Of the four genes, Tcf7l1, Tcf7l2, and Tcf7 transcripts were expressed at low (2–10 TPM; Tcf7l2 and Tcf7) or moderate (50 TPM; Tcf7l1) levels in low CHIR NPC maintenance conditions. This evidence concerns the gene TCF7L1 and nasopharyngeal carcinoma.