When the allele and genotype frequencies of rs10889677, rs1004819, and rs7530511 loci were evaluated within themselves in terms of genetic variation and population structure; the frequencies of IL-23R rs1004819 GT, and TT genotypes and rs7530511 TT genotype were found to be statistically significant between BD patients and HCs (p = 0.0246, p = 0.0435, p = 0.0109, respectively). Here, IL23R is linked to Behcet disease.