PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 33747646-4 2021 These medications inhibit two vital enzymes of cytochrome P-450, CYP2C9 and CYP3A4, potentiating the effects of ATRA on calcium metabolism. Tretinoin 112-116 cytochrome P450 family 2 subfamily C member 9 Homo sapiens 65-71