For instance, the HLA-A2 serologic family includes about 100 alleles [15] whose distribution is different among ethnic groups with HLA-A*0201 (~90%) and HLA-A*0205 (~5%) predominant among Caucasian and HLA-A*0203 (~20%) -A*0206 (~15%) and -A*0207 (~40%) in Asians [16-19] Interestingly, sequence based typing (SBT) in Taiwanese identified a positive association between HLA-A*0207 (but not other HLA-A2 subtypes) and NPC [10]. The gene discussed is HLA-A; the disease is nasopharyngeal carcinoma.