Transcription factors of the Nuclear Factor I (NFI) family control hepatocyte differentiation and cytochrome P450 activity in human liver. (PubMed, Pharmacol Res)
Recent reports have indicated that the minor allele of the nuclear transcription factor I/B (NFIB), rs28379954 T>C, affects the metabolism of risperidone and clozapine, which are mediated by CYP2D6 and CYP1A2, respectively. First, we reanalyzed the association between rs28379954 T>C and CYP2D6 activity in three independent cohorts exposed to CYP2D6 substrates (propafenone, tamoxifen, and sparteine) which revealed no association...We identified significant downregulation of several metabolic pathways related to hepatic functionality, PPAR signaling, and drug metabolism for NFIB, NFIC, and NFIX, whereas pathways associated with cancer biology were significantly induced. In summary our findings provide further insight into hepatic CYP regulation via the NFI network with implications for the understanding of interindividual variability of drug metabolism.