Phase I study of irinotecan for previously treated lung cancer patients with the UGT1A1*28 or *6 polymorphism: Results of the Lung Oncology Group in Kyushu (LOGIK1004A)
Various polymorphisms have been detected in the UDP-glucuronosyltransferase 1A ( UGT1A ) gene, and UGT1A1*28 and UGT1A1*6 have important effects on the pharmacokinetics of irinotecan and the risk of severe toxicities during irinotecan therapy. This study was conducted to determine the maximum tolerated dose (MTD) of irinotecan chemotherapy according to the UGT1A1 genotype in previously treated lung cancer patients with the UGT1A1*28 or UGT1A1*6 polymorphism.