Trial Identifiers
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Scientific Title
A Phase III, Double-Blinded, Randomized, Placebo-Controlled Study of Atezolizumab Plus Cobimetinib and Vemurafenib Versus Placebo Plus Cobimetinib and Vemurafenib in Previously Untreated BRAFV600 Mutation-Positive Patients With Unresectable Locally Advanced or Metastatic Melanoma
Commercial Sponsor
Hoffmann-La Roche
Summary
This is a randomised, double-blind trial that has two experimental arm. In Experimental Arm 1, participants will receive Atezolizumab + Cobimetinib + Vemurafenib + Vemurafenib Placebo. There will be a Run-In Period (Cycle 1=28 days): where participants receive vemurafenib 960 mg (four, 240 mg tablets, orally twice daily) along with cobimetinib 60 mg (three, 20 mg tablets, orally once daily) on Days 1 to 21 followed by vemurafenib 720 mg (three, 240 mg tablets, orally twice daily) on Days 22 to 28 and vemurafenib placebo (1 tablet, orally twice daily) on Days 22 to 28. There will then be a Triple Combination Period (Cycle 1 onwards): where participants will receive atezolizumab 840 mg via intravenous infusion (IV) on Day 1 and 15, cobimetinib 60 mg (three, 20 mg tablets, orally once daily) on Days 1 to 21, vemurafenib 720 mg (three, 240 mg tablets, orally twice daily) on Days 1 to 28, and vemurafenib placebo (1 tablet, orally twice daily) on Days 1 to 28 of each 28-day cycle. In Experimental Arm 2, participants will receive Atezolizumab Placebo + Cobimetinib + Vemurafenib. In the Run In Period (Cycle 1=28 days), participants will receive vemurafenib 960mg (four, 240 mg tablets, orally twice daily) along with cobimetinib 60 mg (three, 20 mg tablets, orally once daily) on Days 1 to 21 followed by vemurafenib 960 mg (four, 240 mg tablets, orally twice daily) on Days 22 to 28. In the Triple Combination Period (Cycle 1 onwards), participants will receive Atezolizumab placebo via IV on Day 1 and 15, cobimetinib 60 mg (three, 20 mg tablets, orally once daily) on Days 1 to 21, and vemurafenib 960 mg (four, 240 mg tablets, orally twice daily) on Days 1 to 28 of each 28-day cycle.