Indeed, single nucleotide polymorphisms (SNPs) within non-coding region of GPM6A have been linked to schizophrenia (Boks et al., 2008; Schizophrenia Working Group of the Psychiatric Genomics Consortium, 2014; Li et al., 2017; Pardiñas et al., 2018; Lam et al., 2019), and one variant for both neuroticism (Nagel et al., 2018) and bipolar disorder (Greenwood et al., 2012). Here, GPM6A is linked to schizophrenia.