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|Ref Type||Journal Article|
|Authors||Zhang J, Lu B, Liu D, Shen R, Yan Y, Yang L, Zhang M, Zhang L, Cao G, Cao H, Fu B, Gong A, Sun Q, Wan H, Zhang L, Tao W, Cao J|
|Title||EBI-907, a novel BRAF(V600E) inhibitor, has potent oral anti-tumor activity and a broad kinase selectivity profile.|
|Abstract Text||The oncogenic mutation of BRAF(V600E) has been found in approximately 8% of all human cancers, including more than 60% of melanoma and 10% of colorectal cancers. The clinical proof of concept in treating BRAF(V600E)-driving melanoma patients with the BRAF inhibitors has been well established. We have sought to identify and develop novel BRAF(V600E) inhibitors with more favorable profiles. Our chemistry effort has led to the discovery of EBI-907 as a novel BRAF(V600E) inhibitor with potent anti-tumor activity in vitro and in vivo. In a LanthaScreen BRAF(V600E) kinase assay, EBI-907 showed an IC50 of 4.8 nM, which is >10 -fold more potent than Vemurafenib (IC50 = 58.5 nM). In addition, EBI-907 showed a broader kinase selectivity profile, with potent activity against a number of important oncogenic kinases including FGFR1-3, RET, c-Kit, and PDGFRb. Concomitant with such properties, EBI-907 exhibits potent and selective cytotoxicity against a broader range of BRAF(V600E)-dependent cell lines including certain colorectal cancer cell lines with innate resistance to Vemurafenib. In BRAF(V600E)-dependent human Colo-205 and A375 tumor xenograft mouse models, EBI-907 caused a marked tumor regression in a dose-dependent manner, with superior efficacy to Vemurafenib. Our results also showed that combination with EGFR or MEK inhibitor enhanced the potency of EBI-907 in cell lines with innate or acquired resistance to BRAF inhibition alone. Our findings present EBI-907 as a potent and promising BRAF inhibitor, which might be useful in broader indications.|
|Molecular Profile||Treatment Approach|
|Gene Name||Source||Synonyms||Protein Domains||Gene Description||Gene Role|
|Drug Name||Trade Name||Synonyms||Drug Classes||Drug Description|
|EBI-907||BRAF Inhibitor 25 FGFR1 Inhibitor 28 FGFR2 Inhibitor 22 FGFR3 Inhibitor 19 KIT Inhibitor 57 PDGFR-beta Inhibitor 14 RET Inhibitor 52||EBI-907 is a multi-kinase inhibitor that inhibits BRAF V600E, FGFR1-3, RET, KIT, and PDGFRb, which results in tumor growth inhibition (PMID: 26810733).|
|Gene||Variant||Impact||Protein Effect||Variant Description||Associated with drug Resistance|
|Molecular Profile||Indication/Tumor Type||Response Type||Therapy Name||Approval Status||Evidence Type||Efficacy Evidence||References|
|BRAF V600E||melanoma||sensitive||EBI-907||Preclinical - Cell line xenograft||Actionable||In a preclinical study, EBI-907 inhibited BRAF and ERK signaling, resulted in growth inhibition of melanoma cells harboring BRAF V600E in culture and in cell line xenograft models (PMID: 26810733).||26810733|
|BRAF V600E||colorectal cancer||sensitive||EBI-907||Preclinical - Cell line xenograft||Actionable||In a preclinical study, EBI-907 inhibited BRAF and ERK signaling, resulted in growth inhibition of colorectal cancer cells harboring BRAF V600E in culture and in cell line xenograft models (PMID: 26810733).||26810733|