(a) Enrichment of CNS SNPs (comprising 18.8% of all SNPs) in 18 traits from three categories: psychiatric disorders or CNS related disorder (red), immune system related disorders (blue), and body somatic features (black). For each trait, the first bar (darker color) excludes immune eQTLs from CNS SNPs, and the second bar (light color) is for all CNS SNPs (comprising 21.4% of all SNPs). (b) Enrichment of immune eQTLs (comprising 7.5% of all SNPs) in 18 traits from three categories: psychiatric disorders or CNS related disorder (red), immune system related disorders (blue), and other body somatic features (black). For each trait, the first bar (darker color) excluded CNS SNPs from immune eQTLs, and the second bar (light color) is for all immune eQTLs (comprising 10.1% of all SNPs).