SYNGAP1 and schizophrenia: Another top hit, rs3130008, for which the negative association between postnatal stress and accumbens volume was most pronounced for A‐allele carriers, mapped onto the SYNGAP1 gene, which plays a role in neuronal plasticity and has been implicated by previous GWAS studies in schizophrenia (Goes et al., 2015; Ikeda et al., 2019) and ASD (Autism Spectrum Disorders Working Group of The Psychiatric Genomics Consortium, 2017).