MKI67 and malignant colon neoplasm: In contrast, in the group of patients with colon cancer stage III and a high Ki-67 expression, 5-year RFS in those receiving adjuvant chemotherapy was 77% (s.e. 0.09) as compared with 50% (s.e. 0.12) in those treated with surgery without adjuvant chemotherapy (P=0.046).