On October 29, 2020 Chugai Pharmaceutical Co., Ltd. (TOKYO: 4519; hereinafter "Chugai") reported that results from the investigator-initiated phase I study of RAK/MEK inhibitor, CKI27 (VS-6766) conducted in the U.K. was published on October 28, 2020 (local time) in the online version of the Lancet Oncology. CKI27 is out-licensed from Chugai to Verastem Oncology, a U.S.-based company (Press release, Chugai, OCT 29, 2020, View Source [SID1234569237]).
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"Intermittent schedules of the oral RAF–MEK inhibitor CH5126766/VS-6766 in patients with RAS/RAF-mutant solid tumours and multiple myeloma: a single-centre, open-label, phase 1 dose-escalation and basket dose-expansion study"
https://www.thelancet.com/journals/lanonc/article/PIIS1470-2045(20)30464-2/fulltext
The study was an investigator-initiated study in patients with RAS/RAF-mutated solid tumors and multiple myeloma, conducted at The Institute of Cancer Research, London, and The Royal Marsden NHS Foundation Trust in the U.K. It consisted of two parts; 1) dose escalation part to determine the recommended dosage (29 patients) and 2) basket expansion part to investigate efficacy and safety of the recommended dosage determined in the dose escalation part (29 patients).
The recommended dosage were determined to be 4 mg/day twice weekly in the dose escalation part. In the subsequent basket expansion part, 7 of 26 evaluable patients (26.9%) achieved objective responses. All patients with KRAS-mutation had non-G12C mutations. The most common treatment-related adverse events occurred as grade 3 or higher based on CTCAE v4.0 (the Common Terminology Criteria for Adverse Events provided by the U.S. National Cancer Institute) was skin rash, which developed in 11 of 57 evaluable patients (19.3%). No treatment-related death occurred. The results of the study were announced in the 53rd American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) Annual Meeting (June, 2017).
CKI27 (VS-6766) is a new oral RAF/MEK inhibitor. Under the global licensing agreement concluded in January, 2020, clinical development of CKI27 is being conducted by Verastem Oncology under the name of VS-6766.
Chugai, which aims at becoming a top innovator in the healthcare industry, continues to pursue science and proprietary technology and promote open innovation including collaboration with academia, to contribute for patients across the world through innovative drugs.