| Literature DB >> 26830078 |
Chalirmporn Atasilp1, Pichai Chansriwong2, Ekapob Sirachainan2, Thanyanan Reungwetwattana2, Montri Chamnanphon1, Apichaya Puangpetch1, Sansanee Wongwaisayawan3, Chonlaphat Sukasem4.
Abstract
UDP-glucuronosyltransferase1A1 (UGT1A1) polymorphisms have been related with irinotecan toxicity. The purpose of this study was to determine the associations between UGT1A1(*)28 and (*)6 polymorphisms and irinotecan toxicity in Thai patients with metastatic colorectal cancer. 44 metastatic colorectal cancer patients received irinotecan-based chemotherapy. Hematologic toxicities were determined in the first and second cycles of treatment. The genotypes of UGT1A1(*)28 and (*)6 were analyzed by pyrosequencing technique. The frequencies of genetic testing for UGT1A1(*)28 and (*)6 polymorphisms were 22.8% (TA6/TA7; 20.5%, TA7/TA7; 2.3%) and 15.9% (GA), respectively. No patients had the homozygous UGT1A1(*)6 (AA). Neither UGT1A1(*)28 nor UGT1A1(*)6 polymorphisms were significantly associated with severe hematologic toxicities. However, analysis of UGT1A1(*)28 and (*)6 in combination revealed an association with severe neutropenia in the first and second cycles (P = 0.044, P = 0.017, respectively). Both UGT1A1(*)28 and (*)6 polymorphisms may have an increased risk of irinotecan-induced neutropenia in Thai colorectal cancer patients.Entities:
Keywords: Colorectal cancer; Irinotecan; Neutropenia; UGT1A1(*)28; UGT1A1(*)6
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Year: 2015 PMID: 26830078 DOI: 10.1016/j.dmpk.2015.12.004
Source DB: PubMed Journal: Drug Metab Pharmacokinet ISSN: 1347-4367 Impact factor: 3.614