The most frequently found alleles in the “no CIN” and CIN1 groups were DQB1*0602-8 (30/114, 26.3% and 18/46, 39.1%, respectively) and DQB1*0301 (30/114, 26.3% and 13/46, 28.3% respectively), but in CIN2+ group DQB1*0301 (50/122, 41,0%) and DQA1*0501 (33/122, 27.0%). The gene discussed is HLA-DQA1; the disease is cervical squamous intraepithelial neoplasia.