PIK3CA and colorectal carcinoma: In addition to BRAF p.V600E (OR=4.76; 95% CI: [2.35-9.67], P < 0.001), right-sided CRC also harbored a higher incidence of KRAS mutations (OR=1.41; 95% CI: [0.96-2.08], P = 0.08) and PIK3CA mutations (OR=2.18; 95% CI: [1.41-3.39], P < 0.001).