Vemurafenib in patients with BRAFV600 mutated metastatic melanoma: an open-label, multicentre, safety study - 01/04/14
, Michele Del Vecchio, MD b, Paolo A Ascierto, MD c, Ivana Krajsova, MD d, Jacob Schachter, ProfMD e, Bart Neyns, MD f, Enrique Espinosa, MD g, Claus Garbe, ProfMD h, Vanna Chiarion Sileni, MD i, Helen Gogas, MD j, Wilson H Miller, MD k, Mario Mandalà, MD l, Geke A P Hospers, ProfMD m, Ana Arance, MD n, Paola Queirolo, ProfMD o, Axel Hauschild, ProfMD p, Michael P Brown, PhD q, Lada Mitchell, PhD r, Luisa Veronese, MD r, Christian U Blank, DrMD s, ⁎ Summary |
Background |
The orally available BRAF kinase inhibitor vemurafenib, compared with dacarbazine, shows improved response rates, progression-free survival (PFS), and overall survival in patients with metastatic melanoma that has a BRAFV600 mutation. We assessed vemurafenib in patients with advanced metastatic melanoma with BRAFV600 mutations who had few treatment options.
Methods |
In an open-label, multicentre study, patients with untreated or previously treated melanoma and a BRAFV600 mutation received oral vemurafenib 960 mg twice a day. The primary endpoint was safety. All analyses were done on the safety population, which included all patients who received at least one dose of vemurafenib. This report is the third interim analysis of this study. This study is registered with ClinicalTrials.gov, number NCT01307397.
Findings |
Between March 1, 2011, and Jan 31, 2013, 3226 patients were enrolled in 44 countries. 3222 patients received at least one dose of vemurafenib (safety population). At data cutoff, 868 (27%) patients were on study treatment and 2354 (73%) had withdrawn, mainly because of disease progression. Common adverse events of all grades included rash (1592 [49%]), arthralgia (1259 [39%]), fatigue (1093 [34%]), photosensitivity reaction (994 [31%]), alopecia (826 [26%]), and nausea (628 [19%]). 1480 (46%) patients reported grade 3 or 4 adverse events, including cutaneous squamous cell carcinoma (389 [12%]), rash (155 [5%]), liver function abnormalities (165 [5%]), arthralgia (106 [3%]), and fatigue (93 [3%]). Grade 3 and 4 adverse events were reported more frequently in patients aged 75 years and older (n=257; 152 [59%, 95% CI 53–65] and ten [4%, 2–7], respectively) than in those younger than 75 years (n=2965; 1286 [43%, 42–45] and 82 [3%, 2–3], respectively).
Interpretation |
Vemurafenib safety in this diverse population of patients with BRAFV600 mutated metastatic melanoma, who are more representative of routine clinical practice, was consistent with the safety profile shown in the pivotal trials of this drug.
Funding |
F Hoffmann-La Roche.
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Vol 15 - N° 4
P. 436-444 - avril 2014 Retour au numéro
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