Piperazinedione in patients with advanced malignant melanoma: a Southwest Oncology Group study.

Piperazinedione was administered in doses of 9 or 12 mg/m2 by iv infusion every 3 weeks in 28 patients with previously treated malignant melanoma. Of the 25 evaluable patients, 72% had drug-induced toxicity: 40% had leukopenia, 56% had thrombocytopenia, 40% had anemia, and 16% had nausea and vomiting. None of these patients had partial remission, two had stable disease, and the remaining 23 had definite progression of their disease in spite of adequate trial with this agent.