Purpose: To evaluate the feasibility and efficacy of rituximab with short-duration chemotherapy in the first-line treatment of patients with follicular non-Hodgkin's lymphoma (NHL).
Patients And Methods: Patients with previously untreated stage II-IV follicular NHL, grade 1 or 2, were eligible for this multicenter phase II trial. All patients received four weekly doses of rituximab (375 mg/m(2) intravenous), followed by three courses of combination chemotherapy (either cyclophosphamide, doxorubicin, vincristine, and prednisone [CHOP], or cyclophosphamide, vincristine, and prednisone [CVP]) plus rituximab. Patients were evaluated for response after completing treatment, and were then followed up at 3-month intervals.
Results: Between January 2000 and July 2001, 86 patients were treated. Eight-two patients (95%) completed treatment; no patient was withdrawn due to toxicity. The overall response rate was 93%, with 55% complete responses. After a median follow-up of 42 months, the 3- and 4-year actuarial progression-free survivals were 71% and 62%, respectively. Five patients (6%) died from lymphoma; the overall actuarial survival at 3 years was 95%. Grade 3/4 leukopenia occurred in 53% of patients, but only six patients (7%) had neutropenia or fever. Grade 3/4 nonhematologic toxicities were uncommon.
Conclusion: Rituximab plus short-course chemotherapy is well tolerated as first-line treatment for patients with follicular NHL. The overall and complete response rates are similar to those reported with chemotherapy/rituximab combinations of longer duration. The actuarial progression-free survival of 62% at 4 years is encouraging, but further follow-up is necessary. Rituximab plus short-course chemotherapy may prove to be as effective as longer-duration chemotherapy and currently provides an attractive option for first-line treatment of elderly patients and others who tolerate chemotherapy poorly.
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