HLA-B and nasopharyngeal carcinoma: Ten strong effect haplotypes (H9-H11, H13-H14, H17-H18, H20, and H22-H23) carrying from one to four protective alleles with at least one allele from HLA-B*55:02 or rs2517664 or rs117495548 conferring 5.6- to 16.7-fold reduction of NPC risk relative to H1.