Regional associations of the variants in the major histocompatibility complex region with cervical cancer risk in the Japanese population estimated on the basis of the human leukocyte antigen (HLA) imputation analysis. Left, Nominal regional associations. Right, Regional associations conditioned on HLA-B*52:01. Each diamond represents the −log10(P) of the variants, including single-nucleotide variant (SNV); 2-digit, 4-digit, and 6-digit HLA alleles; and amino acid variants of HLA genes. The dashed horizontal line represents genome-wide significance threshold of P = 5.0 × 10−8.