Half-Match Bone Marrow Transplant Procedure Shows Promising Results

by Tanya Thomas on  September 05, 2011 at 10:58 PM Organ Donation News
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A clinical trial conducted at the Kimmel Cancer Center at Jefferson testing its unique, two-step half-match procedure has produced some promising results.

The probability of overall survival was 45 percent in all patients after three years and 75 percent in patients who were in remission at the time of the transplant.

Neal Flomenberg, M.D., Chair of the Department of Medical Oncology at Thomas Jefferson University Hospital, Dolores Grosso, DNP, Co-Principal Investigator and lead author of the article, and colleagues discuss the results of 27 patients treated on this phase I/II trial who had diagnoses that included leukaemia, lymphoma and myelodysplasia.

The patients received their transplant in two steps. First, after receiving radiation therapy to further treat their disease, the patients were given a specified dose of T cells (a type of immune cell that fights infection) from their half-matched family donor. The donors were parents, siblings or children of the patient.

The patients next received the drug cyclophosphamide to help the newly infused donor T cells to be more tolerant to the patient's body.

The second step of the transplant occurred when the patients received a dose of their donors' stem cells to help their blood counts return to normal and further strengthen their new immune system.

Dr. Flomenberg and his team found that after a follow-up of 28-56 months, overall survival for the patients after one year was 54 percent and 48 percent at three years.

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