IL16 and colorectal carcinoma: Little is known about the underlying molecular mechanisms of the interactions between rs2965667 at the 12p12.3/ phosphatidylinositol‐4‐phosphate 3‐kinase catalytic subunit type 2 gamma (PIK3C2G) locus, rs16973225 (15q25.2/interleukin 16) and aspirin and/or NSAID use on CRC risk.