Gamma-aminobutyric acid transaminase genetic polymorphism is a candidate locus for responsiveness to opioid analgesics in patients with cancer pain: An exploratory study.
Yokoshima Y, Sumitani M, Nishizawa D, Nagashima M, Ikeda K, Kato R, Hozumi J, Abe H, Azuma K, Tsuchida R, et al. Neuropsychopharmacol Rep. 2018 Dec; 38(4):175-181. Epub 2018 Sep 14.