The study revealed that expression of the genes BMPR1B, DCLK3, HAPLN4, HLF, LMAN2L, MCHR1, UBE2Q2L, SNAP91, TTC39A, TMEM258, and VPS45 is regulated by eQTLs (identified using human brain tissues) that are SNPs associated with BD in a GWAS reported by the Psychiatric Genomics Consortium (PGC) (34) [samples from the PGC2 GWAS of BD (20)]. This evidence concerns the gene HAPLN4 and Behcet disease.