EXOC7 and malignant colon neoplasm: To further define the role of Exo70 in colon cancer prognosis, a Kaplan-Meier analysis of OS showed reduced survival in patients with strongly positive Exo70 expression (+++) compared to patients with slightly positive (+) and moderately positive (++) Exo70 expression (log-rank, P = 0.03, Fig. 4a).