Concurrent modulation of 5-fluorouracil with methotrexate and L-leucovorin: an effective and moderately toxic regimen for the treatment of advanced colorectal carcinoma. A multicenter phase II study of the Southern Italy Cooperative Oncology Group.


AIMS AND BACKGROUND Methotrexate (MTX) and leucovorin (LV) can enhance the cytotoxicity of 5-fluorouracil (5FU) by modifying its metabolic pathway inside target cells. Some preclinical studies and clinical trials have suggested that the concurrent or sequential double modulation of 5FU by means of MTX and LV may give a higher activity than single… (More)


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