ARCO stage II of the right hip and grade III of the left hip. Radiographs at 6 years postoperatively showed arrest of osteonecrosis progression with an otherwise high risk of collapse because the ONFH was steroid induced. Clinically, this patient was able to resume all of her routine activities, including a daily commute to work and regular yoga, floor exercises, and stationary cycling (Figure 5).

Figure 5:

Patient F1. Preoperative anteroposterior radiographs (A, B). Preoperative computed tomography scans. There is extensive bilateral femoral head involvement (>30%), with 2 to 4 mm of depression of the crescent (C, D). Anteroposterior radiographs 6 months after treatment (E, F). Anteroposterior radiograph 6 years after treatment. Both femoral heads show arrest of osteonecrosis progression in a patient at high risk for collapse (G).

One male patient who was receiving long-term steroid treatment had relatively moderate improvement in HHS, from a baseline of 65 to 80 at 18 months after treatment. A female patient with bilateral ONFH had ARCO stage III in the right hip and a small, centrally located lesion (<30%) in the left hip. On radiograph and MRI, the right hip showed more than 90% involvement of the lateral, central, and medial regions but no crescent. The decision was made not to treat the left hip because it was deemed to have minimum possibility of progression. At 6 years after treatment, there was regression of necrosis. The patient has done well clinically and had a successful childbirth (Figure 6).

Figure 6:

Patient F2. Preoperative anteroposterior radiographs of the right hip showing more than 90% involvement of the medial, central, and lateral regions. There is no crescent (A, B). Preoperative magnetic resonance images (C, D). Anteroposterior radiograph at 3 months after treatment (E). Anteroposterior radiograph at 6 years after treatment (F).

Overall, the short-term and long-term results of autologous cultured osteoblast treatment along with routine procedures have been satisfactory. None of the 8 patients who underwent follow-up for 5 to 7 years showed any signs of disease progression, and none of the patients required repeat treatment or total arthroplasty.

Among invasive procedures, core decompression has been the standard of care for early stages of ONFH; however, varying degrees of improvement have been reported. Yoon et al17 and Rajagopal et al18 reported treatment of ONFH with core decompression was viable only in early stages, with the effect lasting for 2 to 3 years.

Among the biologics, platelet-rich plasma, growth factors, and bone marrow aspirate concentrate (BMAC) have been widely used along with conventional techniques such as core decompression or bone grafts.19,20 Several contributions in terms of understanding the clinical application and efficacy of biologics for the treatment of ONFH have been published during the past two decades.2123 Inherent limitations such as the absence of controlled studies, uncertainty, and heterogenicity of the composition of biologics have resulted in inconsistent results, and no treatment option has passed the regulatory approval process.24

In a recent study, Hauzeur et al25 reported obvious inefficacy of BMAC treatment in a randomized clinical trial comparing BMAC and core decompression vs core decompression alone. Their assessment criteria included clinical outcome, pain score, radiology, and the need for total hip arthroplasty.

Untreated bone marrow should be considered first-generation and processed bone marrow second-generation biological treatments for ONFH. The results using first- and second-generation biologics have been variable, and there are no long-term data and no formally approved products. Thus, curative treatment of ONFH, at least prior to the collapse stage, remains challenging.26

Kim et al27 were the first to report the clinical use of cultured osteoblasts in a single patient with bilateral ONFH (Ficat Arlet grade II); they reported a good outcome at 5 years without progression of disease. Later, Gangji et al28 compared the use of BMAC and autologous osteoblast cells in the treatment of avascular necrosis. They reported the group treated with osteoblast cells had twofold higher respondents at 36 months compared with the BMAC-treated group. These patients continued to have reduced pain until the end of the study period. Also, progression of disease from stage III to IV was more than 2 times higher in the BMAC-treated group compared with the osteoblast-treated group.28

The author proposes the evolution of biologics being used as first- and second-generation treatment, and the current modality of using autologous cultured osteoblasts as the latest and third-generation treatment. As such, the latter is the only modality that qualifies as cell-based therapy (Table 3).

Table 3:

Proposed Generations of Orthobiologics

Autologous cultured osteoblast implant is the most novel treatment modality for joint preservation. In the author's experience, 11 patients at 4 years, 6 patients at 5 years, and 3 patients at 7 years after transplant showed arrest of disease. Joint structure, biomechanics, strength, and function were regained in these patients, and they required no repeat treatment. Yet, unlike few other treatments, total arthroplasty still remains viable as a future option.

The assessment of ONFH progression on MRI after core decompression remains a sparsely studied subject. Therefore, radiographic and clinical examination during follow-up is crucial.

Autologous cultured osteoblast implantation is effective and safe for patients with ARCO stages II and III ONFH. This third-generation biologic can be considered a joint-preserving treatment in correctly chosen patients.

Patient Characteristics

Pain and Function-Related Scores

Proposed Generations of Orthobiologics

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Hip Preservation With Autologous Osteoblast Cell-Based Treatment in Osteonecrosis of the Femoral Head - Healio

Bone Marrow Stem Cells Comments Off on Hip Preservation With Autologous Osteoblast Cell-Based Treatment in Osteonecrosis of the Femoral Head – Healio | December 17th, 2020

Regeneron: Preventing Infection Among Households

Regeneron: A Phase 3, Randomized, Double-Blind, Placebo-Controlled Study Assessing the Efficacy and Safety of Anti-Spike SARS-CoV-2 Monoclonal Antibodies in Preventing SARS-Cov-2 Infection in Household Contacts of Individuals Infected with SARS-CoV-2

In this multisite trial, researchers are working to determine if monoclonal antibodies made by the drug company Regeneron Pharmaceuticals can prevent COVID-19 infection among people who have been exposed by someone in their household, but have not yet developed the disease. The trial is testing the same antibody cocktail given to President Donald Trump when he was hospitalized with COVID-19, though with a different use.

In this case, the antibodies are intended to prevent people from getting sick if they have a household member with COVID, Enfield said. So far, UVA has done a good job with recruitment, which is particularly tricky in this case as you have to find people who have been exposed to COVID in their household, but who do not yet have COVID.

UVA is recruiting 40 participants for the study, each of whom will receive four injections of either the antibodies or a placebo. Participants must have been exposed to COVID-19 by someone in their household within the previous 96 hours and continue to live with that person for a month.

Its been a rapid process, and a testament to the multidisciplinary team involved, from infectious disease clinicians and researchers to cell therapy, pulmonary critical care and several other departments, Sturek said. Its been all-hands-on-deck.

As results from these and other clinical trials continue to come in, Sturek also expressed hope that we will see widespread and effective vaccine distribution sooner, rather than later.

There is a lot on the horizon, from news around vaccines to getting the first wave of vaccines to high-risk people like health care workers, he said. Every day we learn something new, and its important to stay humble, to be able to adapt and change on the fly.

Fighting this pandemic has been a huge, multidisciplinary effort, and so many people joined in to help contribute and bring new treatments to our patients, and bring new research to the field. That doesnt get done without a huge team of nurses, clinical research coordinators, pharmacists, respiratory therapists and many, many others. It is impossible to overstate the importance of all of that teamwork.

See the article here:
Research That Saves Lives: Four COVID-19 Therapies Being Tested at UVA - University of Virginia

Bone Marrow Stem Cells Comments Off on Research That Saves Lives: Four COVID-19 Therapies Being Tested at UVA – University of Virginia | December 17th, 2020

Autologous hematopoietic stem cell transplant (AHSCT) induces a reduction in relapse rate and physical disability in patients with relapsing-remitting multiple sclerosis (RRMS) who respond inadequately to other treatments, a small study suggests.

The study, Selective cognitive dysfunction and physical disability improvement after autologous hematopoietic stem cell transplantation in highly active multiple sclerosis, was published in the journal Nature Scientific Reports.

AHSCT is an experimental approach to treat multiple sclerosis (MS) that is meant to rebuild a patients immune system in order to stop attacks on the brain and spinal cord.

The procedure begins with collecting a patients own (meaning autologous) healthy hematopoietic stem cells immature cells that can develop into all types of blood cells from the bone marrow. These cells are put back into the patient after a fairly non-aggressive combination of chemotherapy is given to kill the patients immune cells.

A team of researchers at the Vilnius University, in Lithuania, evaluated the effectiveness and safety of the AHSCT procedure in 24 patients (18 female, mean age 37.8 years) with highly active RRMS (mean disease duration of 8.6 years) who failed to respond to conventional therapies.

The aim of the study was to assess cognitive dysfunction and physical disability after AHSCT, to explore the potential factors influencing disability regression after the transplant, and to estimate the safety of low-dose immunosuppressive therapy in highly active relapsing MS patients.

Researchers assessed participants disability and cognition through changes in several functional measures, including the expanded disability status scale (EDSS) and the Brief International Cognitive Assessment for MS, which includes three cognitive domains measured by the symbol digit modalities test, brief visuospatial memory test revised, and California verbal learning test second edition.

Of the 24 patients, 13 (54.2%) completed a 24-month follow-up and were included in the efficacy analysis of AHSCT. From those, two (15.4%) had one relapse during the first year after AHSCT and three patients (23.1%) had one relapse during the second year after AHSCT.

The annualized relapse rate (ARR) was 2.7 one year before AHSCT and 1.9 at two years before AHSCT. After the AHSCT procedure, ARR dropped to 0.2 in the first year and to 0.3 in the second year. This represented an 89% reduction in ARR, when comparing the values at two years after AHSCT with those at two years before AHSCT.

The researchers also noted a reduction in disability progression (as measured by EDSS scores), with 84.6% of patients improving their disability score after AHSCT at month six and 76.9% at one year. Additionally, 76.9% of patients showed stable disability scores two years after the transplant.

The findings of EDSS improvement in almost 85% of the patients suggest that disability may be often at least temporarily reversible in patients with highly active [relapsing] MS if they receive suitable and well-timed treatment, the researchers wrote.

Using appropriate statistical models, researchers found that the clinical variable that explained the disability regression at months 6 and 12 after AHSCT was the disability progression over 6 months before AHSCT.

Improvements in cognition after AHSCT also were observed. Specifically, the scores of information processing speed and verbal learning, measured by the symbol digit modalities test, were significantly higher at month 12 after AHSCT (56.8) when compared to month three (48.3).

The score of brief visuospatial memory test revised that assesses visuospatial memory was slightly lower at month three (25.6) than before AHSCT (27.8), however, the difference was not significant.

The score of the California verbal learning test, which assesses verbal learning, was significantly higher at month 12 (63.6) than before AHSCT (55.2).

No new or active lesions were found on MRI after AHSCT, suggesting that all patients remained without radiological disease activity.

Furthermore, regarding safety, the incidence and severity of adverse events (side effects) after AHSCT were in the expected range and all were resolved. There were no transplant-related deaths reported.

Researchers noted several limitations to the studys findings, including the low sample size and the fact that the patientss assessment and follow-ups were provided at the same center without a comparative group.

Nonetheless, the outcomes are highly promising, as compared to conventional MS treatment, the researchers wrote. Further research is needed to replicate these findings and to assess long-term outcomes and safety of AHSCT.

Diana holds a PhD in Biomedical Sciences, with specialization in genetics, from Universidade Nova de Lisboa, Portugal. Her work has been focused on enzyme function, human genetics and drug metabolism.

Total Posts: 1,053

Patrcia holds her PhD in Medical Microbiology and Infectious Diseases from the Leiden University Medical Center in Leiden, The Netherlands. She has studied Applied Biology at Universidade do Minho and was a postdoctoral research fellow at Instituto de Medicina Molecular in Lisbon, Portugal. Her work has been focused on molecular genetic traits of infectious agents such as viruses and parasites.

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Stem Cell Transplant Reduces Relapses and Disability in RRMS... - Multiple Sclerosis News Today

Bone Marrow Stem Cells Comments Off on Stem Cell Transplant Reduces Relapses and Disability in RRMS… – Multiple Sclerosis News Today | December 16th, 2020

PHOENIX, Dec. 16, 2020 /PRNewswire/ --Creative Medical Technology Holdings Inc., (OTC CELZ) announced today positive preclinical data supporting the utilization of its ImmCelz cell based immunotherapy for treatment of stroke. In an animal model of ischemia stroke, the middle cerebral artery ligation model, administration of ImmCelz resulted in 34% reduction in infarct volume, whereas control bone marrow mesenchymal stem cells reduced infarct volume by 21%. Additionally, improvements in functional recovery where observed using the Rotarod test. At 28 days after induction of stroke the animals receiving ImmCelz had superior running time (92% of non-stroke controls) compared to animals which received bone marrow mesenchymal stem cells (73% of non-stroke control). Animals that received saline had a running time that was 50% of non-stroke controls.

"The regenerative potential of immune cells that have been programmed by stem cells is a fascinating and novel area of research." Said Dr. Amit Patel, coinventor of ImmCelz, and board member of the Company. "Conceptual advantages of using reprogrammed T cells include higher migratory ability due to smaller size, as well as ability to replicate and potentially form "regenerative memory cells."

"This data, which is covered by our previous filed patents, such as no. 15/987739, Generation of autologous immune modulatory cells for treatment of neurological conditions, demonstrate that immune modulation via this stem cell based method may be a novel and superior way of addressing the $30 billion dollar market for stroke therapeutics1." Said Dr. Thomas Ichim, coinventor of the patent and Chief Scientific Officer of the Company. "The fact that this technology, which has priority back to 2017, is demonstrating such stunning results, motivates us to consider filing an Investigational New Drug Application for use in stroke."

Creative Medical Technology Holdings possesses numerous issued patents in the area of cellular therapy including patent no. 10,842,815 covering use of T regulatory cells for spinal disc regeneration, patent no. 9,598,673 covering stem cell therapy for disc regeneration, patent no. 10,792,310 covering regeneration of ovaries using endothelial progenitor cells and mesenchymal stem cells, patent no. 8,372,797 covering use of stem cells for erectile dysfunction, and patent no. 7,569,385 licensed from the University of California covering a novel stem cell type.

"While stroke historically has been a major area of unmet medical need, the rise in stroke cases , as well as the fact that younger people are increasingly falling victim to stroke, strongly motivates us to accelerate our developmental programs and to continue to explore participation of Big Pharma in this space." Said Timothy Warbington, President and CEO of the Company. "We are eager to replicate the existing experiments start compiling the dossier needed to take ImmCelz into humans using the Investigational New Drug Application (IND) route through the FDA."

About Creative Medical Technology Holdings

Creative Medical Technology Holdings, Inc. is a commercial stage biotechnology company specializing in stem cell technology in the fields of urology, neurology and orthopedics and trades on the OTC under the ticker symbol CELZ. For further information about the company, please visitwww.creativemedicaltechnology.com.

Forward Looking Statements

OTC Markets has not reviewed and does not accept responsibility for the adequacy or accuracy of this release. This news release may contain forward-looking statements including but not limited to comments regarding the timing and content of upcoming clinical trials and laboratory results, marketing efforts, funding, etc. Forward-looking statements address future events and conditions and, therefore, involve inherent risks and uncertainties. Actual results may differ materially from those currently anticipated in such statements. See the periodic and other reports filed by Creative Medical Technology Holdings, Inc. with the Securities and Exchange Commission and available on the Commission's website atwww.sec.gov.

Timothy Warbington, CEO[emailprotected] CreativeMedicalHealth.com

Creativemedicaltechnology.comwww.StemSpine.comwww.Caverstem.comwww.Femcelz.com

1 Stroke Management Market Size Forecasts 2026 | Statistics Report (gminsights.com)

SOURCE Creative Medical Technology Holdings, Inc.

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Creative Medical Technology Holdings Announces Successful Application of ImmCelz Immunotherapy for Treatment of Stroke - PRNewswire

Bone Marrow Stem Cells Comments Off on Creative Medical Technology Holdings Announces Successful Application of ImmCelz Immunotherapy for Treatment of Stroke – PRNewswire | December 16th, 2020

Cancer researchers have created a new class of drugs to selectively target and destroy myeloid leukaemia cells with TET gene mutations.

Photomicrograph of bone marrow biopsy showing myeloblasts of acute myeloid leukemia (AML), a cancer of white blood cells.

Researchers have developed a novel class of targeted cancer drug that may be highly effective for the treatment of myeloid leukaemias. According to the team, their synthetic molecule, called TETi76, was able to selectively kill cells with TET2 gene mutations, one of the most common driver mutations in myeloid leukaemias.

Myeloid leukaemias are cancers derived from stem and progenitor cells in the bone marrow that give rise to all normal blood cells. These malignancies are normally treated with chemotherapy, either alone or in combination with targeted drugs; however, the significant side-effects associated with this treatment mean a more selective/targeted treatment is desirable.

In a new study published inBlood Cancer Discovery, researchers from the Cleveland Clinics Taussig Cancer Institute and Lerner Research Institute, both US, describe a new pharmacological strategy to preferentially target and eliminate leukaemia cells with TET2 mutations.

In preclinical models, we found that a synthetic molecule called TETi76 was able to target and kill the mutant cancer cells both in the early phases of disease what we call clonal haematopoiesis of indeterminate potential, or CHIP and in fully developed TET2 mutant myeloid leukaemia, said Dr Jaroslaw Maciejewski, a practicing haematologist and chair of the Cleveland Clinic Department of Translational Hematology & Oncology Research, who has been investigating the TET2 gene for the last decade.

TET genes encode DNA dioxygenase enzymes, which remove chemical groups from DNA molecules. Their activity ultimately changes what genes are expressed and can contribute to the development and spread of disease.

TET genes act as tumour suppressors, so loss-of-function mutations are common in haematological cancers, like leukaemias. While all members of the TET family are dioxygenases, TET2 is the most powerful. Genetic TET2 deficiency has been shown to skew differentiation of blood cells and clonal expansion of progenitor and stem cells. However, its related genes TET1 and TET3 provide residual enzymatic activity, sufficient to facilitate the survival of these progenitor cells harbouring cancerous mutations, thereby promoting the spread of the cancer, even when TET2 is inactive.

In their study, the research team designed TETi76 to replicate and amplify the effects of a natural molecule called 2-hydroxyglutarate (2HG), which inhibits the enzymatic activity of TET genes. They hoped to selectively eliminate TET2 mutant leukaemia cells centres by targeting their reliance on this residual DNA dioxygenase activity.

We took lessons from the natural biological capabilities of 2HG, explained Dr Babal Kant Jha, Maciejewskis collaborator from the Department of Translational Hematology & Oncology Research. We studied the molecule and rationally designed a novel small molecule, synthesised by our chemistry group headed by Dr James Phillips. Together, we generated TETi76 a similar, but more potent version capable of inhibiting not just TET2, but also the remaining disease-driving enzymatic activity of TET1 and TET3.

The researchers studied TETi76s effects in both preclinical disease and xenograft models (where human cancer cells are implanted into preclinical models). In both models, treatment with the novel TET inhibitor suppressed the clonal evolution of TET2 mutant cells.

While the team cautioned that additional studies would be critical to investigate the small molecules cancer-fighting capabilities in patients, Dr Jha said we are optimistic about our results, which show not just that TETi76 preferentially restricts the growth and spread of cells with TET2 mutations, but also gives survival advantage to normal stem and progenitor cells.

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Novel class of targeted cancer therapies could treat myeloid leukaemias - Drug Target Review

Bone Marrow Stem Cells Comments Off on Novel class of targeted cancer therapies could treat myeloid leukaemias – Drug Target Review | December 16th, 2020

Victoria Gray (second from left) with children Jamarius Wash, Jadasia Wash and Jaden Wash. Now that the gene-editing treatment has eased Gray's pain, she has been able be more active in her kids' lives and looks forward to the future. "This is really a life-changer for me," she says. Victoria Gray hide caption

Victoria Gray (second from left) with children Jamarius Wash, Jadasia Wash and Jaden Wash. Now that the gene-editing treatment has eased Gray's pain, she has been able be more active in her kids' lives and looks forward to the future. "This is really a life-changer for me," she says.

The last thing a lot of people want to do these days is get on a plane. But even a pandemic would not stop Victoria Gray. She jumped at the chance to head to the airport this summer.

"It was one of those things I was waiting to get a chance to do," says Gray.

She had never flown before because she was born with sickle cell disease. She feared the altitude change might trigger one of the worst complications of the devastating genetic disease a sudden attack of excruciating pain.

But Gray is the first person in the United States to be successfully treated for a genetic disorder with the help of CRISPR, a revolutionary gene-editing technique that makes it much easier to make very precise changes in DNA.

About a year after getting the treatment, it was working so well that Gray felt comfortable flying for the first time. She went to Washington, D.C., to visit her husband, who has been away for months on deployment with the National Guard.

"It was exciting. I had a window. And I got to look out the window and see the clouds and everything," says Gray, 35, of Forest, Miss.

Gray wore a mask the whole time to protect herself against the coronavirus, kept her distance from other people at the airport, and arrived happily in Washington, D.C., even though she's afraid of heights.

"I didn't hyperventilate like I thought I would," Gray says, laughing as she recounts the adventure in an interview with NPR.

NPR has had exclusive access to follow Gray through her experience since she underwent the landmark treatment on July 2, 2019. Since the last time NPR checked in with Gray in June, she has continued to improve. Researchers have become increasingly confident that the approach is safe, working for her and will continue to work. Moreover, they are becoming far more encouraged that her case is far from a fluke.

At a recent meeting of the American Society for Hematology, researchers reported the latest results from the first 10 patients treated via the technique in a research study, including Gray, two other sickle cell patients and seven patients with a related blood disorder, beta thalassemia. The patients now have been followed for between three and 18 months.

All the patients appear to have responded well. The only side effects have been from the intense chemotherapy they've had to undergo before getting the billions of edited cells infused into their bodies.

The New England Journal of Medicine published online this month the first peer-reviewed research paper from the study, focusing on Gray and the first beta thalassemia patient who was treated.

"I'm very excited to see these results," says Jennifer Doudna of the University of California, Berkeley, who shared the Nobel Prize this year for her role in the development of CRISPR. "Patients appear to be cured of their disease, which is simply remarkable."

Another nine patients have also been treated, according to CRISPR Therapeutics in Cambridge, Mass., and Vertex Pharmaceuticals in Boston, two companies sponsoring the research. Those individuals haven't been followed long enough to report any results, officials say.

But the results from the first 10 patients "represent an important scientific and medical milestone," says Dr. David Altshuler, Vertex's chief scientific officer.

The treatment boosted levels of a protein in the study subjects' blood known as fetal hemoglobin. The scientists believe that protein is compensating for defective adult hemoglobin that their bodies produce because of a genetic defect they were born with. Hemoglobin is necessary for red blood cells to carry oxygen.

Analyses of samples of bone marrow cells from Gray six months after getting the treatment, then again six months later, showed the gene-edited cells had persisted the full year a promising indication that the approach has permanently altered her DNA and could last a lifetime.

"This gives us great confidence that this can be a one-time therapy that can be a cure for life," says Samarth Kulkarni, the CEO of CRISPR Therapeutics.

Gray and the two other sickle cell patients haven't had any complications from their disease since getting the treatment, including any pain attacks or hospitalizations. Gray has also been able to wean off the powerful pain medications she'd needed most of her life.

Prior to the treatment, Gray experienced an average of seven such episodes every year. Similarly, the beta thalassemia patients haven't needed the regular blood transfusions that had been required to keep them alive.

"It is a big deal because we we able to prove that we can edit human cells and we can infuse them safely into patients and it totally changed their life," says Dr. Haydar Frangoul at the Sarah Cannon Research Institute in Nashville. Frangoul is Gray's doctor and is helping run the study.

For the treatment, doctors remove stem cells from the patients' bone marrow and use CRISPR to edit a gene in the cells, activating the production of fetal hemoglobin. That protein is produced by fetuses in the womb but usually shuts off shortly after birth.

The patients then undergo a grueling round of chemotherapy to destroy most of their bone marrow to make room for the gene-edited cells, billions of which are then infused into their bodies.

"It is opening the door for us to show that this therapy can not only be used in sickle cell and thalassemia but potentially can be used in other disorders," Frangoul says.

Doctors have already started trying to use CRISPR to treat cancer and to restore vision to people blinded by a genetic disease. They hope to try it for many other diseases as well, including heart disease and AIDS.

The researchers stress that they will have to follow Gray and many other patients for a lot longer to be sure the treatment is safe and that it keeps working. But they are optimistic it will.

Gray hopes so too.

"It's amazing," she says. "It's better than I could have imagined. I feel like I can do what I want now."

The last year hasn't always been easy for Gray, though. Like millions of other Americans, she has been sheltering at home with three of her children, worrying about keeping them safe and helping them learn from home much of the time.

"I'm trying to do the things I need to do while watch them at the same time to make sure they're doing the things they need to do," Gray says. "It's been a tough task."

But she has been able do other things she never got to do before, such as watch her oldest son's football games and see her daughter cheerleading.

"This is really a life-changer for me," she says. "It's magnificent."

She's now looking forward to going back to school herself, learning to swim, traveling more when the pandemic finally ends, and watching her children grow up without them worrying about their mother dying.

"I want to see them graduate high school and be able to take them to move into dorms in college. And I want to be there for their weddings just everything that the normal people get to do in life. I want to be able to do those things with my kids," she says. "I can look forward now to having grandkids one day being a grandmama."

Excerpt from:
1st Patients To Get CRISPR Gene-Editing Treatment Continue To Thrive - NPR

Bone Marrow Stem Cells Comments Off on 1st Patients To Get CRISPR Gene-Editing Treatment Continue To Thrive – NPR | December 16th, 2020

Bone Regeneration Material Market: Introduction

Bone-regeneration techniques, either with autografts or allografts, represent a challenge for reconstructive surgery. Biomaterials are temporary matrices for bone growth and provide a specific environment and architecture for tissue development. Depending on the specific intended application of the matrix, whether for structural support, drug-delivery capability, or both, certain material categories may be more or less well suited to the final structure.

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Key Drivers and Restraints of Global Bone Regeneration Material Market

Increase in prevalence of degenerative joint diseases boost the market. Worldwide estimates of degenerative joint diseases indicate that 9.6% men and 18.0% women above 60 years have symptomatic osteoarthritis. According to expert opinions presented in the EULAR committee report, radiographic evidence of knee osteoarthritis in men and women over 65 years of age is found in 30% of the population.

In the absence of disease modifying therapy, a large number of patients with osteoarthritis progress to advance joint destruction. Surgery with bone grafts and substitutes play a major role in the management of osteoarthritis to avoid advanced joint destruction. According to the American College of Rheumatology, advances in biomaterial and tissue engineering are expected to create new opportunities to integrate surgical approaches in osteoarthritis.

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Increase in the number of orthopedic surgeries also fuels the market. According to the American Academy of Orthopaedic Surgeons (AAOS), approximately 129,000 total knee arthroplasty (TKA) surgeries were performed in the U.S. in 1990, and the number has increased to over 600,000 in 2010. The AAOS has projected that 3 million TKA procedures would be performed by 2030 in the U.S. alone. Moreover, spinal surgeries are becoming increasingly popular, and approximately 432,000 spinal fusions are performed in the U.S. each year. Bone grafts and substitutes are extensively used for the surgeries mentioned above. This is likely to fuel the bone regeneration material market.

Bone graft and substitutes are a long-term solution to bone problem treatment; however, these are expensive. No two patients or their customized bone grafts and substitutes treatments are exactly alike. Hence, the number of appointments, procedures, and costs vary accordingly. Surgeons charge US$ 35,000 to US$ 40,000 for a complex posterolateral lumbar spine fusion bone graft surgery. Most surgeons refer patients to specialty surgeons, neurologists, or orthopedic physicians, which increases the cost of procedure. Asia is price-sensitive and displays inhibitions with respect to investing in bone graft and substitutes, which are often only affordable to the elite population; therefore offering a comparatively smaller market.

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Cell-based Segment to Expand Significantly

Based on product type, the global bone regeneration material market can be divided into ceramic-based, polymer-based, growth factor-based, cell-based and others

The ceramic-based segment dominated the global market in 2019. It is projected to sustain its position during the forecast period. Ceramic-based bone grafts are widely used to reduce the need for iliac crest bone grafting. Rise in geriatric population with oral health issues across the world has augmented the number of bone graft surgeries performed in the last few years.

However, the cell based segment is projected to expand at a notable CAGR during the forecast period. Bone tissue engineering (BTE) using bone marrow stem cells has been suggested as a promising technique for reconstructing bone defect in order to overcome the drawbacks of bone graft materials.

Orthopedic surgery segment to dominate global bone regeneration material market

Based on application, the global bone regeneration material market can be segregated into orthopedic surgery, bone trauma, dental surgery and others.

In terms of revenue, the orthopedic surgery segment accounted for a prominent share of the market in 2019 owing to a rise in the geriatric population and increase in cases of orthopedic diseases. According to WHO, between 2015 and 2050, the proportion of the world's population over 60 years would nearly double from 12% to 22%. The number of people aged 60 years and older is estimated to outnumber children younger than 5 years by 2020. As per MVZ Gelenk-Klinik data, more than 2400 orthopedic surgical procedures are performed per year at the Gelenk Klinik Orthopaedic Hospital.

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North America to dominate global bone regeneration material market

In terms of region, the global bone regeneration material market can be divided into: North America, Europe, Asia Pacific, Latin America, and Middle East & Africa

North America accounted for a significant share of the bone regeneration material market in 2019, followed by Europe. Usage of new and innovative products in both premium and value segments among various bone grafts substitutes is projected to boost the bone regeneration material market in several countries in Europe and North America in the next few years. According to the Centers for Disease Control and Prevention (CDC), the total number of inpatient surgeries carried out in the U.S. were 51.4 million in 2014; of these 719,000 were total knee replacements and 332,000 were total hip replacement.

The market in developing countries in Asia Pacific is estimated to expand at a significant CAGR during the forecast period. The market in Asia Pacific is driven by an increase in population and time taken to accept new technologies. Increase in the number of patients and geriatric population are major factors that are expected to propel the market in Japan during the forecast period. According to the Gerontological Society of America, Japan has the highest proportion of geriatric population in the world. Hence, demand for orthopedic surgeries is estimated to be higher in Japan than that in other countries in Asia Pacific.

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Key Manufacturers Operating in Market

The global bone regeneration material market was highly fragmented in 2019. Key manufacturers operating in the global market are:

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Bone Regeneration Material Market: Cell-based Segment to Expand Significantly - BioSpace

Bone Marrow Stem Cells Comments Off on Bone Regeneration Material Market: Cell-based Segment to Expand Significantly – BioSpace | December 16th, 2020

If youre like 95% of American adults, you had chickenpox as a kid. Before the United States started its widespread vaccination program in 1995, there were roughly four million cases of chickenpox every year. So, most people suffered through an infection with this highly contagious virus and its itchy, whole-body rash.

But unlike many childhood viruses, the varicella-zoster virus that causes chickenpox doesnt clear from the body when the illness ends. Instead it hangs around, taking up residence and lying dormant in the nerves, sometimes for decades, with the immune system holding it in check. In some people, it lives there harmlessly for the rest of their life. But in others, the virus can suddenly emerge and strike again, this time appearing as a different condition known as shingles.

Like chickenpox, shingles also causes a blistering rash, but this time it generally appears as a painful band around one side of your ribcage or on one side of your face. The first symptom for many people is pain or a burning sensation in the affected area. You may also have fever, a headache, and fatigue. Along with the rash and other temporary symptoms, shingles can also bring unpleasant, long-lasting, and sometimes permanent complications, such as skin infections, nerve pain in the area where the rash appeared, or even vision loss.

Experts dont fully understand this. One theory is that shingles occurs when your immune system loses its ability to keep the virus in check.

After you get chickenpox, your immune system is able to recognize the varicella-zoster virus thanks to specialized immune system cells, called B and T cells, that are able to remember the virus and quickly marshal an attack on it. Factors that weaken the immune system increase your risk of developing shingles. These include

While you may not be able to control certain factors that might trigger shingles, there are strategies you can use to prevent shingles. The most important is vaccination. Research shows that the shingles vaccine Shingrix is 90% effective in preventing an outbreak of shingles. Even if you do get shingles after being vaccinated, Shingrix greatly reduces your risk of developing persistent pain in the affected area, known as post-herpetic neuralgia.

In addition to getting vaccinated, its always a good idea to take steps to keep your body healthy, such as choosing healthy foods, staying active, and getting sufficient sleep. Its not clear if healthy lifestyle habits like these can prevent shingles, but even if they dont, theyre worthwhile because they will benefit your body in many other ways.

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Shingles: What triggers this painful, burning rash? - Harvard Health Blog - Harvard Health

Bone Marrow Stem Cells Comments Off on Shingles: What triggers this painful, burning rash? – Harvard Health Blog – Harvard Health | December 14th, 2020

As interest in chimeric antigen receptor (CAR) T-cell therapy continues to grow with more promising data coming out and approvals from the FDA in various hematologic malignancies, the role of this cellular therapy has yet to be defined in multiple myeloma, but recent data have inspired hope for this therapy in the relapsed/refractory population.

The B-cell maturation antigen (BCMA)directed CAR T-cell therapy idecabtagene vicleucel (ide-cel; bb2121) has generated excitement in this population following the submission of a Biologics License Application (BLA) in March 2020, seeking approval of ide-cel in patients with multiple myeloma who have received at least 3 prior therapies, including an immunomodulatory drug (IMiD), a proteasome inhibitor (PI), and an anti-CD38 antibody, and a Priority Review designation granted in September 2020. Following delays in the review due to coronavirus disease 2019, the Prescription Drug User Fee Act action date has been set as March 27, 2021.

Deep and durable responses were observed with ide-cel as treatment of heavily pretreated patients with relapsed/refractory multiple myeloma, according to updated results from the CRB-401 study presented by Yi Lin, MD, PhD, assistant professor of oncology and associate professor of medicine at Mayo Clinic, during the 2020 American Society of Hematology (ASH) Annual Meeting. The efficacy and safety findings were consistent with prior findings and supported a favorable clinical risk-benefit profile at target dose levels 150 x 106.1

The median overall survival with ide-cel was 34.2 months (95% CI, 19.2-not evaluable) among all patients in this triple-classexposed population, and half of the patients who had ongoing responses achieved a duration of response >2 years. The median progression-free survival (PFS) was 8.8 months (95% CI, 5.9-11.9). The objective response rate (ORR) overall was 75.8%, which included complete responses (CRs) in 38.7%.

These results from CRB-401 are comparable to the findings from the pivotal phase 2 KarMMa study (NCT03361748), which were presented earlier this year during the 2020 American Society of Clinical Oncology (ASCO) Virtual Scientific Program and support the Biologics License Application. The median OS for this study was 19.4 months, and the median PFS was 8.8 months. The ORR was 73%, which included a CR rate of 33%, and the median duration of response was 10.7 months.2

Ide-cel is being explored in several ongoing studies as well, including the phase 2 KarMMa-2 (NCT-3601078), phase 3 KarMMa-3 (NCT03651128), and phase 1 KarMMa-4 (NCT04196491) clinical trials. These phase 2 and 3 studies are evaluating ide-cel in patients with triple-classexposed disease, and the phase 1 study will explore the use of this CAR T-cell therapy in patients with high-risk newly diagnosed multiple myeloma.

These data have also set the stage for other BCMA-directed CAR T-cell therapies in development for the treatment of patients with multiple myeloma.

In an interview with Targeted Oncology, Lin discussed the updated findings from the CRB-401 study of ide-cel as treatment of patients with relapsed/refractory multiple myeloma.

TARGETED ONCOLOGY: What historical data have we seen with BCMA-directed CAR T-cell therapy in patients with relapsed/refractory multiple myeloma?

Lin: With the CAR T approach in multiple myeloma, the very first case report was actually with CD19-targeted CAR T because there was already experience with that particular antigen in leukemia and lymphomas. There's some ongoing effort in terms of dual targeting with CD19 and BCMA, but BCMA very quickly emerged as an ideal candidate for the myeloma space. This is an antigen that is more uniformly expressed on plasma cells, including myeloma cells, and maybe a small subset of mature B cells, but otherwise BCMA is not expressed on healthy tissues.

There have been some single-center clinical trials with the BCMA-targeted CAR T approach prior to the CRB-401 study, both with National Cancer Institute and the University of Pennsylvania with slightly different constructs. With those early phase 1 studies, there was a little bit more toxicity seen, although there was certainly some response, but the response wasn't particularly durable. CRB-401 is the first in a series of now industry-sponsored multicenter studies, in which we are now seeing a much more encouraging durable response rate and also a more favorable side effect profile as well. At ASH this year, I presented the longer follow-up on the phase 1 CRB-401 study. There is a pivotal phase 2 KarMMa study using the same CAR T construct that had been presented at ASCO earlier this year.

TARGETED ONCOLOGY: Please describe the design of the trial and what was different about the study.

Lin: The CRB-401 study has 2 parts. The first part is the dose-escalation part, and the second part is the dose expansion. The dose escalation is basically testing the range of a fixed dose of 50 million all the way up to 800 million of ide-cel CAR T cells in a relatively small number of patients, basically looking for signs of severe side effects to identify a safe dose. The dose expansion cohort is where we take the more promising doses in terms of response, and also safety profile, and test them in more patients to get a better safety signal, which is then moved forward for phase 2 testing in the KarMMa study.

In the dose-expansion portion of CRB-401, we required that each patient must have had exposure to an anti-CD38 antibody. That was allowed in a dose escalation but not required for everybody. [To be included in the study,] the patient must have had become refractory to the most recent line of treatment before they came on the study. The other thing that was different was that in the dose-escalation cohort, all patients had their myeloma cells in the bone marrow reviewed centrally by immunohistochemistry staining, and they were required to have at least 50% of these cells having BCMA expression in a dose-expansion cohort, to better understand the clinical efficacy and safety profiles of this treatment. We also included some patients that had BCMA expression below that to even levels that were not detectable by immunohistochemistry.

TARGETED ONCOLOGY: What were the results from this study?

Lin: The study [included] a total of 62 patients. The results from the first 33 patients were already published in the New England Journal of Medicine last year, and this year at ASH, data were presented for outcomes of the entire 62-patient cohort, with a median follow-up of now 18.1 months. What we have seen so far is in this entire treated patient cohort these are patients with very high-risk features of myeloma, and close to a third of these patients had high-risk cytogenetics, 37% of these patients had extra modularity plasma effect, and almost half of these patients needed some type of systemic therapy while their CAR T cells are being made. These patients, on average, had 6 lines of prior therapy, and in close to 70% or higher, these patients are either triple-refractory or were refractory to the most recent line of therapy.

For this group of patients that was treated overall, the safety signal was very tolerable, which is not surprising with CAR T therapy because these patients also do get lymphodepletion chemotherapy as part of the treatment with CAR T. We do see that low blood count is the most common side effect, including the more severe low blood counts, but on average, the recovery of these blood counts can be seen well under the first 3 months after CAR T infusion. The other most common side effects that we need to watch for with CAR T are cytokine release syndrome (CRS) and neurotoxicity. What we have seen in this study is that, on average, about 76% of these patients had some type of CRS. However, those that had grade 3 or higher, that is only [seen] in 6.5% of the patients, so much lower, and that's also reflected in the relative lower use of tocilizumab and steroids, as well, to manage the side effects. About 35% of these patients had some type of neurologic side effect, but again, only 1 patient had a more severe form of neurotoxicity. Compared to what we have seen with the CAR T experience in the lymphoma/leukemia space, this is a very, very encouraging safety profile.

We have also now seen that the ORR is quite high. It's 75.8% with a CR and stringent CR rate of about 38.7%. Many of these patients that had bone marrow that were evaluable for minimal residual disease (MRD) response were MRD-negative. We are seeing, since we tested many doses, that there is a dose-related increase in response with increasing [the] dose, and we have also seen that the duration of response is 10.3 months. When we look at the dose that was tested as well in those expansions [in] the 150 to 450 range, what we have seen is that the duration of response is comparable, so not significantly decreased, for patients with high-risk features like those with extramedullary disease for older patients, as well as patients who needed to get bridging therapy during treatment. The median PFS is 8.8 months, and the median OS is 34.2 months.

So far, the response rate, duration of response, and PFS seem to be comparable to what we also now see in the KarMMa study, which has less follow-up, but we are seeing a very nice median OS for a treatment in which we're just giving a 1 dose infusion and no follow-up maintenance therapy.

TARGETED ONCOLOGY: In terms of CAR T-cell therapy, how do you see this strategy impacting this patient population in the future?

Lin: I think there's definitely a role for this in the practice. The BLA for ide-cel has been submitted to the FDA, so we're anticipating review sometime in early 2021. This is very exciting because this could very well be the first CAR T for multiple myeloma. I think this would definitely be a treatment option for these patients. Based on how KarMMa is designed, we anticipate that the FDA approval will be in the space of patients who [have] had at least 3 lines of prior therapy and have been exposed to the currently approved 3 main backbones of treatmenta PI, IMiD, and the CD38 antibody. The full detail is pending final FDA review and the label. However, in that space, certainly looking at the demographic of the patient that's been treated so far as CRB-401 and KarMMa, that's a wider group of patients. Based on the fact that this is a treatment that is a basically living active cells, I perceive that the earlier that patient could get this therapy in the earliest possible approved indication, there would likely be potentially more benefit for the patients.

TARGETED ONCOLOGY: Do you think there is hope for this treatment in other hematologic malignancies outside of lymphomas and leukemias as well?

Lin: That is actually a very interesting question because what we're seeing in terms of the severity of CRS and neurotoxicity is a reflection of our evolving learning about how to manage the toxicity, as well. There is a component to the CAR design, the disease, the nature of the disease, the kinetics of the CAR T actions, in the manifestation of these symptoms. What we are seeing now, with even the prior CAR and next-generation CAR coming on, we will likely see an ongoing improvement in terms of a reduction of severity of these symptoms and also in the ways that we could manage these symptoms.

The fact that myeloma would be the next disease that has an FDA-approved CAR T also relates to the fact that the BCMA antigen is more restricted on the cell type where the malignancy is involved, similar to CD19 for lymphoid malignancy. We are seeing that there are some challenges, for example with acute myeloid leukemia or myeloid neoplasms where a number of antigens could overlap with stem cells, which we wouldn't want to try to hurt. There are some novel CAR approaches to try to overcome that, and those are in very early phase testing, so we'll need to see how those results evolve.

References

1. Lin Y, Raje NS, Berdeja JG, et al. Idecabtagene vicleucel (ide-cel, bb2121), a BCMA-directed CAR T cell therapy, in patients with relapsed and refractory multiple myeloma: updated results from phase 1 CRB-401 study. Presented at: 2020 ASH Annual Meeting & Exposition; December 5-8, 2020; Virtual. Abstract 131.

2. Munshi NC, Anderson Jr LD, Jagannath S, et al. Idecabtagene vicleucel (ide-cel; bb2121), a BCMA-targeted CAR T-cell therapy, in patients with relapsed and refractory multiple myeloma (RRMM): Initial KarMMa results.J Clin Oncol. 2020;38(suppl):8503. doi:10.1200/JCO.2020.38.15_suppl.8503

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Updated Findings Show Continued Efficacy for CAR T-Cell Therapy in Heavily Pretreated Myeloma - Targeted Oncology

Bone Marrow Stem Cells Comments Off on Updated Findings Show Continued Efficacy for CAR T-Cell Therapy in Heavily Pretreated Myeloma – Targeted Oncology | December 14th, 2020

The allogeneic off-the-shelf CD22-directed T-cell product, UCART22, showed early signs of activity and no evidence of unexpected toxicities at 2 dose levels for adult patients with relapsed/refractory CD22-positive B-cell acute lymphoblastic leukemia, according to the results of a study presented during the 2020 ASH Annual Meeting.1

In the phase 1 BALLI-01 (NCT04150497) dose-escalation and dose-expansion study, 2 patients at the 1 x 105 cells/kg dose achieved a complete remission (CR) with incomplete hematologic recovery on day 28. One of these patients attained a minimal residual disease (MRD)positive CR at day 42 followed by subsequent inotuzumab ozogamicin (Besponsa) and then transplant.

One patient at dose level 2, 1 x 106 cells/kg, experienced a significant bone marrow blast reduction at day 28, followed by disease progression.

No patients experienced dose-limiting toxicities (DLTs), immune effector cellassociated neurotoxicity syndrome (ICANS), graft-versus-host disease (GVHD), adverse effects (AE) of special interest (AESI), a UCART22-related AE that was grade 3 or higher, or a serious AE (SAE).

UCART22 showed no unexpected toxicities at the doses of 1 x 105 cells/kg and 1 x 106 cells/kg with fludarabine and cyclophosphamide lymphodepletion, lead study author Nitin Jain, MD, an assistant professor in the Department of Leukemia, The University of Texas MD Anderson Cancer Center, said in a virtual presentation during the meeting. Host immune recovery was observed early, and the addition of alemtuzumab [Lemtrada] to fludarabine and cyclophosphamide lymphodepletion is currently being explored with the goal to achieve deeper and more sustained T-cell depletion and to promote expansion and persistence of UCART22.

Standard treatment for adult patients with B-cell ALL includes multiagent chemotherapy with or without allogeneic stem cell transplant. However, 30% to 60% of patients with newly diagnosed B-cell ALL who achieve a CR will relapse, and the expected 5-year survival rate for those with relapsed/refractory disease is approximately 10%.

Previously, UCART19, when paired with lymphodepletion using fludarabine, cyclophosphamide, and alemtuzumab, was found to show efficacy in this patient population.2

CD22 is an FDA-approved therapeutic target in B-cell ALL. UCART22 is an immediately available, standardized, manufactured agent with the ability to re-dose, and its CAR expression redirects T cells to tumor antigens, Jain explained.

Moreover, through its mechanism of action, TRAC becomes disrupted using Transcription activator-like effector nucleases (Talen) technology to eliminate TCR from cell surface and reduce the risk of GVHD. CD52 is also disrupted with the use of Talen to eliminate sensitivity to lymphodepletion with alemtuzumab. Finally, there is a CD20 mimotope for rituximab (Rituxan) as a safety switch, Jain added.

UCART22 has also demonstrated in vivo antitumor activity in immune-compromised mice that were engrafted with CD22-positive Burkitt lymphoma cells in a dose-dependent manner.

In the dose-escalation/dose-expansion BALLI-01 study, investigators are enrolling up to 30 patients in a modified Toxicity Probability Interval design. There are 3 cohorts, which have 2 to 4 patients on each cohort: 1 x 105 cells/kg (dose level 1), 1 x 106 cells/kg (dose level 2), and 5 x 106 cells/kg. The focus of the dose-escalation phase of the trial was to determine the maximum-tolerated dose (MTD) and the recommended phase 2 dose (RP2D) before heading into the dose-expansion portion of the trial.

To be eligible for enrollment, patients must have been between 18 and 70 years old, have acceptable organ function, an ECOG performance status of 0 or 1, at least 90% of B-cell ALL blast CD22 expression, and had previously received at least 1 standard chemotherapy regimen and at least 1 salvage regimen.

End points of the trial included safety and tolerability, MTD/R2PD, investigator-assessed response, immune reconstitution, and UCART22 expansion and persistence.

The lymphodepletion regimens were comprised of fludarabine (at 30 mg/m2 x 4 days) plus cyclophosphamide (1 g/m2 x 3 days); the study has since been amended to include the regimen of fludarabine (at 30 mg/m2 x 3 days), cyclophosphamide (500 g/m2 x 3 days), and alemtuzumab (20 mg/day x 3 days) and is currently enrolling patients.

Following screening, lymphodepletion, and UCART22 infusion, patients underwent an observation period for DLTs with a primary disease evaluation at 28 days; additional efficacy evaluations occurred at 56 days and 84 days. Patients were followed for 2 years and continued to be assessed for long-term follow-up.

As of July 1, 2020, 7 patients were screened, of which 1 patient failed and 6 were therefore enrolled on the study. One patient discontinued therapy before receiving UCART22 due to hypoxia from pneumonitis that was linked with lymphodepletion. Five patients were treated with UCART22 at dose level 1 (n = 3) and dose level 2 (n = 2).

The median age of participants was 24 years (range, 22-52), 3 of the 5 patients were male, and 3 had an ECOG performance status of 0. The median number of prior therapies was 3 (range, 2-6), and there were a median 35% bone marrow blasts (range, 10%-78%) prior to lymphodepletion.

Three patients had complex karyotype and 2 had diploid cytogenetics. One patient each had the following molecular abnormalities: CRLF2, CRLF2 and JAK2, CDKN2A loss, KRAS and PTPN11, and IKZF1. Only 1 patient had undergone haploidentical transplant. Four patients previously received prior CD19- or CD22-directed therapy, including blinatumomab (Blincyto), inotuzumab ozogamicin (Besponsa), and CD19-directed CAR T-cell therapy. At study entry, 3 patients had refractory disease and 2 patients had relapsed disease.

Grade 3 or higher treatment-emergent AEs (TEAEs), which were unrelated to study treatment, included hypokalemia, anemia, increased bilirubin, and acute hypoxic respiratory failure. Also not related to UCART22, 3 patients experienced 4 treatment-emergent SAEs: porta-hepatis hematoma, sepsis, bleeding, and sepsis in the context of disease progression. No treatment discontinuations due to a treatment-related TEAE were reported.

The patient who achieved a CR followed by transplant was a 22-year-old male who had undergone 2 prior treatments for B-cell ALL and received UCART22 at a dose of 1 x 105 cells/kg. He did not experience CRS, ICANS, GVHD, nor a SAE, and all TEAEs were grade 1.

Jain also noted that host T-cell constitution was observed in all patients within the DLT observation period. UCART22 was also not detectable through flow cytometry or molecular analysis, the latter of which was at dose level 1 only.

References:

1. Jain N, Roboz GJ, Konopleva M, et al. Preliminary results of BALLI-O1: a phase I study of UCART22 (allogeneic engineered T cells expressing anti-CD22 chimeric antigen receptor) in adult patients with relapsed/refractory anti-CD22+ B-cell acute lymphoblastic leukemia (NCT04150497). Presented at: 2020 ASH Annual Meeting and Exposition; December 4-8, 2020; Virtual. Abstract 163.

2. Benjamin R, Graham C, Yallop D, et al. Preliminary data on safety, cellular kinetics and anti-leukemic activity of UCART19, an allogeneic anti-CD19 CAR T-cell product, in a pool of adult and pediatric patients with high-risk CD19+ relapsed/refractory b-cell acute lymphoblastic leukemia. Blood. 2018;132(suppl 1):896. doi:10.1182/blood-2018-99-111356.

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Early Signs of Activity and Tolerability Found in Allogeneic Product UCART22 for Patients with Relapsed/Refractory CD22+ B-Cell ALL - Cancer Network

Bone Marrow Stem Cells Comments Off on Early Signs of Activity and Tolerability Found in Allogeneic Product UCART22 for Patients with Relapsed/Refractory CD22+ B-Cell ALL – Cancer Network | December 14th, 2020

REDWOOD CITY, Calif.--(BUSINESS WIRE)--Jasper Therapeutics, Inc., a biotechnology company focused on hematopoietic cell transplant therapies, today announced clinical data from its ongoing multicenter Phase 1 clinical trial of JSP191, a first-in-class anti-CD117 monoclonal antibody, in patients with severe combined immune deficiency (SCID). The trial is evaluating JSP191 as a conditioning agent to enable stem cell transplantation in patients with SCID who are either transplant-naive or who received a prior stem cell transplant with a poor outcome.

Data from the first transplant-nave SCID patient in the Phase 1 trial, a 6-month-old infant, showed that a single dose of JSP191 administered prior to stem cell transplant was effective in establishing sustained donor chimerism followed by development of B, T and NK immune cells. No treatment-related adverse events were reported. The data were presented by primary investigator Rajni Agrawal-Hashmi, M.D., of Stanford University, at the 62nd American Society of Hematology (ASH) Annual Meeting & Exposition.

We have previously shown that JSP191 can be successfully used as a single conditioning agent in SCID patients who had failed a previous transplant, said Kevin N. Heller, M.D., Executive Vice President, Research and Development, of Jasper Therapeutics. This new data presented at ASH 2020 showing success in an infant with SCID undergoing a first transplant provides proof of concept of the safety and efficacy of the use of JSP191 as an alternative to genotoxic chemotherapies currently used to deplete stem cells prior to transplant.

Hematopoietic cell transplantation offers the only curative therapy for SCID, a severe genetic immune disorder that leaves patients without a functioning immune system. With this approach, standard-of-care chemotherapeutic conditioning regimens are given prior to transplant to reduce the number of blood stem cells in the bone marrow to make space for donor blood stem cells to engraft and cure the patient. JSP191 is designed to replace the need for chemotherapeutic conditioning agents, which are DNA-damaging and highly toxic.

Dr. Heller added, With our Phase 1 trials in SCID and hematologic disorders underway, we are planning to expand the development of JSP191 into additional indications, such as gene therapies, autoimmune diseases, Fanconis anemia and other rare disorders that can be cured by stem cell transplant.

The open-label, multicenter Phase 1 study is evaluating the safety, tolerability and efficacy of JSP191 as a conditioning agent in patients with SCID undergoing first or repeat hematopoietic cell transplantation. Up to three different doses of JSP191 are being assessed for dose-limiting toxicities. The trial is currently open for enrollment at Stanford University, the University of California, San Francisco, Memorial Sloan Kettering Cancer Center, the University of California, Los Angeles, and Cincinnati Childrens Hospital. Additional clinical trial sites in the United States will initiate enrollment in the coming weeks.

About SCID

Severe combined immune deficiency (SCID) is a group of rare disorders caused by mutations in genes involved in the development and function of infection-fighting immune cells. Infants with SCID appear healthy at birth but are highly susceptible to severe infections. The condition is fatal, usually within the first year or two of life, unless infants receive immune-restoring treatments, such as transplants of blood-forming stem cells, gene therapy or enzyme therapy.

About JSP191

JSP191 (formerly AMG 191) is a first-in-class humanized monoclonal antibody in clinical development as a conditioning agent that clears hematopoietic stem cells from bone marrow. JSP191 binds to human CD117, a receptor for stem cell factor (SCF) that is expressed on the surface of hematopoietic stem and progenitor cells. The interaction of SCF and CD117 is required for stem cells to survive. JSP191 blocks SCF from binding to CD117 and disrupts critical survival signals, causing the stem cells to undergo cell death and creating an empty space in the bone marrow for donor or gene-corrected transplanted stem cells to engraft.

Preclinical studies have shown that JSP191 as a single agent safely depletes normal and diseased hematopoietic stem cells, including in animal models of SCID, myelodysplastic syndromes (MDS) and sickle cell disease (SCD). Treatment with JSP191 creates the space needed for transplanted normal donor or gene-corrected hematopoietic stem cells to successfully engraft in the host bone marrow. To date, JSP191 has been evaluated in more than 90 healthy volunteers and patients.

JSP191 is currently being evaluated as a sole conditioning agent in a Phase 1/2 dose-escalation and expansion trial to achieve donor stem cell engraftment in patients undergoing hematopoietic cell transplant for severe combined immunodeficiency (SCID), which is potentially curable only by this type of treatment. JSP191 is also being evaluated in a Phase 1 study in patients with MDS or acute myeloid leukemia (AML) who are receiving hematopoietic cell transplant. For more information about the design of these clinical trials, visit http://www.clinicaltrials.gov (NCT02963064 and NCT04429191). Additional studies are planned to advance JSP191 as a conditioning agent for patients with other rare and ultra-rare monogenic disorders and autoimmune diseases.

About Jasper Therapeutics

Jasper Therapeutics is a biotechnology company focused on the development of novel curative therapies based on the biology of the hematopoietic stem cell. The companys lead compound, JSP191, is in clinical development as a conditioning antibody that clears hematopoietic stem cells from bone marrow in patients undergoing a hematopoietic cell transplant. This first-in-class conditioning antibody is designed to enable safer and more effective curative hematopoietic cell transplants and gene therapies. For more information, please visit us at jaspertherapeutics.com.

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Jasper Therapeutics Announces Data from First Transplant-naive Patient in Phase 1 Clinical Trial of JSP191 as Conditioning Agent in Patients with SCID...

Bone Marrow Stem Cells Comments Off on Jasper Therapeutics Announces Data from First Transplant-naive Patient in Phase 1 Clinical Trial of JSP191 as Conditioning Agent in Patients with SCID… | December 13th, 2020

DUARTE, Calif.--(BUSINESS WIRE)--City of Hope doctors participated in research presented at the American Society of Hematology (ASH) virtual meeting, Dec. 5 to 8, that are helping advance the treatment of blood cancers, including one study which demonstrated allogeneic stem cell transplants do have a survival benefit for older adults with myelodysplastic syndromes (MDS) compared with current standard of care.

The study is the largest and most definitive trial to demonstrate the benefits of an allogeneic stem cell transplantation for older adults with MDS, and is just one of numerous studies that City of Hope doctors help lead with the aim of finding more effective treatments of various blood cancers.

This years ASH conference truly showcases City of Hopes leadership in finding more effective treatments for blood cancers, said Stephen J. Forman, M.D., director of City of Hopes Hematologic Malignancies Research Institute. Whether its finding innovative treatments to make it possible for more older adults with cancer to receive stem cell transplants, or pursuing therapies that are more effective with fewer side effects, City of Hope doctors continue to lead innovative research in blood cancers and other hematological malignancies.

City of Hope doctors are leading novel clinical trials for patients with leukemia, lymphoma and other blood cancers.

Multicenter clinical trial led by City of Hope makes stem cell transplant possible for older adults with myelodysplastic syndromes

Allogeneic hematopoietic cell transplantation, or stem cell/bone marrow transplants, for blood cancers that have recurred or are difficult to treat can put the disease into long-term remission and provide a potential cure. The therapy establishes a new, disease-free blood and immune system by transplanting healthy blood stem cells from a donor into a cancer patient after destroying the patients unhealthy bone marrow.

City of Hope and other institutions started this therapy in 1976, primarily for younger patients with blood cancers. The therapy involves using high-dose chemotherapy and/or radiotherapy to make room for a person to receive new stem cells; serious side effects can also occur after transplant. Because of these and other considerations, for many years, older adults with blood cancers have not been considered for transplants.

City of Hope has been leading the way to make transplants possible for more older adults with various cancers.

A new study presented at ASH demonstrates transplants are now a possibility and beneficial for patients with myelodysplastic syndromes (MDS). Approximately 13,000 people in the United States each year are diagnosed with MDS, an umbrella term describing several blood disorders that begin in the bone marrow.

Co-led by City of Hopes Ryotaro Nakamura, M.D., director of City of Hopes Center for Stem Cell Transplantation, the study is the largest and first trial to demonstrate the benefits of an allogeneic stem cell transplantation for older adults with MDS as opposed to the standard of care currently provided to these patients. The multicenter trial for patients aged 50 to 75 with serious MDS compared how long transplant patients survived with those who didnt receive a transplant, as well as disease progression and quality of life. The transplant therapy used reduced-intensity conditioning, which delivers less chemotherapy and radiation before transplant and relies more on the anti-tumor effects of the therapy.

Between 2014 and 2018, the study enrolled 384 participants at 34 cancer centers nationwide. It included 260 patients who were able to find a donor for a transplant, as well as 124 patients who did not find a donor for a transplant.

After three years, nearly 48% of MDS patients who found a donor for transplant had survived compared with about 27% of those patients who didnt have a donor for transplant and received current hypomethylating therapy, a type of chemotherapy that is current standard of care for MDS. Leukemia-free survival which is relevant because myelodysplastic syndrome can develop into leukemia was also greater in transplant recipients after three years nearly 36% compared with about 21% for those who did not have a transplant.

There was a large and significant improvement in survival for patients who had a transplant, Nakamura said. The benefit margin in overall survival was over 20% (21.3%) for patients who had a transplant.

In addition, quality of life was the same for both transplant and nontransplant patients. There were no clinically significant differences when taking such measurements as physical and mental competency scores.

This is an extremely exciting study because it provides evidence that stem cell transplant is highly beneficial for older patients with serious MDS and will likely be practice-changing for this group, Nakamura said. Before, many doctors wouldnt even consider a transplant for this group of patients, but our study demonstrates that these patients should be evaluated for a transplant, which could potentially provide a cure for their disease.

The trial is part of Blood and Marrow Transplant Clinical Trials Network, which was established with support from the National Heart, Lung, and Blood Institute and National Cancer Institute, because of a critical need for multi-institutional clinical trials focused directly on improving survival for patients undergoing hematopoietic cell transplantation.

Updated results from a study of a potential new CAR T cell therapy, liso-cel, for relapsed/refractory chronic lymphocytic leukemia

Patients with relapsed or difficult-to-treat chronic lymphocytic leukemia/small lymphocytic leukemia continue to do well 24 months after receiving lisocabtagene maraleucel (liso-cel) chimeric antigen receptor (CAR) T cells, according to Tanya Siddiqi, M.D., director of City of Hopes Chronic Lymphocytic Leukemia (CLL) Program, which is part of the Toni Stephenson Lymphoma Center. She presented these findings during the 2020 ASH annual meeting virtual conference.

Overall, 23 and 22 patients were evaluated for safety and efficacy in this phase 1 trial, respectively. Their median age was 66 and they had received a median of four prior therapies; all patients had received prior ibrutinib, which is one of the standard of care drugs for CLL.

The overall response rate, or patients whose CLL diminished after liso-cel CAR T cell therapy, was 82%, and 45% of patients also had complete responses, or remissions.

After 15 months of treatment, 53% of patients maintained their responses to the therapy, and six patients continued to be in remission. After 18 months, 50% of patients maintained their response, and there were five remissions. All seven patients who completed the 24-month study maintained their response. Median progression-free survival, or the amount of time the cancer did not worsen during and after treatment, was 18 months.

As early as 30 days after receiving liso-cel, about 75% of 20 patients evaluated for the therapys efficacy had undetectable minimal residual disease (MRD, or no detectable traces of cancer) in the blood and 65% had undetectable MRD in the marrow.

These are remarkable results for a group of patients that prior to this CAR T treatment had no good treatment options if they had already progressed on novel targeted therapies like ibrutinib and venetoclax, Siddiqi said. Liso-cel is providing new hope for CLL patients, and the remissions are also long lasting with few serious side effects.

Because of its safety and effectiveness in clinical trials, liso-cel, which targets the CD19 protein on cancer cells, may soon receive approval from the Food and Drug Administration as a commercial therapy for relapsed or refractory B cell lymphoma. City of Hope is also taking part in the phase 2 trial of liso-cel in CLL patients.

Consolidation treatment with brentuximab vedotin/nivolumab after auto stem cell transplant for relapsed/refractory Hodgkin lymphoma patients leads to 18-month progression free-survival

Patients who have Hodgkin lymphoma that has not been cured by initial treatment will usually receive more chemotherapy and an autologous hematopoietic cell transplant. But even after a stem cell transplant, recurrence of the lymphoma is possible.

This multicenter phase 2 clinical trial, led by City of Hope, examined whether treating patients with brentuximab vedotin (BV), an antibody-based treatment that targets delivery of chemotherapy only to Hodgkin lymphoma cells, and nivolumab, which works by blocking the PD-1 immune checkpoint pathway that Hodgkin lymphoma hijacks to evade the immune system, was safe and effective as consolidation to prevent disease recurrence after transplant in patients with high-risk Hodgkin lymphoma.

Alex Herrera, M.D., assistant professor in City of Hope's Department of Hematology & Hematopoietic Cell Transplantation, discussed 19-month progression-free survival for trial participants, as well as overall survival, safety and response rates during ASH.

Fifty-nine patients were enrolled in the trial. Patients received the consolidation treatment starting a median of 54 days after transplant, and received a median of eight cycles of the therapy. The 19-month progression-free survival in patients was 92%, and overall survival in patients was 98%. Only three patients relapsed after receiving BV and nivolumab consolidation after transplant, and one patient passed away due to PCP pneumonia unrelated to the study treatment.

The most common sides effects related to the treatment were peripheral neuropathy (51%), neutropenia (42%), fatigue (37%) and diarrhea (29%).

Using brentuximab vedotin and nivolumab after transplant is a promising approach for preventing relapse of Hodgkin lymphoma after transplant that merits further study, Herrera said.

City of Hope doctors published research on innovative approaches against graft-versus-host-disease

Historically, a bone marrow/stem cell transplant is more likely to be effective if patients have a donor who is a 100% match, or as close to that as possible. Finding that perfect match is more difficult for African Americans, Latinos, Asian Americans and other ethnic groups as bone marrow donor registries are still trying to increase the number of non-white donors.

Transplant doctors are also looking for ways to make the transplant more effective if a perfect match cant be found; donors who are not a 100% or close match are referred to as mismatched unrelated. One major barrier to these transplants being effective is a condition known as graft-versus-host-disease (GVHD). The condition, which is more common in transplants involving mismatched donors, is caused by donated cells that recognize the recipient's cells as foreign and attack them, damaging the skin, eyes, lungs, liver and digestive tract.

In order to help prevent GVHD, therapies can be given to patients after transplant. A prospective clinical trial at City of Hope examined whether using cyclophosphamide after an infusion of stem cells could prevent GVHD.

Thirty-eight patients were enrolled in the trial, which is the first to examine the use of cyclophosphamide in transplants with a mismatched unrelated donor.

With a median follow-up period of 18 months, 87% of patients had survived, and the majority did not relapse or develop severe GVHD.

During the first 100 days post-transplant, acute GVHD incidence was around 50%; most cases were mild to moderate while severe GVHD was only 15%. A year after transplant, 52% of patients had some form of chronic GVHD, but only 3% had moderate or severe chronic GVHD.

The trial also examined toxicities, infections and immune system recovery after the transplant.

Our study showed that patients who received a transplant from a mismatched unrelated donor using post-transplant cyclophosphamide had a comparable outcome to what we see in matched donor transplants with few cases of serious GVHD cases, said Monzr Al Malki, M.D., associate clinical professor of City of Hopes Department of Hematology & Hematopoietic Cell Transplantation and director of unrelated donor BMT and haploidentical transplant programs. Our data support further development of this therapy in transplant patients who would otherwise have no suitable donors and limited treatment options.

City of Hopes Anthony Stein, M.D., also led a pilot trial that examined whether a new treatment approach may reduce the rate of GVHD in patients with acute myelogenous leukemia (AML) who have received an allogeneic hematopoietic cell transplant. Although a transplant can put AML into remission, GVHD remains the main serious complication after transplant, impacting a patients quality of life and increasing health care costs.

Eighteen patients between the ages of 18 and 60 enrolled in the trial. Each patient received a novel conditioning regimen of total marrow and lymphoid irradiation, which targets a patients marrow and lymph nodes while reducing radiation to other parts of the body, and cyclophosphamide, a therapy that suppresses the immune system. Tacrolimus was also provided to patients.

Radiation was delivered twice daily on the fourth day before transplant and on the day of transplant without chemotherapy. Cyclophosphamide was given to patients on the third and fourth day after transplant.

There were mild to moderate toxicities. Acute GVHD developed in two patients and only one patient developed the most serious GVHD. Five patients developed mild chronic GVHD. Nearly 60% of patients had not developed GVHD or the condition had not worsened after a year.

After a year, all patients had survived, and 83% had not relapsed. After two years, nearly 86% of patients had survived, and the relapse number remained the same.

The therapeutic approach did not interfere with the transplant process as all patients engrafted, or the donors cells started to produce bone marrow and immune cells.

This is welcome news for AML patients who receive an allogeneic transplant and are concerned about developing GVHD, said Stein, associate director of City of Hope's Gehr Family Center for Leukemia Research. Our study demonstrated that using this new combination of therapies is safe and feasible and does not interfere with the engraftment process.

In addition, after a year, patients in this trial were no longer taking immunosuppressive therapy and had an improved quality of life, Stein said. He added that because many of the patients didnt have GVHD, health care costs after a year were also lower than if patients required treatment for the condition.

City of Hope now plans to start a larger phase 2 trial using this treatment approach.

Bispecific antibodies continue to show promise against blood cancers

Mosunetuzumab is a promising new immunotherapy for the treatment of relapsed/refractory non-Hodgkin lymphoma (NHL) that recently received breakthrough therapy designation from the Food and Drug Administration. The designation is intended to expedite the development and review of drugs for serious or life-threatening diseases.

Elizabeth Budde, M.D., Ph.D., assistant professor in City of Hope's Department of Hematology & Hematopoietic Cell Transplantation, is leading clinical trials that are showing how well mosunetuzumab works against NHL. At this years ASH, one trial discussed is how the therapy is working for patients with follicular lymphoma.

Mosunetuzumab is a bispecific antibody targeting both CD3 (a protein found on the surface on T cells) and CD20 on the surface of B cells. The therapy redirects T cells to engage and eliminate malignant B cells.

Sixty-two patients, ranging in age from 27 to 85 years old, were enrolled in the trial for follicular lymphoma. They received intravenous doses of mosunetuzumab.

Sixty-eight percent of the patients responded to the therapy, and 50% had a complete response, or went into remission. Consistent complete response rates occurred even in patients with double refractory disease and patients who received prior CAR T cell therapy. Median duration of response was approximately 20 months, and media progression free survival was nearly one year.

Side effects were reported in 60 patients with serious adverse effects in 22 patients. The most frequently reported serious side effects were hypophosphatemia, an electrolyte disorder, and neutropenia, a condition caused by low numbers of white blood cells. Fourteen patients experienced cytokine release syndrome, but none required extensive treatment for it.

Neurological side effects included headache, insomnia and dizziness.

Patients in this trial had high response rates and their disease remained in control for a year, Budde said. This is remarkable because many patients were no longer responding to other therapies.

About City of Hope

City of Hope is an independent biomedical research and treatment center for cancer, diabetes and other life-threatening diseases. Founded in 1913, City of Hope is a leader in bone marrow transplantation and immunotherapy such as CAR T cell therapy. City of Hopes translational research and personalized treatment protocols advance care throughout the world. Human synthetic insulin and numerous breakthrough cancer drugs are based on technology developed at the institution. A National Cancer Institute-designated comprehensive cancer center and a founding member of the National Comprehensive Cancer Network, City of Hope has been ranked among the nations Best Hospitals in cancer by U.S. News & World Report for 14 consecutive years. Its main campus is located near Los Angeles, with additional locations throughout Southern California. For more information about City of Hope, follow us on Facebook, Twitter, YouTube or Instagram.

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City of Hope Doctors Present Innovative Therapies to Better Treat Blood Cancers at American Society of Hematology Virtual Conference - Business Wire

Bone Marrow Stem Cells Comments Off on City of Hope Doctors Present Innovative Therapies to Better Treat Blood Cancers at American Society of Hematology Virtual Conference – Business Wire | December 13th, 2020

A FORMER hairdresser from Bournemouth is appealing for people to help raise money to have life-saving surgery in Mexico to get rid of her Multiple Sclerosis once and for all.

Having been admitted to Royal Bournemouth Hospital for a suspected stroke or brain tumour in March 2017, at the age of 47, Kirsten Hannibal was found to have multiple lesions on her brain and was diagnosed with CIS which later progressed to MS.

During lockdown, Kirsten has researched into different ways to stop Multiple Sclerosis dead in its tracks, one of them being Hematopoietic Stem Cell Transplantation.

Although the procedure, which involves the transplantation of multipotent hematopoietic stem cells, usually derived from bone marrow, is not widely accessible in the UK, it is available in Mexico, considered a world class hub for HSCT.

However she must raise over 40,000 to cover flights to Mexico as well as the cost of the procedure.

Vicky Dixon has set up a crowdfunding page to raise money for Kirstens medical procedure.

In a statement written on her crowdfunding page, she said: Our family are joining forces to raise the money needed to send our Kirsten to Mexico for Hematopoietic Stem Cell Transplantation treatment that is not universally available on the NHS, but will hopefully give Kirsten a chance of a future; a life free of pain, disability and heart breaking challenges.

We hope that Kirsten can follow the footsteps of other British MS sufferers and go to Mexico, a world class centre for HSCT, and cheaper than the UK, at the cost of 43,500.

The first large, randomised control trial, and several meta-analyses of HSCT, have confirmed that HSCT is a very effective therapy. This is now tipping the scales for HSCT becoming a mainstream treatment for MS in Britain.

However, the treatment has to take place before the MS becomes too advanced, and as it will be years before HSCT might be offered more widely, Kirsten would by then be swallowed up by the MS and not a suitable candidate for treatment.

Kirsten is on the brink of becoming too disabled for this treatment, hence the urgency of our appeal.

Sadly, the 46-year-old is now travelling a path similar to one her family have walked before.

In 1984 her mother at the age of 32 was diagnosed with lymphoblastic leukaemia and the Echo covered the story.

Her mother underwent aggressive chemotherapy and was the receiver of a ground-breaking treatment with a bone marrow transplant.

She was the first patient to receive this treatment in the south and, whilst the treatment was deemed a success, sadly her mother died.

Lynda Smiths legacy lives on because her bravery in allowing this treatment to take place is now the lifeline to many children and adults alike who survive leukaemia.

The treatment Kirsten is looking to have is similar to her mothers treatment, except it would be her own bone marrow that would be harvested. She will then be given chemotherapy and then the day Kirsten longs for, freedom from the disease.

The new birthday she dreams of is a stem cell birthday celebrated when the bone marrow is put back into her body giving her the chance of stopping Multiple Sclerosis.

So far, Kirstens fundraising appeal has raised 4,535, just over 10 per cent of her target.

To donate, visit https://www.gofundme.com/f/multiple-sclerosis-and-an-urgent-bid-for-freedom?utm_source=customer&utm_medium=email&utm_campaign=p_cp+sharesheet.

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Bid to fund stem cell treatment in Mexico for woman with MS - Bournemouth Echo

Bone Marrow Stem Cells Comments Off on Bid to fund stem cell treatment in Mexico for woman with MS – Bournemouth Echo | December 13th, 2020

Our goal with omidubicel is to revolutionize the field of bone marrow transplantation and bring a potentially curative cell therapy option to thousands of patients who are in need of a bone marrow transplant, but lack a suitable stem cell donor. These results bring us one step closer towards that goal, said Julian Adams, Ph.D., chief executive officer of Gamida Cell. Whats more, transplantation with omidubicel has been shown to result in more rapid neutrophil engraftment, a decrease in the amount of time patients spend in hospital, and a reduction in infections. These are very meaningful outcomes for patients and may also lessen the financial costs of certain aspects of the transplant.

Gamida Cell previously reported top-line data for omidubicel. In October, the company reported that the omidubicel phase 3 study achieved its secondary endpoints, analyzed in all randomized patients (intent-to-treat). In May, Gamida Cell reported that the study achieved its primary endpoint, demonstrating a highly statistically significant reduction in time to neutrophil engraftment, a key milestone in a patients recovery from a bone marrow transplant.

These pivotal data form the basis of a Biologics License Application (BLA) that Gamida Cell expects to initiate on a rolling basis before the end of this year. Gamida Cell is preparing to be launch ready in anticipation of potential FDA approval as early as the fourth quarter of 2021, subject to ongoing FDA discussions on manufacturing, quality and other matters.

The live event will be available here. More information about the Phase 3 study of omidubicel and the other updates included in this release can be found in the Pipeline Deep Dive presentation on the Gamida Cell website immediately following the event.

Details of Phase 3 Endpoints

As previously reported, Gamida Cell achieved positive topline results from its Phase 3 clinical study evaluating the safety and efficacy of omidubicel. The median time to neutrophil engraftment was 12 days for patients randomized to omidubicel compared to 22 days for the comparator group (p<0.001). Neutrophil engraftment is a measure of how quickly the stem cells a patient receives in a transplant are established and begin to make healthy new cells, and rapid neutrophil engraftment has been associated with fewer infections and shorter hospitalizations.

Today, Gamida Cell announced the details of achieving all three of the prespecified secondary endpoints of the study, analyzed in all randomized patients (intent-to-treat). These secondary endpoints were the proportion of patients who achieved platelet engraftment by day 42, the proportion of patients with grade 2 or grade 3 bacterial or invasive fungal infections in the first 100 days following transplant, and the number of days alive and out of the hospital in the first 100 days following transplant. All three secondary endpoints demonstrated statistical significance in an intent-to-treat analysis.

Additionally, Gamida Cell reported that the exploratory endpoints in the study demonstrated a reduction in the cumulative incidence of viral infections.

The international, multi-center, randomized Phase 3 study for omidubicel was designed to evaluate the safety and efficacy of omidubicel in patients with hematologic malignancies undergoing allogeneic bone marrow transplant compared to a comparator group of patients who received a standard umbilical cord blood transplant.

The company anticipates reporting the full data set in a peer-reviewed setting in the first half of 2021.

Commercial Readiness

The company discussed the market potential for omidubicel and launch plans. These included quantifying the market opportunity and keys aspects for a successful launch.

As it prepares for the potential commercial launch of omidubicel, the company also announced plans for the Gamida Cell Assist program, which has been designed to focus on patient access and support of every individual and their caregiver at each step of the transplant process. Once the program is launched, the Gamida Cell Assist case management team would provide a consistent, single point of contact for patients and health care professionals. This team would work with the transplant center to track each individual patients omidubicel therapy and provide real-time updates on the status of the therapy. Gamida Cell Assist is also designed to provide additional services, including coverage and reimbursement support, and patient and caregiver support, which may include financial, travel, and lodging assistance.

At Gamida Cell we are inspired to cure, with the goal of pioneering new standards of care for patients with blood cancers and serious blood diseases, said Michele Korfin, chief operating and chief commercial officer of Gamida Cell. The transplant process can be challenging and complex for the patient, caregivers and the entire transplant care team. As we prepare for commercialization, we have developed Gamida Cell Assist to serve as a comprehensive support program to focus on assuring a positive patient experience with omidubicel. We are committed to supporting patients and their caregivers during every step of their journey and enabling what matters most, a successful clinical outcome that makes a meaningful difference for patients.

Update on Natural Killer Cell Therapy GDA-201

In an oral presentation at the recent American Society of Hematology (ASH) 62nd Annual Meeting, it was shown that GDA-201 was well tolerated and no dose limiting toxicities were observed in the Phase 1 clinical study. GDA-201 demonstrated significant clinical activity in patients with non-Hodgkin lymphoma, with 13 complete responses and one partial response observed in 19 patients, for a response rate of 74 percent. Full details of the presentation can be found in the press release.

Phase 2 Study of Omidubicel in Patients with Severe Aplastic Anemia

In a poster presentation at ASH, it was shown that patients with severe aplastic anemia treated with omidubicel achieved sustained early engraftment. These data, which were presented on December 5 by Mohamed Samour, M.D., Hematology Branch, National Heart, Lung, and Blood Institute, Bethesda, MD, are the first evidence that omidubicel can result in rapid engraftment and can achieve sustained hematopoiesis in patients who are at high risk for graft failure with conventional umbilical cord blood transplant.

About Omidubicel

Omidubicel is an advanced cell therapy under development as a potential life-saving allogeneic hematopoietic stem cell (bone marrow) transplant solution for patients with hematologic malignancies (blood cancers). In both Phase 1/2 and Phase 3 clinical studies (NCT01816230, NCT02730299), omidubicel demonstrated rapid and durable time to engraftment and was generally well tolerated.12 Omidubicel is also being evaluated in a Phase 1/2 clinical study in patients with severe aplastic anemia (NCT03173937). The aplastic anemia investigational new drug application is currently filed with the FDA under the brand name CordIn, which is the same investigational development candidate as omidubicel. For more information on clinical trials of omidubicel, please visit http://www.clinicaltrials.gov.

Omidubicel is an investigational therapy, and its safety and efficacy have not been established by the U.S. Food and Drug Administration or any other health authority.

About GDA-201

Gamida Cell applied the capabilities of its NAM-based cell expansion technology to develop GDA-201, an innate natural killer (NK) cell immunotherapy for the treatment of hematologic and solid tumors in combination with standard of care antibody therapies. GDA-201 addresses key limitations of NK cells by increasing the cytotoxicity and in vivo retention and proliferation in the bone marrow and lymphoid organs of NK cells expanded in culture. GDA-201 is in Phase 1 development through an investigator-sponsored study in patients with refractory non-Hodgkin lymphoma and multiple myeloma.3 For more information on the clinical study of GDA-201, please visit http://www.clinicaltrials.gov.

GDA-201 is an investigational therapy, and its safety and efficacy has not been established by the U.S. Food and Drug Administration or any other health authority.

About the NAM Therapeutic Platform

Gamida Cells proprietary NAM-based cell expansion platform is designed to enhance the number and functionality of donor cells in culture, enabling the creation of potentially transformative therapies that move beyond what is possible with existing approaches. The NAM therapeutic platform leverages the unique properties of nicotinamide to enable the expansion of multiple cell types including stem cells and natural killer (NK) cells with appropriate growth factors to maintain the cells' original phenotype and potency. This can enable the administration of a therapeutic dose of cells with the potential to improve patient outcomes.

About Gamida Cell

Gamida Cell is an advanced cell therapy company committed to cures for patients with blood cancers and serious blood diseases. We harness our cell expansion platform to create therapies with the potential to redefine standards of care in areas of serious medical need. For additional information, please visit http://www.gamida-cell.com or follow Gamida Cell on LinkedIn or Twitter at @GamidaCellTx.

Cautionary Note Regarding Forward Looking Statements

This press release contains forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995, including with respect to timing of initiation and progress of and data reported from the clinical trials of Gamida Cells product candidates, anticipated regulatory filings, launch readiness and FDA approval, commercialization efforts and Gamida Cells expectations regarding its projected ongoing operating activities, which statements are subject to a number of risks, uncertainties and assumptions, including, but not limited to the scope, progress and expansion of Gamida Cells clinical trials and ramifications for the cost thereof; and clinical, scientific, regulatory and technical developments. In light of these risks and uncertainties, and other risks and uncertainties that are described in the Risk Factors section and other sections of Gamida Cells Annual Report on Form 20-F, filed with the Securities and Exchange Commission (SEC) on February 26, 2020, its Reports on Form 6-K filed with the SEC on May 18, 2020, August 11, 2020 and November 10, 2020, and other filings that Gamida Cell makes with the SEC from time to time (which are available at http://www.sec.gov), the events and circumstances discussed in such forward-looking statements may not occur, and Gamida Cells actual results could differ materially and adversely from those anticipated or implied thereby. Any forward-looking statements speak only as of the date of this press release and are based on information available to Gamida Cell as of the date of this release.

______________________1 Horwitz M.E., Wease S., Blackwell B., Valcarcel D. et al. Phase I/II study of stem-cell transplantation using a single cord blood unit expanded ex vivo with nicotinamide. J Clin Oncol. 2019 Feb 10;37(5):367-374.2 Gamida Cell press release, Gamida Cell Announces Positive Topline Data from Phase 3 Clinical Study of Omidubicel in Patients with High-Risk Hematologic Malignancies, issued May 12, 2020. Last accessed August 31, 2020.3 Clinicaltrials.gov identifier NCT03019666

View source version on businesswire.com: https://www.businesswire.com/news/home/20201209005256/en/

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Gamida Cell Provides Pipeline Update, Including Detailed Results of Pivotal Phase 3 Clinical Study of Omidubicel, and Prepares to Start BLA Submission...

Bone Marrow Stem Cells Comments Off on Gamida Cell Provides Pipeline Update, Including Detailed Results of Pivotal Phase 3 Clinical Study of Omidubicel, and Prepares to Start BLA Submission… | December 13th, 2020

NEW YORK, Dec. 7, 2020 /PRNewswire/ --Actinium Pharmaceuticals, Inc. (NYSE AMERICAN: ATNM) ("Actinium" or the "Company") today announced that safety data from its ongoing pivotal Phase 3 SIERRA trial of Iomab-B in patients with relapsed or refractory Acute Myeloid Leukemia (R/R AML) were presented at the 2020 American Society of Hematology (ASH) annual meeting. The oral presentation highlighted Iomab-B's targeting ability and corresponding safety data from 110 patients from the SIERRA trial for which detailed safety data was available. Iomab-B targets CD45, an antigen expressed on leukemia and lymphoma cancer cells and immune cells including bone marrow stem cells but not cells outside of the blood forming or hematopoietic system. This allows high amounts of radiation to be delivered to the bone marrow via Iomab-B while sparing healthy organs. As a result, statistically significant lower rates of sepsis were reported as well as lower rates of febrile neutropenia, mucositis and non-relapse transplant related mortality in patients receiving Iomab-B and bone marrow transplant (BMT) compared to patients that received salvage therapy and a BMT. In addition, patients that crossed over to receive Iomab-B and went to BMT after receiving salvage therapy but not achieving a complete response also had lower rates of sepsis, febrile neutropenia, mucositis and non-relapse transplant related mortality.

Dr. Mark Berger, Actinium's Chief Medical Officer, commented, "We are pleased that the engraftment and safety profile of Iomab-B remains positive and consistent with prior interim safety results at 75% of patient enrollment in SIERRA and also consistent with the large body of historical data from Iomab-B. Collectively, this data gives excitement as we approach the upcoming ad hoc interim analysis for SIERRA that will be completed by year-end and the ultimate potential of Iomab-B for patients with R/R AML and other blood cancers as a targeted conditioning regimen."

Safety data presented in ASH oral presentation are highlighted in the table below:

ASH Oral Presentation:High Doses of Targeted Radiation with Anti-CD45 Iodine (131I) Apamistamab [Iomab-B] Do Not Correlate with Incidence of Mucositis, Febrile Neutropenia or Sepsis in the Prospective, Randomized Phase 3 Sierra Trial for Patients with Relapsed or Refractory Acute Myeloid Leukemia

Adverse Event

Received Iomab-B/HCT (N=47)1% (N)

No CR Crossed over to Iomab-B/HCT (N=30)2% (N)

Achieved CR and received Std HCT (N=9) % (N)

Sepsis

4.3 (2)

22.2 (6)

33.3 (3)

Febrile Neutropenia Gr 3-4

34.8 (16)

40.7 (11)

55.6 (5)

Mucositis Gr 3-4

10.9 (5)

18.5 (5)

33.3 (3)

Day +100 Non-Relapse Mortality3

2/45

(4.4%)

3/26

(11.5%)

2/9

(22.2%)

1 Adverse Event data available for 46 of 47 evaluable patients

2 Adverse Event data available for 27 of 30 evaluable patients

3 Iomab-B arm: 4 patients unevaluable. Conventional Care Arm: 4 patients unevaluable

Patient Group

No. of Patients

Radiation dose delivered to the Marrow. Median (range)

Radiation dose to GI tract. Median (range)

Iomab-B

47

14.9 Gy

(4.6-32)

2.8 Gy

(1.6-6.7)

Vijay Reddy, Vice President, Clinical Development and Head of BMT, "The targeted nature of Iomab-B makes it highly differentiated from current BMT conditioning regimens that are largely comprised of non-targeted cytotoxic chemotherapies. These data from SIERRA showing higher rates of sepsis, neutropenia and mucositis in patients receiving chemotherapy are consistent with the literature and unfortunately what we expected but hope to address with Iomab-B. Particularly, chemotherapy's effect on the GI tract and resulting mucositis, which we believe is leading to the higher rates of sepsis seen in the control arm. We are highly encouraged by the lower rates of adverse events and the universal engraftment reported from SIERRA and excited for the potential of targeted conditioning could have an BMT access, patient outcomes and quality of life."

About Iomab-B

Iomab-B (I-131 apamistamab) via the monoclonal antibody apamistamab, targets CD45, an antigen widely expressed on leukemia and lymphoma cancer cells, B cells and stem cells. Apamistamab is linked to the radioisotope iodine-131 (I-131) and once attached to its target cells emits energy that travels about 100 cell lengths, destroying a patient's cancer cells and ablating their bone marrow. By carrying iodine-131 directly to the bone marrow in a targeted manner, Actinium believes Iomab-B will avoid the side effects of radiation on most healthy tissues while effectively killing the patient's cancer and marrow cells.

Iomab-B is currently being studied in the pivotal Phase 3 SIERRA (Study of Iomab-B in Relapsed or Refractory AML) trial, a 150-patient, randomized controlled clinical trial in patients with relapsed or refractory Acute Myeloid Leukemia (AML) who are age 55 and above. The SIERRA trial is being conducted at preeminent transplant centers in the U.S. with the primary endpoint of durable Complete Remission (dCR) at six months and a secondary endpoint of overall survival at one year. Upon approval, Iomab-B is intended to prepare and condition patients for a bone marrow transplant, also referred to as a hematopoietic stem cell transplant, in a potentially safer and more efficacious manner than the non-targeted intensive chemotherapy conditioning that is the current standard of care in bone marrow transplant conditioning. A bone marrow transplant is often considered the only potential cure for patients with certain blood-borne cancers and blood disorders. Additional information on the Company's Phase 3 clinical trial in R/R can be found at http://www.sierratrial.com.

About Actinium Pharmaceuticals, Inc. (NYSE: ATNM)

Actinium Pharmaceuticals, Inc. is a clinical-stage biopharmaceutical company developing ARCs or Antibody Radiation-Conjugates, which combine the targeting ability of antibodies with the cell killing ability of radiation. Actinium's lead application for our ARCs is targeted conditioning, which is intended to selectively deplete a patient's disease or cancer cells and certain immune cells prior to a BMT or Bone Marrow Transplant, Gene Therapy or Adoptive Cell Therapy (ACT) such as CAR-T to enable engraftment of these transplanted cells with minimal toxicities. With our ARC approach, we seek to improve patient outcomes and access to these potentially curative treatments by eliminating or reducing the non-targeted chemotherapy that is used for conditioning in standard practice currently. Our lead product candidate, I-131 apamistamab (Iomab-B) is being studied in the ongoing pivotal Phase 3 Study of Iomab-B in Elderly Relapsed or Refractory Acute Myeloid Leukemia (SIERRA) trial for BMT conditioning. The SIERRA trial is over seventy-five percent enrolled and positive single-agent, feasibility and safety data has been highlighted at ASH, TCT, ASCO and SOHO annual meetings. More information on this Phase 3 clinical trial can be found at http://www.sierratrial.com. I-131 apamistamab will also be studied as a targeted conditioning agent in a Phase 1 study with a CD19 CAR T-cell therapy and in a Phase 1/2 anti-HIV stem cell gene therapy with UC Davis. In addition, we are developing a multi-disease, multi-target pipeline of clinical-stage ARCs targeting the antigens CD45 and CD33 for targeted conditioning and as a therapeutic either in combination with other therapeutic modalities or as a single agent for patients with a broad range of hematologic malignancies including acute myeloid leukemia, myelodysplastic syndrome and multiple myeloma. Ongoing combination trials include our CD33 alpha ARC, Actimab-A, in combination with the salvage chemotherapy CLAG-M and the Bcl-2 targeted therapy venetoclax. Underpinning our clinical programs is our proprietary AWE (Antibody Warhead Enabling) technology platform. This is where our intellectual property portfolio of over 130 patents, know-how, collective research and expertise in the field are being leveraged to construct and study novel ARCs and ARC combinations to bolster our pipeline for strategic purposes. Our AWE technology platform is currently being utilized in a collaborative research partnership with Astellas Pharma, Inc. Website: http://www.actiniumpharma.com

Forward-Looking Statements for Actinium Pharmaceuticals, Inc.

This press release may contain projections or other "forward-looking statements" within the meaning of the "safe-harbor" provisions of the private securities litigation reform act of 1995 regarding future events or the future financial performance of the Company which the Company undertakes no obligation to update. These statements are based on management's current expectations and are subject to risks and uncertainties that may cause actual results to differ materially from the anticipated or estimated future results, including the risks and uncertainties associated with preliminary study results varying from final results, estimates of potential markets for drugs under development, clinical trials, actions by the FDA and other governmental agencies, regulatory clearances, responses to regulatory matters, the market demand for and acceptance of Actinium's products and services, performance of clinical research organizations and other risks detailed from time to time in Actinium's filings with the Securities and Exchange Commission (the "SEC"), including without limitation its most recent annual report on form 10-K, subsequent quarterly reports on Forms 10-Q and Forms 8-K, each as amended and supplemented from time to time.

Contacts:

Investors:Clayton Robertson Actinium Pharmaceuticals, Inc. [emailprotected]

Hans Vitzthum LifeSci Advisors, LLC[emailprotected](617) 430-7578

SOURCE Actinium Pharmaceuticals, Inc.

http://www.actiniumpharma.com/

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Actinium Highlights Iomab-B Safety Data Presented at the 62nd American Society of Hematology Annual Meeting - PRNewswire

Bone Marrow Stem Cells Comments Off on Actinium Highlights Iomab-B Safety Data Presented at the 62nd American Society of Hematology Annual Meeting – PRNewswire | December 13th, 2020

CAMBRIDGE, Mass.--(BUSINESS WIRE)--HighPassBio, an ElevateBio portfolio company dedicated to advancing novel targeted T cell immunotherapies, today discussed the ongoing Phase 1 trial of the companys lead product candidate, an engineered T cell receptor (TCR) T cell therapy targeting HA-1 expressing cancer cells in an oral presentation at the 62nd American Society of Hematology (ASH) Annual Meeting. The Phase 1 clinical trial, which is being conducted by researchers at Fred Hutchinson Cancer Research Center, is designed to assess the feasibility, safety, and efficacy of this novel cell therapy in the treatment of leukemia following hematopoietic stem cell transplant (HSCT).

The prognosis for leukemia patients whove relapsed or who have residual disease following allogeneic hematopoietic stem cell transplantation is often poor, but we believe that by targeting the minor H antigen, HA-1, through a novel T cell immunotherapy, we can potentially treat and prevent subsequent relapse, said Elizabeth Krakow, M.D., MSc., Assistant Professor, Clinical Research Division, Fred Hutchinson Cancer Research Center, principal investigator of the study, and presenting author. We have observed early promising indicators of anti-leukemic activity following treatment in this trial. We are eager to expand the trial to additional patients as we continue to research the feasibility, safety, and efficacy of this approach.

The abstract for the presentation titled Phase 1 Study of Adoptive Immunotherapy with HA-1-Specific CD8+ and CD4+ Memory T Cells for Children and Adults with Relapsed Acute Leukemia after Allogeneic Hematopoietic Stem Cell Transplantation (HCT): Trial in Progress, can be found on the ASH website under the abstract number 137726.

To date, four patients, including one pediatric patient, have received a total of six infusions in the Phase 1 clinical trial. Patient characteristic data was shared in the oral presentation at ASH, including documented HA-1 TCR T cell persistence in blood and bone marrow up to 18 months. In some patients, clear in vivo anti-leukemic activity was observed at the first dose level, including a subject with aggressive, highly refractory T-ALL and early post-HCT relapse. No significant toxicities attributed to the T cells have been observed, including no infusion reactions or evidence of cytokine release syndrome or graft versus host disease.

The Phase 1 clinical trial is currently recruiting adult and pediatric patients who have residual disease or relapsed leukemia or related conditions following HSCT. As part of the trial, transplant patients and prospective donors may be recruited to participate in the genetic screening portion to determine eligibility. More details are available on clinicaltrials.gov under the study ID number NCT03326921.

About TCR-Engineered T Cell Therapy

A key role of the immune system is to detect tumor antigens, engage T cells, and eradicate the tumor. However, the immune response to tumor antigens varies and is often insufficient to prevent tumor growth and relapse. An approach known as adoptive T cell therapy, using T cell receptors, or TCRs, can overcome some of the obstacles to establishing an effective immune response to fight off the target tumor. TCRs are molecules found on surface of T cells that can recognize tumor antigens that are degraded to small protein fragments inside tumor cells. Unlike CAR T cells that recognize only surface antigens, TCRs can recognize small protein fragments derived from intracellular and surface antigens offering a more diverse way to attack tumors. These small protein fragments show up on the tumor cell surface, with another protein called major histocompatibility complex (MHC), that are recognized by the TCRs and consequently signal the bodys immune system to respond to fight off and kill the tumor cells.

Tumor-specific TCRs can be identified and then engineered into T cells that recognize and attack various types of cancers, representing a novel approach to treating and potentially preventing disease.

Adoptive T cell therapy can be applied to tackling relapse of leukemia post hematopoietic stem cell transplant (HSCT) by targeting the antigens expressed only by the patients native cells, and not by the cells from the stem cell transplant donor. HA-1, a known minor histocompatibility antigen, is expressed predominantly or exclusively on hematopoietic cells, including leukemic cells. There is evidence that T cells specific for HA-1 can induce a potent and selective antileukemic effect. HA-1 TCR T cell therapy is a new investigational immunotherapy for the management of post transplantation leukemia relapse.

About Leukemia post HSCT Treatment and the Risk of Relapse

Leukemia, a cancer of the blood or bone marrow characterized by an abnormal proliferation of blood cells, is the tenth most common type of cancer in the U.S. with an estimated 60,140 new cases and 24,400 deaths in 2016. Leukemia arises from uncontrolled proliferation of a specific type of hematopoietic (blood) cell that is critical for a functional immune system. As a result, when patients are given very high doses of chemotherapy to eradicate leukemic cells, most normal cells are killed as well, necessitating a transplant of hematopoietic stem cells from a donor to reconstitute the patients bone marrow and circulating hematopoietic cells. In some cases, the transplanted T cells from the donor can also recognize and eliminate the hematopoietic cells, including leukemia, from the recipient, thus preventing relapse. This can be described as a graft versus leukemia effect. Other hematologic disorders related to leukemia, like myelodysplastic syndrome (MDS), can also be treated in this way.

While HSCT can be curative, it is estimated that 25-50 percent of HSCT recipients relapse; leukemia relapse remains the major cause of allogeneic HSCT failure, and the prognosis for patients with post-HCT relapse is poor. Relapse occurs following allogeneic HSCT in approximately one-third of patients with acute leukemia who undergo the procedure, and most patients subsequently die of their disease.

About HighPassBio

HighPassBio, an ElevateBio portfolio company, is working to advance a novel approach to treating hematological malignancies by leveraging T cell receptor (TCR)-engineered T cells, known as TCR T cells. The companys lead program is designed to treat or potentially prevent relapse of leukemia in patients who have undergone hematopoietic stem cell transplant (HSCT). The technology was born out of research conducted at Fred Hutchinson Cancer Research Center by world renowned expert, Dr. Marie Bleakley.

About ElevateBio

ElevateBio, LLC, is a Cambridge-based creator and operator of a portfolio of innovative cell and gene therapy companies. It begins with an environment where scientific inventors can transform their visions for cell and gene therapies into reality for patients with devastating and life-threatening diseases. Working with leading academic researchers, medical centers, and corporate partners, ElevateBios team of scientists, drug developers, and company builders are creating a portfolio of therapeutics companies that are changing the face of cell and gene therapy and regenerative medicine. Core to ElevateBios vision is BaseCamp, a centralized state-of-the-art innovation and manufacturing center, providing fully integrated capabilities, including basic and translational research, process development, clinical development, cGMP manufacturing, and regulatory affairs across multiple cell and gene therapy and regenerative medicine technology platforms. ElevateBio portfolio companies, as well as select strategic partners, are supported by ElevateBio BaseCamp in the advancement of novel cell and gene therapies.

ElevateBios investors include F2 Ventures, MPM Capital, EcoR1 Capital, Redmile Group, Samsara BioCapital, The Invus Group, Surveyor Capital (A Citadel company), EDBI, and Vertex Ventures.

ElevateBio is headquartered in Cambridge, Mass, with ElevateBio BaseCamp located in Waltham, Mass. For more information, please visit http://www.elevate.bio.

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ElevateBio's HighPassBio Presents on Novel T Cell Receptor Cell Therapy for Leukemia Relapse at 62nd Annual ASH Meeting - Business Wire

Bone Marrow Stem Cells Comments Off on ElevateBio’s HighPassBio Presents on Novel T Cell Receptor Cell Therapy for Leukemia Relapse at 62nd Annual ASH Meeting – Business Wire | December 13th, 2020

What started out as a journey to better understand regulatory T cells has now led to an intriguing approach with an investigational cell therapy designed to prevent the risk of graft-versus-host disease (GVHD) and to improve relapse-free survival rates in patients undergoing hematopoietic stem cell transplantation (HSCT).

Data of a phase 1/2 trial recently showed that the first-generation precision cell treatment Orca-T compared with a historical control of standard HSCT demonstrated faster neutrophil (median, 12 days vs 14 days; P < .0001) and platelet engraftment (median, 11 days vs 17 days; P < .0001), decreased incidence of grade 2 or higher GVHD at 100 days (10% vs 30%, P = .005) and chronic GVHD at 1 year (3% vs 46%, P = .0002).1,2

The 1-year GVHD-free and GVHD relapse-free survival (GRFS) rates were 75% with the use of Orca-T vs 31% with standard HSCT (P < .0001). The comparator cohort was derived from contemporaneous patients who had been treated at Stanford University with a conventional allograft.

Along with feasibility of the approach, the results also highlight how Orca-T demonstrates potent anti-leukemic activity in patients who have active disease at HSCT, which suggests that the decrease of GVHD does not impact graft-vs-leukemia (GvL).

That is the most exciting part about the Orca-T story; it is the ability to do this with precision, with speed, and to export it to other sites. The results are intriguing, and very supportive, said Robert Negrin, a professor of medicine (blood and marrow transplantation), and chief of the Division of Blood and Marrow Transplantation at Stanford University.

In an interview with OncLive, Negrin, who is senior author on the trial, shared the evolution of Orca-T as a novel approach to HSCT, highlighted his robust experience with using this cell therapy at Stanford University, and how Orca-T is a potential prevention method for GVHD.

OncLive: Please provide some background to this therapeutic approach. What is the mechanism of action? How is it effective in patients undergoing transplant?

Negrin: This whole idea came from mouse studies many, many years ago, where we identified GVHD as being a dysregulated immune reaction that just keeps going, and going, and going. Like you and I, when we react to something, we have a reactionlet's say, influenza. Our body responds, and then we stop reacting and you get better. With GVHD, what we noticed in using a bioluminescent animal model is that the alloreactive T cells just keep going, going, and going and are unrelenting in mice, just like in people. The problem is very similar and affects certain organs in a very similar way.

Therefore, we went about trying to understand the use of so-called regulatory cells. These are cells that everybody has that help control immune reactions. We just applied them in this clinical scenario, first in mice work done by Matthias Edinger, MD, when he was a postdoctoral fellow many years ago [and other researchers]. All of them were very actively involved in these studies, and showed, somewhat surprisingly, that the administration of regulatory T cells could control this dysregulated immune response that we called GVHD.

Probably more surprising was that, at least in the animal models, it also allowed for the benefits of transplant, namely, the graft-vs-tumor effect and better immune recovery. This was in large part because GVHD also impacts the immune repertoire and where the immunity is developed in the recipient.

All of this was very nice in mouse models and was very elegant. We did a lot of studies, published a number of nice papers, and thought this would be a great idea because it sort of solved, or at least addressed, the principal problems after bone marrow transplantationnamely, avoidance of GVHD yet retention of graft-versus-tumor effects and better immunity. A lot of times, people say, "Oh, that sounds good in mice, but, that's too good to be true." And, theyll ask, "Will that all work in people?"

Where did the biggest challenges lie in this approach?

The big challenge came about to try to apply this to patients. We also have one other interesting point that is relevant. If we gave the regulatory T cells first, before the so-called conventional CD4+/CD8+ cells, that allowed for a lower dose of regulatory T cells. This is because a big challenge is the paucity of these cells; you and I don't have that many.

Then, the other big challenge was the technical ability to isolate in cells. What we do in mice is cell sorting, which is a standard technology. But, that was not developed in people because we're bigthere are a lot of cells, and cell sorting is rather slow, and it's very specific. To get enough cells takes a really long time. It's somewhat of a heroic thing to do in people, to get the adequate amount ourselves; of course, we don't really know what this proper cell dose is.

However, what we thought we learned was that the ratio of conventional to regulatory T cells was the key component. Also, if you give the regulatory T cells first, you can get fewer numbers. Those are things you can do in transplant. You can get the cell from the donor, and you can give cells in a certain sequence; all of those things are very doable. It seemed like an attractive thing to do in patients.

Then, the question was: Does it work? There are 3 groups that have really pioneered this work. The first study came from the University of Perugia in Italy. They did this in haploidentical transplantation; you cannot avoid immunosuppression in haploidentical transplants. They were able to show in several nice papers that you could do this strategy, and seemingly, get away with low risk of GVHD, and also low relapse. This is because the other issue is: how do you measure the graft-vs-tumor effect? There is no assay, and we have no test; you have to wait and see who relapses and who doesn't. Therefore, they also showed rather convincingly that you could reduce GVHD risk, yet, there was a very low risk of relapse in their high-risk patient population. Those were very important [data].

Another study from the University of Minnesota did this with umbilical cord blood. They expanded the regulatory T cells from a third cord blood unit, which is somewhat heroicit is another level of complexity to isolate the cells and then expand them. We did this in matched donorseither matched siblings or matched unrelated donors. We published a paper in JCI Insight several years ago showing the initial results, and they look quite favorable.

Therefore, what I think is most exciting about what Orca Bio has done is they are developing technology to isolate the cells more quickly, to be able to do this on a clinical scale, with precision, and with speed. Also, [they are developing the technology] to be able to distribute it to anybody, because the criticism of all these studies is that, "Oh, that's nice. But, this is a single-institution study. Is this really true? Can this be exported? Could this be something that [an organization] other than these [individual] centers are really focused in this area and have developed these technologies could really do? Orca Bio is developing the technology, and improving the technology, because it's still very cumbersome, and exporting the technology so that you could do this, theoretically, at any center.

That's what I think is most exciting about the Orca Bio abstract; it is demonstrating that this can be done. It certainly opens the door to prevention of GVHD. As we move into an era of using cell-based therapeutics, now, this opens up many other possibilities, because you use these regulatory cells and autoimmune disorders and organ transplant tolerance. There are many other cell types that have potential clinical utility, but getting them, and purifying them, is a big challenge. There are many other possibilities that one could think of.

Obviously, more time will be required to follow these patients, but they certainly are supportive of the idea that you can improve overall outcomes using this strategy. That's what we hope to be able to demonstrate further.

Please focus on the scalability of this approach. Through these types of collaborations, how do you see Orca-T potentially moving through the FDA pipeline?

In academia, we don't develop drugs. It's too much, we don't have the resources, we don't have the capability, and we don't have the monitoring capability that is required for multi-institutional studies. Where these commercial partners come in is, they can raise money for interesting concepts, which Orca Bio has done, and they can export this to other centers, and that's critically important.

As we've seen in the CAR T-cell [therapy] world, that can be a quite successful commercial business. Also going through the process of an FDA approvalwhich Orca Bio is moving along in that processand getting the right designations is critically important to commercial entities. In academia, it's important to us, but that's just not our focus.

We don't have the resources around, the people and the expertise to really drive things through that process. We're good at developing the studies and getting FDA approvals, and [investigational new drug applications], but not really [good at] developing drugs as a commercial entity. This collaboration is key to doing this successfully; for example, at Orca Bio, [they have] technology to separate cells more efficiently and effectively. They also have the resources to do a multi-institutional clinical trial, and the expertise to move something through and present it to the FDA. Those are key components.

Could you expand on the study and respective data from this phase 1/2 trial?

Here at Stanford Cancer Institute, we did find in our patients that giving low doses of immunosuppressive medications with a single agent seem to improve the outcomes, and it's remarkable how well these patients have gone through the transplant. It's a little bit hard to appreciate an abstract until you take care of these patients, and many of them just sort of move to the transplant with relatively little challenges. We have not seen greater risks of things like infection [or] disease recurrence; those are obviously things that will be followed.

When we look at the 1-year GVHD relapse-free survival rate, which is an endpoint that most transplant studies would agree is the most important end point, the overall outcomes are much more favorable compared with a historical control group.

The data are very encouraging, and the overall outcomes look very strong in a reasonable number of patients now. We think it's important for the community to hear about it, and to get it on everybody's radar, and be excited about trying to move this forward as a more standard therapy. This is still a clinical trial, so it's not, it's not part of any standard therapies yet. We are using this quite regularly and have been very encouraged by the ease of which patients go through the transplant. It's still an allogeneic transplant; there still are many challenges there. However, these patients seem to be doing quite well, we're very encouraged, and so we keep going.

How does this approach impact patient outcomes as it relates to quality of life (QoL)?

The hard end points of 1-year relapse-free survival is obviously the most important to patients. However, going through an allogeneic transplant is obviously an incredibly difficult thing. Fortunately, I've only seen it [from] the doctor side, not [as a] patient.

However, I've seen many, many patients, and the quality of their life as they go through this experience is very important to all of us. As we saw these patients go through these studies, we felt like we were capturing something that was really important, and that is the ease [at which] many patients went through this experience, which just seemed different. It's hard to capture that.

It's really important for patients to speak and, and the way patients speak is in different ways. One way is through the QoL measures that they answer. This is [what they find] important, this is what they experiencednot what we say is happening. That's really important to hear that voice too. Those are data we're trying to collect. It's not so easy, because going through a bone marrow transplant is a poor QoL for everybody. But, by just to trying to capture this, [Orca-T seems] better than what we what we thought.

How has this changed the mindset of cell-based approaches in the community?

What has changed is the belief in the concept of cell-based therapies. A lot of these things are somewhat fanciful. It is also important to show that we can translate from an animal model [to a human]. There is a lot of criticism of animal modeling, because people say, "Well, it's nice for animal models, but it doesn't really translate into the clinic." Actually, my view is that because we don't actually follow the animal models, there are many compromises one needs to make. When you translate studies from animals to humans, there are many differences, and it's really important to try to follow them as carefully as you can within the limitations of what is possible. We were very engaged in that and tried to follow as carefully as we could. To me, that is very encouragingthat you can study things in animals that generate new concepts and be able to translate that into a clinical trial.

Obviously, with all of the caveats of an early-phase clinical trial, more time needs to pass, more patients to be treated, and you need to export [the treatment] to other centers. That's a really important point, because there are many things that get lost because, "it's too complicated. It's too expensive. People can't do it." I don't think anybody can do high-speed cell sorting, as a clinical project in a standard or standard cell-processing laboratory. It's above the level of what most processing laboratories can do.

References

Excerpt from:
Negrin Shines Light on the Orca-T Story in GVHD - OncLive

Bone Marrow Stem Cells Comments Off on Negrin Shines Light on the Orca-T Story in GVHD – OncLive | December 13th, 2020

In the first study, researchers used CRISPR/Cas9 to treat two inherited blood disorders, beta thalassemia and sickle cell disease (SCD). The trial, which demonstrated remarkable improvements in all participants, is the first time this revolutionary approach has been used successfully in these patient populations.

Given that the only FDA-approved cure for sickle cell disease, a bone marrow transplant, is not widely accessible, having another curative option would be life-changing for a large number of the sickle cell disease population, said press briefing moderator, Dr Catherine Bollard, of Childrens National Research Institute and George Washington University. While longer follow-up data are needed, this study is extremely exciting for the field.

Investigators reported interim safety and efficacy data from 10 patients who received an investigational gene-editing based therapy, CTX001. The trials are the first to test a CRISPR-Cas9 gene editing therapy in humans for a genetic disease, the researchers reported.

Sickle cell disease (SCD) can cause a variety of health problems including episodes of severe pain, called vaso-occlusive crises, as well as organ damage and strokes, while patients with transfusion-dependent thalassemia (TDT) are dependent on blood transfusions from early childhood.The only available cure for both diseases is a bone marrow transplant from a closely related donor, an option that is not available for the vast majority of patients because of difficulty locating matched donors, the cost, and the risk of complications.

In the studies, the researchers goal is to functionally cure the blood disorders using CRISPR/Cas9 gene-editing by increasing the production of fetal hemoglobin, which produces normal, healthy red blood cells as opposed to the misshapen cells produced by faulty hemoglobin in the bodies of individuals with the disorders.

The clinical trials involve collecting stem cells from the patients. Researchers edit the stem cells using CRISPR-Cas9 and infuse the gene-modified cells into the patients. Patients remain in the hospital for approximately one month following the infusion.

Prior to receiving their modified cells, the seven patients with beta thalassemia required blood transfusions around every three to four weeks and the three patients with SCD suffered episodes of severe pain roughly every other month.

All the individuals with beta thalassemia have been transfusion independent since receiving the treatment, a period ranging between two and 18 months. Similarly, none of the individuals with SCD have experienced vaso-occlusive crises since CTX001 infusion.

All patients showed a substantial and sustained increase in the production of fetal hemoglobin.

Researchers report that the safety of CTX001 infusion was generally consistent with the chemotherapy regimen received prior to cell infusion.

Four serious adverse events (SAEs) related or possibly related to CTX001 were reported in one patient with TDT: headache, haemophagocytic lymphohistiocytosis (HLH), acute respiratory distress syndrome, and idiopathic pneumonia syndrome. All four of these SAEs occurred in the context of HLH and were either resolved or clinically improving at the time of this analysis. No other CTX001-related SAEs were reported in the other patients with TDT or in any patients with SCD, said the investigators.

Haydar Frangoul, MD, Medical Director of Pediatric Hematology and Oncology at Sarah Cannon Research Institute, HCA Healthcares TriStar Centennial Medical Center, said:What we have been able to do through this study is a tremendous achievement. By gene editing the patients own stem cells we may have the potential to make this therapy an option for many patients facing these blood diseases.

Because of the precise way CRISPR-Cas9 gene editing works, Dr Frangoul suggested the technique could potentially cure or ameliorate a variety of diseases that have genetic origins.

The trial was sponsored by CRISPR Therapeutics and Vertex Pharmaceuticals.

The second two studies indicate new opportunities to reach a broader patient population with chimeric antigen receptor T-cell (CAR-T) therapy, which has been shown to be effective in some blood cancers but does not work in all patients.

One of the new studies offers an explanation as to why some patients do not respond to CD19-CAR-T therapy and suggests a way to overcome this resistance. The other study suggests CD19-CAR-T may be a viable option for some patients with high-risk non-Hodgkin lymphoma who have not responded to standard treatments.

Getting more data on CD19-CAR-T therapy in the high-risk non-Hodgkin lymphoma population is very important, said Dr Bollard. We know that CD19-CAR-T therapy does not work for some patients, so these studies underscore the need to better understand the immune evasion mechanisms T cells might be susceptible to and not just focus on their role as a vehicle for the CAR. Doing so may improve our capacity to administer effective T-cell immunotherapies.

Read the original:
ASH virtual event hears about CRISPR and CAR-T based approaches to hard-to-treat blood disorders and cancers - BioPharma-Reporter.com

Bone Marrow Stem Cells Comments Off on ASH virtual event hears about CRISPR and CAR-T based approaches to hard-to-treat blood disorders and cancers – BioPharma-Reporter.com | December 13th, 2020