Additional innate immunity genes previously described in the brain of NPC mice are Mpeg1, Gpnmb, Ctss, Ctsd, Ctsz, Grn, Clec7a, Itgax, Gp49a, Hexb, Lgls3bp, Tyrobp etc [5], [13], [14]. This evidence concerns the gene CTSS and nasopharyngeal carcinoma.