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Phase 1 study of capmatinib in MET-positive solid tumor patients: Dose escalation and expansion of selected cohorts.

ABSTRACT: Capmatinib is an oral, ATP-competitive, and highly potent, type 1b MET inhibitor. Herein, we report phase 1 dose-escalation results for capmatinib in advanced MET-positive solid tumor patients and dose expansion in advanced non-lung tumors. Capmatinib was well tolerated with a manageable safety profile across all explored doses. Dose-limiting toxicities (DLT) occurred at 200 mg twice daily (bid), 250 mg bid, and 450 mg bid capsules; however, no DLT were reported at 600 mg bid (capsules). Capmatinib tablets at 400 mg bid had comparable tolerability and exposure to that of 600 mg bid capsules. Maximum tolerated dose was not reached; recommended phase 2 dose was 400 mg bid tablets/600 mg bid capsules; at this dose, Ctrough >EC90 (90% inhibition of c-MET phosphorylation in animal models) is expected to be achieved and maintained. Among the dose-expansion patients (N = 38), best overall response across all cohorts was stable disease (gastric cancer 22%, hepatocellular carcinoma 46%, other indications 28%); two other indication patients with gene copy number (GCN) ?6 achieved substantial tumor reduction. Near-complete immunohistochemically determined phospho-MET inhibition (H-score = 2) was shown following capmatinib 450 mg bid capsule in paired biopsies obtained from one advanced colorectal cancer patient. Incidence of high-level MET GCN (GCN ?6) and MET-overexpressing (immunohistochemistry 3+) tumors in the expansion cohorts was 8% and 13%, respectively; no MET mutations were observed. Thus, the recommended phase 2 dose (RP2D) of capmatinib was 600 mg bid capsule/400 mg bid tablet. Capmatinib was well tolerated and showed antitumor activity and acceptable safety profile at the RP2D. (ClinicalTrials.gov Identifier: NCT01324479).

SUBMITTER: Bang YJ

PROVIDER: S-EPMC7004521 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature

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Phase 1 study of capmatinib in MET-positive solid tumor patients: Dose escalation and expansion of selected cohorts.

Bang Yung-Jue YJ Su Wu-Chou WC Schuler Martin M Nam Do-Hyun DH Lim Wan Teck WT Bauer Todd M TM Azaro Analia A Poon Ronnie Tung Ping RTP Hong David D Lin Chia-Chi CC Akimov Mikhail M Ghebremariam Samson S Zhao Sylvia S Giovannini Monica M Ma Brigette B

Cancer science 20191230 2

Capmatinib is an oral, ATP-competitive, and highly potent, type 1b MET inhibitor. Herein, we report phase 1 dose-escalation results for capmatinib in advanced MET-positive solid tumor patients and dose expansion in advanced non-lung tumors. Capmatinib was well tolerated with a manageable safety profile across all explored doses. Dose-limiting toxicities (DLT) occurred at 200 mg twice daily (bid), 250 mg bid, and 450 mg bid capsules; however, no DLT were reported at 600 mg bid (capsules). Capmati ...[more]

PMID: 31778267

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Phase 1 study of capmatinib in MET-positive solid tumor patients: Dose escalation and expansion of selected cohorts.

Publications

Phase 1 study of capmatinib in MET-positive solid tumor patients: Dose escalation and expansion of selected cohorts.

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