Phase II studies of dianhydrogalactitol-based combination chemotherapy for recurrent brain tumors

The drug combinations of dianhydrogalactitol and VP-16 and dianhydrogalactitol, VP-16, and triazinate were used in patients with primary brain tumors, principally astrocytoma, recurrent following cranial irradiation. Tumor regressions were noted in 40% of patients treated with the 2-drug regimen and in 33% of patients treated with the 3-drug regimens. Regression were noted in all grades of tumor. Poor performance score on the patients' part did not seem to effect regression rates. Myelosuppression was the principal toxicity encountered. Dianhydrogalactitol-based combination chemotherapy seems as active as nitrosourea therapy and presents an alternative to nitrosourea therapy.