お知らせ • Jul 01
Verastem Oncology Announces Nature Medicine Publication of the Results from the First-In-Human Phase 1 FRAME Study of Avutometinib in Solid Tumors, Including Low-Grade Serious Ovarian Cancer
Verastem Oncology announced that updated results from the Phase 1/2 FRAME study conducted by The Institute of Cancer Research, London, and The Royal Marsden NHS Foundation Trust were published online in Nature Medicine. The full manuscript, titled “Defactinib with avutometinib in patients with solid tumors: the phase 1 FRAME trial,” was the first-in-human study to evaluate the safety, tolerability, and efficacy of avutometinib in combination with defactinib in patients with low-grade serous ovarian cancer (LGSOC), non-small cell lung cancer (NSCLC), and other solid tumor types. The FRAME study enrolled patients, across dose escalation and dose expansion cohorts, with RAS-MAPK-driven solid tumors including LGSOC, NSCLC, colorectal, pancreatic and endometrial cancers. The updated data include an extended follow-up period and more detailed analyses from the FRAME study, featuring efficacy and safety data that demonstrated the novel combination of avutometinib and defactinib continues to be well-tolerated and shows encouraging responses in patients with LGSOC, consistent with previous findings. In 26 patients with LGSOC who were evaluable for efficacy, the overall response rate (ORR) was 42.3% (11/26) and median progression-free survival (mPFS) was 20.1 months. In the 24 patients whose samples could be sequenced for KRAS mutations, ORR and mPFS were 58.3% (7/12) and 30.8 months in the 12 patients with KRAS mutations, and 33.3% (4/12) and 8.9 months in the 12 patients without KRAS mutations. In 11 patients who had previously received a MEK inhibitor, the ORR was 27.3% (3/11). Additionally, in two patients with LGSOC who had brain metastases prior to enrolling, MRI imaging at 30 months post-treatment with the combination showed the metastases had shrunk in both patients. In 27 patients with LGSOC who were evaluable for safety, only one (4%) discontinued treatment due to Grade 3 skin toxicity. The five most common adverse events (AEs) (all grades, grade =3) were: rash (90%, 8%), elevated blood levels of creatine phosphokinase (56%, 9%), AST elevation (43%, 1%), hyperbilirubinemia (38%, 2%), and diarrhea (38%, 1%). The tolerability profile of avutometinib plus defactinib was comparable to the tolerability of each agent as monotherapy. The FRAME study is an open-label, investigator-initiated study that is designed to assess safety, dose response, and preliminary efficacy of the VS-6766/defactinib combination in patients with KRAS mutant solid tumors, including low-grade serous ovarian cancer (LGSOC), non-small cell lung cancer (NSCLC) and colorectal cancer (CRC). The FRAME study is being led by Professor Udai Banerji, MBBS, MD, DNB, PhD, FRCP, Deputy Director of the Drug Development Unit at The Institute of Cancer Research, London, and The Royal Marsden NHS Foundation Trust, and is being conducted in the United Kingdom. In this study, VS-6766 was administered using a twice-weekly dose escalation schedule and was administered three out of every four weeks. Defactinib was administered using a twice-daily dose escalation schedule, also three out of every four weeks. Dose levels were assessed in three cohorts: cohort 1 (avutometinib 3.2mg, defactinib 200mg); cohort 2a (avutometinib 4mg, defactinib 200mg); and cohort 2b (avutometinib 3.2mg, defactinib 400mg). The recommended Phase 2 dose was determined to be cohort 1 (avutometinib 3.2mg, defactinib 200mg).