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Treatment of adult patients with acute lymphocytic leukemia in relapse.

Thirty-eight patients with a diagnosis of relapsed acute lymphocytic leukemia were accrued to a treatment program of reinduction therapy by the Eastern Cooperative Oncology Group (ECOG). A combination of mitoxantrone, etoposide (VP-16), and high-dose cytarabine (ARA-C) were administered over a five day period. Thirty-four patients were eligible for follow-up subsequent to treatment. Twenty-seven patients were in first relapse and seven were in second relapse. Fifteen of the thirty-four patients treated were given two cycles of induction chemotherapy. The complete remission (CR) rate for the entire group treated was 17%. The median duration of the CR was 2.4 months and the estimated median survival for first relapse patients was 4.5 months and 5.0 months for second relapse patient group. There were five deaths attributable to toxicity associated with the chemotherapy. The study emphasizes the difficulty in achieving durable remissions in adult patients with relapsed ALL.