Multiple SNPs (rs12119179, rs4655535, rs924080, rs11209032, rs1343151, rs1495965, rs1495966, rs17375018, rs7517847, rs34426521, 10489629 and rs1966176) located in IL-23R/IL-12RB2 genes were involved in BD in the populations of Turkey (11), Japanese (12), Han Chinese (14, 42, 43), Iranian (21), Korean (45), Spain (29), and Western Algeria (95). This evidence concerns the gene IL23R and Behcet disease.