ABCB1 and Insulin resistance: The current study supports prior reports that did not find associations between ABCB1 1236C>T, 2677T>A, and 3435C>T polymorphisms with the risperidone response (Nuntamool et al., 2017), with metabolic abnormality/insulin resistance (Sukasem et al., 2018), or with steady-state plasma concentrations of risperidone or 9-hydroxyrisperidone (Yasui-Furukori et al., 2004).