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Antibodies
Antibodies


Definition:

Graft-versus-host disease (GVHD) is a complication that can occur after a bone marrow transplant in which the newly transplanted material attacks the transplant recipient's body.

See also: Transplant rejection



Alternative Names:

GVHD



Causes, incidence, and risk factors:

GVHD occurs in a bone marrow transplant involving a donor and a recipient. The bone marrow is the soft tissue inside bones that helps form blood cells, including white cells that are responsible for the immune response . Since only identical twins have identical tissue types, a donor's bone marrow is normally a close, but not perfect, match to the recipient's tissues. See: Histocompatibility antigen test

The differences between the donor's marrow and recipient's tissues often cause T cells (a type of white blood cells) from the donor's marrow to recognize the recipient's body tissues as foreign. When this happens, the newly transplanted bone marrow attacks the transplant recipient's body.

Acute GVHD starts within the first 3 months after transplant. Chronic GVHD starts more than 3 months after transplant, and can last for 3 years or longer.

Rates of GVHD vary from between 30-40% among related donors and recipients to 60-80% between unrelated donors and recipients. The greater the mismatch between donor and recipient, the greater the risk of GVHD. After a bone marrow transplant, the recipient usually takes drugs that suppress the immune system, which helps reduce the chances (or severity) of GVHD.



Symptoms:

Symptoms in both acute and chronic GVHD range from mild to severe.

Common acute symptoms include:

Chronic symptoms may include:

In both acute and chronic GVHD, the patient is very vulnerable to infections.



Signs and tests:

The tests done usually depend on the symptoms, but may include:



Treatment:

The goal of treatment is to suppress the immune response without damaging the new marrow. Medicines commonly used include methotrexate and cyclosporine, either alone or in combination.

High-dose corticosteroids are the most effective treatment for acute GVHD. Antibodies to T cells are given to patients who do not respond to steroids.

Treatment of chronic GVHD includes prednisone (a steroid) with or without cyclosporine. Other treatments include mycophenolate mofetil (CellCept) and tacrolimus (Prograf).



Support Groups:



Expectations (prognosis):

How well a person does depends on the severity of the condition. Some cases of GVHD can lead to death.

Many cases, whether acute or chronic, can be treated successfully. Sometimes treatment of the condition can lead to severe complications.

Successful treatment of GVHD does not guarantee that the bone marrow transplant itself will succeed in treating the original disease.



Complications:
  • Cholestasis
  • Moderate-to-severe damage to the liver, lung, or digestive tract
  • Severe infection
  • Severe lung disease


Calling your health care provider:

If you have had a bone marrow transplant and are no longer in the transplant center, call your health care provider immediately if any unusual symptoms appear, including:

  • Diarrhea
  • Difficulty breathing
  • Skin rash
  • Stomach cramps
  • Yellowing of the skin or eyes (jaundice)


Prevention:

Before a transplant, your blood type and tissue type will be carefully matched with eligible donors. This matching will reduce the risk of GVHD. Whenever possible, donations from closely matched family members can further decrease the risk of this problem. Absolute prevention of GVHD is not possible - it is a risk with any bone marrow transplant.



References:

Hoffman R, Benz Jr. EJ, Shattil SJ, et al., eds. Hematology: Basic Principles and Practice. 4th ed. Philadelphia, Pa: Churchill Livingston; 2005:1783-92.

Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007: pp. 278-9.




Review Date: 7/11/2008
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; and James R. Mason, MD, Oncologist, Director, Blood and Marrow Transplantation Program and Stem Cell Processing Lab, Scripps Clinic, Torrey Pines, California. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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