Bone marrow transplant – NHS Choices

By Sykes24Tracey

Introduction

A bone marrow transplant, alsoknown as a haemopoietic stem cell transplant, replaces damaged bone marrow with healthy bone marrow stem cells.

Bone marrow is aspongytissue found in the hollow centres of some bones. It contains specialist stem cells, which produce the body's blood cells.

Stem cells in bone marrow produce three important types of blood cells:

Bone marrow transplants are often needed to treat conditions thatdamage bone marrow. If bone marrow is damaged, it is no longer able to produce normal blood cells. The new stem cells take over blood cellproduction.

Conditions that bone marrow transplants are used to treat include:

Read more about why a bone marrow transplantis needed.

A bone marrow transplant involves taking healthy stem cells from the bone marrow of one person and transferring them to the bone marrow of another person.

In some cases, it may be possible to take the bone marrow from your own body. This is known as an autologous transplantation. Before it is returned, the bone marrow is cleared of any damaged or diseased cells.

A bone marrowtransplant has five stages. These are:

Having a bone marrow transplant can be an intensive and challenging experience. Many people take up to a year to fully recover from the procedure.

Read more about what happens during a bone marrow transplant.

Bone marrow transplants are usually only recommended if:

Read more about who can have a bone marrow transplant.

Bone marrow transplants arecomplicated procedures with significant risks.

In some cases, the transplanted cells (graft cells) recognise the recipient's cells as "foreign"and try to attack them. This is known as graft versus host disease (GvHD).

The risk of infectionis alsoincreased because your immune system is weakened when you're conditioned (prepared) for the transplant.

Read more about the risks of having a bone marrow transplant.

It's nowpossible to harvest stem cells from sources other than bone marrow.

Peripheral blood stem cell donation involves injectinga medicine into the donor's blood thatcauses the stem cells to moveout of the bone marrow and into the bloodstream where theycan be harvested (collected).

The advantage of this type of stem cell donation is that the donor doesn't needa general anaesthetic.

Stem cells can also be collectedfrom the placenta and umbilical cord of a newborn baby and stored in a laboratory until they're needed.

Cord blood stem cells are very usefulbecause they don't need to be as closely matched as bone marrow or peripheral blood stem cells for a successful outcome.

Find out more about theNHS Cord Blood Bank(external link).

Page last reviewed: 18/02/2014

Next review due: 18/02/2016

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Bone marrow transplant - NHS Choices

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