A Study of Atezolizumab Plus Cobimetinib and Vemurafenib Versus Placebo Plus Cobimetinib and Vemurafenib in Previously Untreated BRAFv600 Mutation-Positive Patients With Metastatic or Unresectable Locally Advanced Melanoma

Summary

This is a Phase III, double-blinded, placebo-controlled, randomized, multicenter study designed to evaluate the efficacy, safety, and pharmacokinetics of atezolizumab + cobimetinib + vemurafenib compared with placebo + cobimetinib + vemurafenib in patients with previously untreated BRAFv600 mutation-positive metastatic or unresectable locally advanced melanoma.

Timeline

Start

2017-01-13

Primary completion

2019-10-11

Completion

2024-07-01

Outcome

Met primary endpoint

paper significantly prolonged with atezolizumab versus control (15·1 vs 10·6 months; hazard ratio [HR] 0·78; 95% CI 0·63-0·97; p=0·025). PMID 32534646 ↗

release “today announced the Phase III IMspire150 study, in people with previously untreated BRAF V600 mutation-positive advanced melanoma, met its primary endpoint of progression-free survival (PFS).” gene.com ↗

release “Phase III IMspire150 study, in which the addition of Tecentriq to Cotellic and Zelboraf helped people live longer without disease worsening or death” roche.com ↗

release “median PFS 15.1 months versus 10.6 months respectively; hazard ratio, HR=0.78; confidence interval: 0.63-0.97; P=0.025” gene.com ↗

Publications

• Li SN, Wan X, Peng LB, Li YM, Li JH. Cost-effectiveness of immune checkpoint inhibition and targeted treatment in combination as adjuvant treatment of patient with BRAF-mutant advanced melanoma. BMC Health Serv Res. 2023 Jan 18;23(1):49. doi: 10.1186/s12913-023-09058-7.
• Ascierto PA, Stroyakovskiy D, Gogas H, Robert C, Lewis K, Protsenko S, Pereira RP, Eigentler T, Rutkowski P, Demidov L, Zhukova N, Schachter J, Yan Y, Caro I, Hertig C, Xue C, Kusters L, McArthur GA, Gutzmer R. Overall survival with first-line atezolizumab in combination with vemurafenib and cobimetinib in BRAFV600 mutation-positive advanced melanoma (IMspire150): second interim analysis of a multicentre, randomised, phase 3 study. Lancet Oncol. 2023 Jan;24(1):33-44. doi: 10.1016/S1470-2045(22)00687-8. Epub 2022 Nov 29.
• Robert C, Lewis KD, Gutzmer R, Stroyakovskiy D, Gogas H, Protsenko S, Pereira RP, Eigentler T, Rutkowski P, Demidov L, Caro I, Forbes H, Shah K, Yan Y, Li H, McArthur GA, Ascierto PA. Biomarkers of treatment benefit with atezolizumab plus vemurafenib plus cobimetinib in BRAFV600 mutation-positive melanoma. Ann Oncol. 2022 May;33(5):544-555. doi: 10.1016/j.annonc.2022.01.076. Epub 2022 Feb 4.
• de Azevedo SJ, de Melo AC, Roberts L, Caro I, Xue C, Wainstein A. First-line atezolizumab monotherapy in patients with advanced BRAFV600 wild-type melanoma. Pigment Cell Melanoma Res. 2021 Sep;34(5):973-977. doi: 10.1111/pcmr.12960. Epub 2021 Feb 15.
• Gutzmer R, Stroyakovskiy D, Gogas H, Robert C, Lewis K, Protsenko S, Pereira RP, Eigentler T, Rutkowski P, Demidov L, Manikhas GM, Yan Y, Huang KC, Uyei A, McNally V, McArthur GA, Ascierto PA. Atezolizumab, vemurafenib, and cobimetinib as first-line treatment for unresectable advanced BRAFV600 mutation-positive melanoma (IMspire150): primary analysis of the randomised, double-blind, placebo-controlled, phase 3 trial. Lancet. 2020 Jun 13;395(10240):1835-1844. doi: 10.1016/S0140-6736(20)30934-X.

Drugs

Evaluation	Drug	Modality	Dose	Route
Subject	Atezolizumab	Monoclonal antibody	840 mg	Intravenous
Subject	Vemurafenib	Small molecule	720 mg	Oral
Subject	Vemurafenib	Small molecule	960 mg	Oral
Background	Cobimetinib	Small molecule	60 mg	Oral

Indications