作者: Benjamin Solomon , Paul A Bunn Jr
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摘要: Pemetrexed is a new generation antifolate anticancer agent that inhibits several folate-dependent enzymes required for production of DNA and RNA intermediates. Early studies showed significant hematologic nonhematologic toxicities with this agent. However it was found many these related to functional folate status could be markedly reduced through routine supplementation folic acid vitamin B(12), without adversely affecting efficacy. Phase III pemetrexed have established clinical role drug as single in the second-line treatment non-small cell lung cancer combination cisplatin frontline unresectable malignant pleural mesothelioma. Clinical trials alone or other chemotherapeutic agents shown considerable activity tumor types including colorectal, pancreatic breast cancer, urothelial tumors.