Examples of cis and trans eQTLs in hippocampus and striatum. A) Hippocampus cis eQTL. B) Striatum cis eQTL. C) Hippocampus trans eQTL. D) Striatum trans eQTL. Red horizontal line represents genome wide significance threshold of FDR < 5% for each tissue. Blue vertical line represents gene position. E) Degree of overlap between tissues for probes regulated by each marker between tissues at FDR < 5%. Significance shown as - log10(Q).