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What are the important and common adverse events observed with BRAF inhibitors?. How should they be managed? Are there significant differences between the two approved BRAF inhibitors d abrafenib and v emurafenib ?. Vemurafenib : Grade 3/4 adverse r eactions in ≥2% of patients (BRIM2).
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What are the important and common adverse events observed with BRAF inhibitors? How should they be managed? Are there significant differences between the two approved BRAF inhibitors dabrafenib and vemurafenib?
Vemurafenib: Grade 3/4 adverse reactions in ≥2% of patients (BRIM2) No dose modification or interruption was required Vemurafenib Prescribing Information, Genentech, Inc.; 2011 Sosman et al, N Engl J Med 2012; 366: 707–714
Dabrafenib: Treatment-related AEs in ≥5% of patients (BREAK3) Photosensitivity: dabrafenib (3%), DTIC (5%). Photosensitivity: dabrafenib (3%), DTIC (5%). Hauschild et al, ASCO 2012; LBA8500 Hauschild et al, Lancet 2012; 380: 358–65
BRAF+MEK treatment-related AEs ≥ 20%(all grades) Long et al, ESMO 2012; LBA27 Flaherty et al, N Engl J Med 2012; 367: 1694–703
BRAFi + MEKiassociated AEs (Part C) Long et al, ESMO 2012; LBA27 Flaherty et al, N Engl J Med 2012; 367: 1694–703
Toxicities of BRAF inhibitors? The overall side effect profiles and efficacy of vemurafenib and dabrafenib seen similar • Although fewer squamous cancers appear with dabrafenib, albeit with more fevers The combination of BRAF + MEK clearly results in less skin toxicity but a slightly higher rate of febrile reactions