KRT18 and cancer: The results (Supplementary Figure S5D) indicated that no significant relationship was found between CK18 overexpression and outcome of cancer patients in both subgroup with chemotherapy (HR = 0.93, 95%CI: 0.65–1.33, P=0.70) and subgroup without chemotherapy (HR = 1.05, 95%CI: 0.69–1.59, P=0.84).