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Drugs Fut 2011, 36(3): 191
ISSN 0377-8282
Copyright 2011 Clarivate Analytics
CCC: 0377-8282
DOI: 10.1358/dof.2011.036.03.1590788
 
 
Vemurafenib
Puzanov, I., Flaherty, K.T., Sosman, J.A., Grippo, J.F., Su, F., Nolop, K., Lee, R.J., Bollag, G.
 
 
Vemurafenib (RG-7204, PLX-4032) is a potent inhibitor of the V600E mutation-positive B-raf kinase. Mutations in this protein have been implicated in approximately 50% of melanomas, 30-70% of thyroid tumors, 30% of serous low-grade ovarian tumors and 10% of colorectal cancers. Vemurafenib has shown promising preclinical and clinical efficacy against mutant BRAF cell lines and tumors. Vemurafenib exhibits selectivity over a broad range of kinases, which has translated into cellular selectivity for cancer cell lines expressing BRAFV600E, BRAFV600D and BRAFV600R, with no activity against cells lacking oncogenic B-raf. Pharmacokinetic analyses have shown that exposure increases with dose from 160 mg to 1,120 mg twice daily, and a dose of 960 mg twice daily was selected for phase II and III evaluation. Phase I and II clinical data have demonstrated promising activity, with the recently reported BRIM-2 study in patients with metastatic melanoma having met its primary endpoint, demonstrating a best overall response rate of > 50% in the context of manageable side effects.


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