CNR2 and rectal cancer: Cox`s regression model confirmed the prognostic value of CB2 expression for both DFS and OS for colon (Tables 2 and 3), but not for rectal cancer (DFS, HR 1.54 (95% CI, 0.53-4.45) (p = 0.43), and OS, HR 2.03 (95% CI, 0.82-5.1) (p=0.13)).