GSK3B and schizophrenia: However, a case-control study examined GSK3β polymorphisms of the GSK gene SNPs rs7624540, rs4072520, and rs6779828 in patients with schizophrenia compared to healthy controls and showed a genotypic association between these SNPs and schizophrenia, suggesting that that this gene might be involved in the risk for schizophrenia [254].