Combination chemotherapy for advanced colorectal cancer with triazinate, ICRF-159, 5-FU, and methyl-CCNU.

Twenty-four patients with advanced metastatic colorectal cancer with measurable sites of disease were treated with a combination of 5-FU, methyl-CCNU, ICRF-159, and triazinate. Only two had objective regression of disease. Two patients died of complications from drug-induced myelosuppression. Toxic effects were moderate in the remaining patients. Attempts to escalate doses were limited by myelosuppression. The regimen used has no advantage over 5-FU alone. It is unlikely that triazinate and ICRF-159 will add substantially to the efficacy of chemotherapy for colorectal cancer.