Uridine diphosphate glucuronosyl transferase 1 family polypeptide A1 gene (UGT1A1) polymorphisms are associated with toxicity and efficacy in irinotecan monotherapy for refractory pancreatic cancer. - Takahara N; Nakai Y; Isayama H; Sasaki T; Satoh Y; Takai D; Hamada T; Uchino R; Mizuno S; Miyabayashi K; Mohri D; Kawakubo K; et al. (Cancer chemotherapy and pharmacology, 2013)