Trametinib Receives European Approval for B-Raf-mutant Metastatic Melanoma

BRAF V600

The European Commission has given marketing authorization for trametinib as monotherapy for unresectable or metastatic melanoma in adults with a mutation, GlaxoSmithKline announced.

MEK1

MEK2

BRAF

BRAF V600

Trametinib (Mekinist), a kinase inhibitor that targets / activation and kinase activity, has not demonstrated clinical activity in patients who have progressed on a prior inhibitor therapy. Before taking trametinib, patients must have confirmation of a mutation using a validated test.

BRAF

V600E

V600K

The European Commission’s decision was based on results from the randomized, open-label phase 3 METRIC study of 322 patients with -mutant melanoma (types and ) who were either treatment-naïve or have received one prior chemotherapy treatment in the metastatic setting.

P

According to study results, treatment with trametinib resulted in a statistically significant increase in PFS compared to chemotherapy (HR= 0.45; 95% CI: 0.33, 0.63, <0.0001), with a median PFS of 4.8 months for patients taking trametinib (95% CI: 4.3, 4.9) vs. 1.5 months for chemotherapy (95% CI: 1.4, 2.7).

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Source: Healio