PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 27398225-1 2016 BACKGROUND: Regorafenib and its metabolites may inhibit the activities of several CYP or UDP-glucuronosyltransferase isoforms, including that of CYP2C9. regorafenib 12-23 cytochrome P450 family 2 subfamily C member 9 Homo sapiens 145-151 27398225-2 2016 Therefore, pharmacological agents that are CYP2C9 substrates may show elevated circulating levels and enhanced drug efficacy when concurrently used with regorafenib. regorafenib 153-164 cytochrome P450 family 2 subfamily C member 9 Homo sapiens 43-49 27398225-3 2016 Previous studies showed that the area under the plasma concentration-time curve of warfarin, which is the substrate for CYP2C9, increased upon co-administration of regorafenib. regorafenib 164-175 cytochrome P450 family 2 subfamily C member 9 Homo sapiens 120-126