KRT7 and colorectal carcinoma: A recent study performed by Al-Maghrabi and colleagues included survival analysis of 144 cases of CRC to clarify the significance of the CK expression pattern; the study failed to find evidence of any significant relationship5 but the authors grouped the cases similarly as we did with similar results: CK7-/CK20 + in 60% (n = 87), CK7-/CK20 + in 2% (n = 3), CK7-/CK20- in 36% (n = 51), and CK7 + /CK20- in 2% (n = 3).