PRKCI and squamous cell carcinoma: The PRKCI mRNA level was significantly higher in the tumor group (N = 306) than in the normal group (N = 13) (4.66 ± 0.769 vs. 3.736 ± 0.295, p < 0.001), but no significant differences were found between the squamous cell carcinoma and adenocarcinoma CC samples (Figure 1C).