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Encorafenib (LGX818)

Target: BRAF | Indications: Melanoma and Colorectal Cancer

Encorafenib is a novel oral small molecule kinase inhibitor with potent and selective inhibitory activity against mutant BRAF kinase, a member of the RAF/MEK/ERK pathway, which plays a prominent role in controlling several key cellular functions including growth, proliferation and survival. There are two Phase 3 trials with encorafenib in advanced cancer patients:  COLUMBUS (encorafenib in combination with binimetinib in BRAF-mutant melanoma) and BEACON CRC [encorafenib, binimetinib and Erbitux® (cetuximab) in BRAF-mutant colorectal cancer].  

In September 2017, Array announced that the U.S. Food and Drug Administration (FDA) has accepted for review its New Drug Applications (NDAs) to support use of the combination of binimetinib 45 mg twice daily and encorafenib 450 mg once daily (COMBO450) for the treatment of patients with BRAF-mutant advanced, unresectable or metastatic melanoma. The FDA set a target action date under the Prescription Drug User Fee Act (PDUFA) of June 30, 2018 for both applications. In addition, the FDA informed Array that based on their preliminary review of the applications they have not identified any potential review issues, and that they are not currently planning to hold an advisory committee meeting to discuss these NDAs.  Array completed its NDA submissions at the end of June 2017 based on findings from the pivotal Phase 3 COLUMBUS trial.  


1. Encorafenib (LGX818), a potent BRAF inhibitor, induces senescence accompanied by autophagy in BRAFV600E melanoma cells. 2016 Jan 28;370(2):332-44. doi: 10.1016/j.canlet.2015.11.015. Epub  2015 Nov 14.