By examining the co-relationship between promoter–promoter interaction and expression level, we were able to able to observe four clusters—iPSC Group 1 (iPSC G1), iPSC Group 2 (iPSC G2), NPC Group 1 (NPC G1) and NPC Group 2 (NPC G2). The gene discussed is NPC1; the disease is nasopharyngeal carcinoma.