Vol 4-2 Mini Review

Predictive Value of UGT1A1 Polymorphisms in Irinotecan-Induced Toxicity and Therapeutic Efficacy in Colorectal Cancer Patients

Qianqian Yu1, Zhihuan Li2, Xiaoqi Nie1, Lu Wang1, Chen Gong1, Bo Liu1, Xin Liao3, Ben Zhao1, Qianxia Li1, Mingsheng Zhang1, Hong Qiu1, Xianglin Yuan1*

1Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China.

2Dongguan Enlife Stem Cell Biotechnology Institute, Dongguan 523000, Guangdong, China

3Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China

Irinotecan-based chemotherapy is a fundamental cytotoxic regimen for advanced colorectal cancer. The disposition of irinotecan is known to vary in a fashion partially depending on genetic variations in the drug metabolic pathways. UDP-glucuronosyltransferase (UGT)1A1 is a predominant enzyme that converts the active metabolite of irinotecan to the inactive form via a glucuronidation process. Several UGT1A1 polymorphisms are linked to SN-38 glucuronidation and irinotecan-related adverse events, while the predictive role of UGT1A1 polymorphisms regarding therapeutic outcome is controversial. In this review, we will evaluate the impact of UGT1A1 genotypes on irinotecan-induced toxicity and therapeutic efficacy in colorectal cancer patients receiving irinotecan-based treatment.

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