ABCC6 and acute lymphoblastic leukemia: It has been reported that ABCC1, ABCC2, ABCC3, ABCC4, ABCC5 and ABCC6 play a significant role in MDR mediated non-small cell lung cancer (NSCLC), breast cancer, prostate cancer, colorectal cancer, ovarian cancer and acute lymphoblastic leukemia (ALL) [67,68].