ABCB1 and colorectal adenocarcinoma: This finding was reported earlier in colorectal adenocarcinoma where the ectopic expression of exogenous miRNA-34a re-sensitized MDR-human colorectal adenocarcinoma cell-line HCT-8/OR to oxaliplatin treatment through targeting ABCB1, ABCC2, ABCG2 and antiapoptosis pathways [48].