The rs6839448C>A and rs7617492G>A tagSNPs in SLCO2A1 were implicated in colorectal carcinogenesis Furthermore, individuals carrying the haplotype containing both the A and G alleles of rs6839448 and rs7617492 tagSNPs (TAGAAC), respectively, had a nearly 50% protection for CRC. This evidence concerns the gene SLCO2A1 and medical procedure.