Toxicity of the FOLFOX-6 regimen, with or without 5-fluorouracil bolus, in metastatic colorectal cancer.

Objective: Standard treatment of metastatic colorectal cancer includes oxaliplatin and 5-fluorouracil in continuous infusion. Although FOLFOX-6 is the reference combination, it is aggressive and has high toxicity. Variants such as the TTD regimen, which does not include folinic acid or 5-fluorouracil bolus, are used.