HLA-DRB1 and vitiligo: We successfully genotyped the DRB4*01, DRB1*04, DRB1*07, DRB1*12 alleles by PCR-SSP in 1755 cases and 1742 controls and found the HLA-DRB1*07 allele to be significantly associated with vitiligo (p = 4.53×10−21, OR = 1.98, 95%CI = 1.72–2.29, Table S3).