Pharmacogenetic association with adverse drug reactions to azathioprine immunosuppressive therapy following liver transplantation
David P. Breen, Anthony M. Marinaki, Monica Arenas, Peter C. Hayes – 22 June 2005 – Azathioprine (AZA) is a thiopurine prodrug commonly used in triple‐immunosuppressive therapy following liver transplantation. Approximately 1 in 10 patients suffers side effects in response to the drug, the most problematic being bone marrow toxicity. There is evidence that polymorphisms in the genes encoding thiopurine methyltransferase (TPMT) and inosine triphosphate pyrophosphatase (ITPase) predict adverse drug reactions to AZA therapy.