SBT identified several sub-haplotypes including an HLA-B*14 allele (Cw*0802-B*1402, A*6802-B*1402 and A*1101-Cw*0802-B*1402) that appeared to be responsible for the negative relationship between HLA-B14 and the prevalence of NPC in Tunisians. The gene discussed is HLA-B; the disease is nasopharyngeal carcinoma.