RNF43 and colorectal carcinoma: RNF43 codon 659-mutated occurred frequently in right-sided CRC (59.32%, N=70, P<0.0001), and rarely in the left-sided (11.02%, N=13), while the left and right-sided were more balanced in the RNF43 Non-codon 659-mutated (34.15%, N=56; 46.95%, N=77).