BRAF G464E

Regardless of the therapeutic effect of class I BRAF inhibitors such as vemurafenib, dabrafenib and encorafenib, melanoma patients with BRAF non-V600/RAS mutations remain limited response...The effect of PHI-501 on anchorage independent growth and cell proliferation compared to vemurafenib or belvarafenib (pan-RAF inhibitor) were tested in A375 (BRAFV600E), C8161 (BRAFG464E) and SK-MEL-2 (NRASQ61R) melanoma cell lines by soft agar assay, western blot and FACS analysis... PHI-501, a novel pan-RAF inhibitor, has potent oral anti-tumor activity. Melanoma cells harboring BRAF non-V600/NRAS or BRAF common V600E mutations exhibited significantly reduced proliferation, increased apoptosis and inhibited migration upon treatment with PHI-501. The results of this study suggest that PHI-501 has a potential to overcome the limited response in the treatment of melanoma, and warrant evaluation of PHI-501 as a single agent to treat both BRAF-and NRAS-mutated metastatic melanoma.