Journal article

A phase II randomized trial of cobimetinib plus chemotherapy, with or without atezolizumab, as first-line treatment for patients with locally advanced or metastatic triple-negative breast cancer (COLET): primary analysis

A Brufsky, SB Kim, Z Zvirbule, A Eniu, J Mebis, JH Sohn, M Wongchenko, S Chohan, R Amin, Y Yan, V McNally, D Miles, S Loi

ANNALS OF ONCOLOGY | ELSEVIER | Published : 2021

Abstract

BACKGROUND: Resistance to standard chemotherapy in metastatic triple-negative breast cancer (mTNBC) is associated with upregulation of the mitogen-activated protein kinase (MAPK) pathway. Cobimetinib, an MAPK/extracellular signal-regulated kinase (MEK) inhibitor, may increase sensitivity to taxanes and programmed death-ligand 1 inhibitors. COLET is a three-cohort phase II study evaluating first-line cobimetinib plus chemotherapy, with or without atezolizumab, in patients with locally advanced or mTNBC. PATIENTS AND METHODS: Patients were ≥18 years with locally advanced or mTNBC. Following a safety run-in, patients in cohort I were randomized 1:1 to cobimetinib (60 mg, D3-D23 of each 28-day c..

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