Patients with this genotype have increased risk of toxicity with fluorouracil
References
Agostini M, Pasetto LM, Pucciarelli S, Terrazzino S, Ambrosi A, Bedin C, Galdi F, Friso ML, Mescoli C, Urso E, Leon A, Lise M, Nitti D: Glutathione S-transferase P1 Ile105Val polymorphism is associated with haematological toxicity in elderly rectal cancer patients receiving preoperative chemoradiotherapy. Drugs Aging. 2008;25(6):531-9. [Article]