MKI67 and neoplasm: The patients with proliferation index Ki-67 > 20 had a significantly higher KRT6C concentration than patients with Ki-67 ≤ 20 (0.13789 (0.08662–0.17819) vs. 0.05961 (0.04652–0.1062)); (p = 0.0267) in the tumor samples (Figure 4).