Treatment of patients with relapsed and resistant non-Hodgkin's lymphoma using total body irradiation, etoposide, and cyclophosphamide and autologous bone marrow transplantation.

PURPOSE: Patients with non-Hodgkin's lymphoma (NHL) who do not achieve a complete response (CR) after induction chemotherapy or who relapse after achieving a CR are rarely cured of their disease by the usual salvage therapy. Success of high-dose cytotoxic therapy with an autologous bone marrow transplant (AuBMT) is limited. We describe the results of a prospective single-institution study using a new conditioning regimen for patients with relapsed or resistant NHL who underwent AuBMT. PATIENTS AND METHODS: Forty-four patients were reinduced with cytotoxic therapy and then evaluated for response. All patients received the conditioning regimen of hyperfractionated total body irradiation (TBI), etoposide (VP-16), and cyclophosphamide (CTX) followed by autologous bone marrow reinfusion. RESULTS: The disease-free survival (DFS) rate was 57% with a median follow-up of 42+ months. The only variable significantly associated with DFS was the patient's remission status at AuBMT. Patients who underwent AuBMT in CR had a DFS of 80%, whereas patients who underwent AuBMT in partial response (PR) or with progressive disease (PD) had a DFS of 60% and 11%, respectively (P = .002). The major toxicity was hemorrhage at the site of bulky disease, especially in patients with residual mediastinal and/or pulmonary disease. CONCLUSION: Planned reinduction cytotoxic therapy followed by TBI, VP-16, and CTX with AuBMT is an effective treatment for patients with relapsed and resistant NHL.