SULT1A1 and colorectal carcinoma: In the current meta-analysis, on the basis of 12 case-control studies providing data on the SULT1A1 R213H polymorphism and CRC involving 3,549 cases and 5,610 controls, we did not find any significant association between the SULT1A1 R213H polymorphism and CRC among overall and Caucasian populations.