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Mini-BMT: Non-Hodgkin's Lymphoma Cure?

83% in Complete Remission 5 to 9 Years After Mini-BMT for Follicular Lymphoma
By
WebMD Health News
Reviewed by Louise Chang, MD

Dec. 10, 2007 -- A procedure called a mini-BMT cured non-Hodgkin's lymphoma in 83% of patients in a small study, University of Texas M.D. Anderson Cancer Center researchers report.

Experts prefer to call the treatment "non-ablative bone marrow transplant." Before a normal BMT, patients get high-dose chemotherapy that kills off all the blood cells in the bone marrow. Mini-BMT uses just enough chemotherapy to create room for the transplant. The transplanted stem cells then partner with existing bone marrow cells to fight cancer.

The patients in the study all suffered relapses after their initial treatments for follicular lymphoma, the most common form of the white-blood-cell cancer called non-Hodgkin's lymphoma.

Five to nine years after undergoing mini-BMT, four out of five patients were still in complete remission of their cancer. The two patients who relapsed underwent further treatment and are both now in sustained remission.

"I truly believe this is curing patients," Issa Khouri, MD, M.D. Anderson professor of stem cell transplantation, tells WebMD. "It is the only treatment out there where the 'cure' word can be used."

That's not an overstatement, says Gordon Phillips, MD, director of the blood and marrow transplant program at the University of Rochester, N.Y.

"It is a reasonable statement, although it remains a little bit controversial," Phillips tells WebMD.

Phillips notes that the cure rate seen in the study likely reflects that the patients were highly selected -- all, for example, had chemotherapy-sensitive tumors -- and that follicular lymphoma may be more amenable to mini-BMT treatment than other non-Hodgkin's lymphomas.

Even so, Phillips says, other cancer centers are getting roughly similar results with the technique. He notes that Kouri's colleague, Richard Champlin, MD, is one of the pioneers of the mini-BMT technique.

Mini-BMT

The treatment calls for two or more rounds of combination chemotherapy at levels that might be used in patients not getting transplants. The regimen includes a new biological cancer treatment called Rituxan. It's followed by an infusion of bone marrow cells from matched, usually unrelated donors.

Immunity-suppressing treatment is given to keep the body from rejecting the transplants. The idea is to get the new cells to attack the tumor. The problem is to avoid having the new cells attack the body -- a phenomenon known as graft versus host disease or GVHD.

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