PMID- 24169346 OWN - NLM STAT- MEDLINE DCOM- 20140211 LR - 20221207 IS - 1532-1827 (Electronic) IS - 0007-0920 (Print) IS - 0007-0920 (Linking) VI - 109 IP - 11 DP - 2013 Nov 26 TI - CYP2C19 genotype-based phase I studies of a c-Met inhibitor tivantinib in combination with erlotinib, in advanced/metastatic non-small cell lung cancer. PG - 2803-9 LID - 10.1038/bjc.2013.588 [doi] AB - BACKGROUND: A previous clinical study in non-small cell lung cancer (NSCLC) patients in Western countries suggested the potential for combination of a first-in-class non-ATP-competitive c-Met inhibitor tivantinib with an epidermal growth factor receptor-tyrosine kinase inhibitor erlotinib. Polymorphisms of CYP2C19, the key metabolic enzyme for tivantinib, should be addressed to translate the previous Western study to Asian population, because higher incidence of poor metabolisers (PMs) is reported in Asian population. METHODS: Japanese patients with advanced/metastatic NSCLC received tivantinib in combination with erlotinib to evaluate safety and pharmacokinetics. Doses of tivantinib were escalated separately for extensive metabolisers (EMs) and PMs. RESULTS: Tivantinib, when combined with erlotinib, was well tolerated up to 360 mg BID for EMs and 240 mg BID for PMs, respectively. Among 25 patients (16 EMs and 9 PMs), the adverse events (AEs) related to tivantinib and/or erlotinib (>20%, any grade) were rash, diarrhoea, dry skin and nausea. Grade >/=3 AEs were leukopenia, anaemia and neutropenia. No dose-limiting toxicity was observed. Pharmacokinetics profile of tivantinib was not clearly different between the combination and monotherapy. Three partial response and three long-term stable disease (>/=24 weeks) were reported. CONCLUSION: Two doses of tivantinib in combination with erlotinib were recommended based on CYP2C19 genotype: 360 mg BID for EMs and 240 mg BID for PMs. FAU - Yamamoto, N AU - Yamamoto N AD - Division of Thoracic Oncology, Shizuoka Cancer Center, 1007, Shimonagakubo, Nagaizumi-cho, Sunto-gun, Shizuoka 411-8777, Japan. FAU - Murakami, H AU - Murakami H FAU - Hayashi, H AU - Hayashi H FAU - Fujisaka, Y AU - Fujisaka Y FAU - Hirashima, T AU - Hirashima T FAU - Takeda, K AU - Takeda K FAU - Satouchi, M AU - Satouchi M FAU - Miyoshi, K AU - Miyoshi K FAU - Akinaga, S AU - Akinaga S FAU - Takahashi, T AU - Takahashi T FAU - Nakagawa, K AU - Nakagawa K LA - eng PT - Clinical Trial, Phase I PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't DEP - 20131029 PL - England TA - Br J Cancer JT - British journal of cancer JID - 0370635 RN - 0 (ARQ 197) RN - 0 (Protein Kinase Inhibitors) RN - 0 (Pyrrolidinones) RN - 0 (Quinazolines) RN - 0 (Quinolines) RN - DA87705X9K (Erlotinib Hydrochloride) RN - EC 1.14.14.1 (Aryl Hydrocarbon Hydroxylases) RN - EC 1.14.14.1 (CYP2C19 protein, human) RN - EC 1.14.14.1 (Cytochrome P-450 CYP2C19) RN - EC 2.7.10.1 (Proto-Oncogene Proteins c-met) SB - IM MH - Antineoplastic Combined Chemotherapy Protocols/pharmacokinetics/*therapeutic use MH - Aryl Hydrocarbon Hydroxylases/*genetics MH - Asian People MH - Carcinoma, Non-Small-Cell Lung/*drug therapy/ethnology/genetics/pathology MH - Cytochrome P-450 CYP2C19 MH - Disease Progression MH - Drug Dosage Calculations MH - Erlotinib Hydrochloride MH - Female MH - Genotype MH - Humans MH - Lung Neoplasms/*drug therapy/ethnology/genetics/pathology MH - Male MH - Middle Aged MH - Neoplasm Metastasis MH - Protein Kinase Inhibitors/*administration & dosage/adverse effects/pharmacokinetics MH - Proto-Oncogene Proteins c-met/antagonists & inhibitors MH - Pyrrolidinones/*administration & dosage/adverse effects/pharmacokinetics MH - Quinazolines/*administration & dosage/adverse effects/pharmacokinetics MH - Quinolines/*administration & dosage/adverse effects/pharmacokinetics PMC - PMC3844902 EDAT- 2013/10/31 06:00 MHDA- 2014/02/12 06:00 PMCR- 2014/11/26 CRDT- 2013/10/31 06:00 PHST- 2013/05/27 00:00 [received] PHST- 2013/08/23 00:00 [revised] PHST- 2013/09/04 00:00 [accepted] PHST- 2013/10/31 06:00 [entrez] PHST- 2013/10/31 06:00 [pubmed] PHST- 2014/02/12 06:00 [medline] PHST- 2014/11/26 00:00 [pmc-release] AID - bjc2013588 [pii] AID - 10.1038/bjc.2013.588 [doi] PST - ppublish SO - Br J Cancer. 2013 Nov 26;109(11):2803-9. doi: 10.1038/bjc.2013.588. Epub 2013 Oct 29.