PROM1 and neoplasm: We also analyzed the bisulfite genomic sequencing results of the representative primary OSCC tumor samples (n = 3) and normal oral mucosal tissue samples (n = 3), and we observed that the primary OSCC tumor samples showed highly dense CpG methylated sites in CD133 (61.3–70.3%), CD147 (93.3%), and CD24 (66.7–93.3%).