RBM26 and schizophrenia: A GWAS of schizophrenia in Ashkenazi Jews31 found an association with SNP rs9545047 (risk allele A global frequency 0.73), adjacent to the RBM26 and NDFIP2 genes within the shared homozygous region, which was confirmed in the latest GWAS meta-analysis.5 This is the only SNP currently associated with schizophrenia on chromosome 13.