This is of particular significance because both HLA-B*1402 and HLA-Cw*0802 belong to the same ancestral haplotype which was present not only in Tunisians but also Moroccan Berbers but practically absent in Tunisian patients with NPC (OR = 0.12, Fisher's test p-2 value = 0.001). Here, HLA-B is linked to nasopharyngeal carcinoma.