KRT6C and neoplasm: However, in the analysis of KRT6B and KRT6C, we observed significantly higher concentration of protein in the margin than in the tumor specimens (for KRT6B 1.264 (0.63545–1.80653) vs. 0.518 (0.215–0.8901)); (p = 0.0009) and (for KRT6C 0.15724 (0.10418–0.30146) vs. 0.13441 (0.079336–0.18031)); (p = 0.0274).