VIPR2 and schizophrenia: Several clinical (Levinson et al., 2011; Vacic et al., 2011; Yuan et al., 2014; Li et al., 2016; Firouzabadi et al., 2017) and preclinical (Ago et al., 2015; Tian et al., 2019) studies have shown that high expression/overactivation of VIPR2 is linked to both schizophrenia and ASD.