Gene expression in post-mortem human prefrontal cortex samples from BrainCloud, as stratified by rs9829896 genotype. Gene expression profiles for (A) KAT2B, (B) CREBBP, and (C) OPRM1 are presented separately for 113 African Americans (AA) and 110 European Americans (denoted CAUC). Genotypes are designated as ‘1’ for the major allele homozygotes (AA), ‘2’ for heterozygotes, and ‘3’ for minor allele homozygotes (CC).