High-dose chemotherapy and autologous bone marrow transplantation compared with MACOP-B in aggressive B-cell lymphoma

Background We compared a regimen of six chemotherapeutic agents administered sequentially at high doses, followed by myeloablative treatment and bone marrow transplantation, with a regimen of methotrexate, doxorubicin, cyclophosphamide, vincristine, prednisone, and bleomycin (MACOP-B) as initial or salvage treatment for adults with diffuse large-cell lymphoma. Methods Ninety-eight eligible patients with diffuse large-cell lymphoma of the B-cell type were randomly assigned to receive either MACOP-B (50 patients) or high-dose sequential therapy (48 patients). If the assigned treatment failed, the study design allowed patients to cross over to the other treatment group. Results After a median follow-up of 55 months, the patients given high-dose sequential therapy, as compared with those treated with MACOP-B, had significantly higher rates of complete response (96 percent vs. 70 percent, P=0.001), freedom from disease progression (84 percent vs. 49 percent, P<0.001), freedom from relapse (88 percent vs. 70 percent, P=0.055), and event-free survival (76 percent vs. 49 percent, P=0.004). The difference in overall survival at seven years, which also favored the group assigned to high-dose sequential therapy, was marginally significant (81 percent vs. 55 percent, P=0.09). Conclusions High-dose sequential therapy is superior to standard-dose MACOP-B for patients with diffuse diffuse large-cell lymphoma of the B-cell type. (C) 1997, Massachusetts Medical Society.