To investigate the genotype-phenotype correlation of the two schizophrenia-associated SNPs (rs878567 in HTR1A and rs1800883 in HTR5A) with executive function in patients and controls, we conducted multivariate analyses of PE, NPE, TE and TCFC for each genotype group of the two associated SNPs in the replication dataset. Here, HTR5A is linked to schizophrenia.