Results of a salvage regimen in refractory or relapsed non-Hodgkin's lymphoma.

After therapy with adriamycin-containing regimens, relapsed or refractory non-Hodgkin's lymphomas (NHL) have a very poor prognosis. Although high dose chemotherapies are widely employed, their related costs and the controversial results achieved justify the development of new second-line conventional therapies. Forty-three patients with relapsed or refractory NHL were consequently treated with an outpatient polychemotherapy schedule including ifosfamide, mitoxantrone and etoposide on day 1, and vindesine, cisplatinum and cytosine arabinoside on day 15. The courses were repeated on day 29. All of the patients were pretreated with at least one chemotherapy regimen. Twenty-two patients had diffuse large cell lymphoma, 8 had bone marrow involvement, and 17 altered baseline lactate dehydrogenase (LDH) values. After a median number of 4 cycles (range 2-8), we registered 20 complete (46%) and 4 partial remissions, for an overall remission rate of 56% (95% confidence interval: 40-71%). All of the responses occurred in patients who had achieved at least partial remission during first-line therapy. Four patients are long term responders after 31, 39, 49 and 52 months, and are possibly cured. Univariate analysis of prognostic factors showed that baseline LDH values and response to front-line therapy significantly affected both time to disease progression and survival, whereas the number of previous treatments given, significantly affected only the time to progression. Therapy was administered in an out-patient setting and no life-threatening toxicity was observed. Side effects consisted of nausea/vomiting, alopecia and reversible myelosuppression. The results suggest that different treatment strategies for relapsed and refractory patients should be considered on the basis of prognostic factors.(ABSTRACT TRUNCATED AT 250 WORDS)