TP53 and colonic neoplasm: In a previous study, SuperArray analysis showed that PXR-mediated deoxycholic acid resistance was associated with the upregulation of multiple anti-apoptotic genes, including BIRC2, BAG3 and MCL-1 and downregulation of proapoptotic genes, such as TP53/p53 and BAK1 in human colon cancer cells (43).