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|Ref Type||Journal Article|
|Authors||Sullivan RJ, Hamid O, Gonzalez R, Infante JR, Patel MR, Hodi FS, Lewis KD, Tawbi HA, Hernandez G, Wongchenko MJ, Chang Y, Roberts L, Ballinger M, Yan Y, Cha E, Hwu P|
|Title||Atezolizumab plus cobimetinib and vemurafenib in BRAF-mutated melanoma patients.|
|Abstract Text||Melanoma treatment has progressed in the past decade with the development and approval of immune checkpoint inhibitors targeting programmed death 1 (PD-1) or its ligand (PD-L1) and cytotoxic T lymphocyte-associated antigen 4, as well as small molecule inhibitors of BRAF and/or MEK for the subgroup of patients with BRAFV600 mutations1-9. BRAF/MEK-targeted therapies have effects on the tumor microenvironment that support their combination with PD-1/PD-L1 inhibitors10-20. This phase Ib study (ClinicalTrials.gov, number NCT01656642 ) evaluated the safety and anti-tumor activity of combining atezolizumab (anti-PD-L1) with vemurafenib (BRAF inhibitor), or cobimetinib (MEK inhibitor) + vemurafenib, in patients with BRAFV600-mutated metastatic melanoma. Triple combination therapy with atezolizumab + cobimetinib + vemurafenib, after a 28-d run-in period with cobimetinib + vemurafenib, had substantial but manageable toxicity. Exploratory biomarker data show that the cobimetinib + vemurafenib run-in was associated with an increase in proliferating CD4+ T-helper cells but not with an increase in T-regulatory cells, as observed in the vemurafenib-only run-in period. The confirmed objective response rate was 71.8% (95% confidence interval 55.1-85.0). The estimated median duration of response was 17.4 months (95% confidence interval 10.6-25.3) with ongoing response in 39.3% of patients after 29.9 months of follow-up. Further investigation in a phase III trial is underway.|
|Molecular Profile||Treatment Approach|
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|BRAF V600X||melanoma||sensitive||Atezolizumab + Cobimetinib + Vemurafenib||Phase Ib/II||Actionable||In a Phase Ib trial, the combination therapy of Tecentriq (atezolizumab), Zelboraf (vemurafenib), and Cotellic (cobimetinib) in patients with metastatic melanoma harboring a BRAF V600 mutation resulted in a best objective response rate of 71.8% (28/39), with a complete response in 20.5% (8/39), a median progression-free survival of 12.9 months, a median overall survival not yet reached, and median duration of confirmed response of 17.4 months (PMID: 31171876; NCT01656642).||detail... 31171876|
|BRAF V600X||melanoma||sensitive||Atezolizumab + Vemurafenib||Phase Ib/II||Actionable||In a Phase Ib trial, the combination therapy of Tecentriq (atezolizumab) and Zelboraf (vemurafenib) in patients with metastatic melanoma harboring a BRAF V600 mutation resulted in a best objective response rate of 76.5% (13/17), with a complete response in 17.6% (3/17), a median progression-free survival of 10.9 months, a median overall survival of 46.2 months, and median duration of confirmed response of 10.6 months (PMID: 31171876; NCT01656642).||31171876|