Encorafenib plus binimetinib in patients with BRAF(V)(600)-mutant non-small cell lung cancer: Phase II PHAROS study design

Riely, G.J.; Ahn, M.J.; Felip, E.; Ramalingam, S.S.; Smit, E.F.; Tsao, A.S.; Alcasid, A.; Usari, T.; Wissel, P.S.; Wilner, K.D.; Johnson, B.E.

doi:doi:10.2217/fon-2021-1250

BRAF(V600) oncogenic driver mutations occur in 1-2% of non-small cell lung cancers (NSCLCs) and have been shown to be a clinically relevant target. Preclinical/clinical evidence support the efficacy and safety of BRAF and MEK inhibitor combinations in patients with NSCLC with these mutations. We describe the design of PHAROS, an ongoing, open-label, single-arm, Phase II trial evaluating the BRAF inhibitor encorafenib plus the MEK inhibitor binimetinib in patients with metastatic BRAF(V600) -mutant NSCLC, as first- or second-line treatment. The primary endpoint is objective response rate, based on independent radiologic review (per RECIST v1.1); secondary objectives evaluated additional efficacy endpoints and safety. Results from PHAROS will describe the antitumor activity/safety of encorafenib plus binimetinib in patients with metastatic BRAF(V600)-mutant NSCLC.Lay abstract: Some people with non-small cell lung cancer (NSCLC) have changes in a gene called BRAF (known as 'gene...Show moreBRAF(V600) oncogenic driver mutations occur in 1-2% of non-small cell lung cancers (NSCLCs) and have been shown to be a clinically relevant target. Preclinical/clinical evidence support the efficacy and safety of BRAF and MEK inhibitor combinations in patients with NSCLC with these mutations. We describe the design of PHAROS, an ongoing, open-label, single-arm, Phase II trial evaluating the BRAF inhibitor encorafenib plus the MEK inhibitor binimetinib in patients with metastatic BRAF(V600) -mutant NSCLC, as first- or second-line treatment. The primary endpoint is objective response rate, based on independent radiologic review (per RECIST v1.1); secondary objectives evaluated additional efficacy endpoints and safety. Results from PHAROS will describe the antitumor activity/safety of encorafenib plus binimetinib in patients with metastatic BRAF(V600)-mutant NSCLC.Lay abstract: Some people with non-small cell lung cancer (NSCLC) have changes in a gene called BRAF (known as 'gene mutations'). One common BRAF mutation is called 'V600'. Combinations of medicines that block proteins encoded by mutant BRAF and another gene called MEK can shrink tumors and slow their progression. We describe the design of PHAROS, a clinical trial investigating encorafenib (mutant BRAF inhibitor) combined with binimetinib (MEK inhibitor) in people with BRAF(V600)-mutant NSCLC that had spread to other parts of the body ('metastatic disease'). People are monitored for side effects and to see if their tumor shrunk. PHAROS includes people treated with encorafenib plus binimetinib as their first treatment for metastatic disease, and people whose cancer progressed after previous anticancer therapy.Show less

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Encorafenib plus binimetinib in patients with BRAF(V)(600)-mutant non-small cell lung cancer: Phase II PHAROS study design