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A Phase Ib/II, Open-Label, Multicenter, Randomized Umbrella Study Evaluating The Efficacy And Safety Of Multiple Immunotherapy-Based Treatment Combinations In Patients With Metastatic Triple-Negative Breast Cancer
This is a Phase Ib/II, open-label, multicenter, randomized umbrella study evaluating the efficacy and safety of multiple immunotherapy-based treatment combinations in patients with metastatic TNBC who had disease progression during or following first-line metastatic treatment with chemotherapy.
The study will be performed in two stages. During Stage 1, participants will be randomized to capecitabine (control) or an atezolizumab-containing doublet or triplet combination. Those who experience disease progression, loss of clinical benefit, or unacceptable toxicity may be eligible to receive a new doublet combination treatment in Stage 2 until loss of clinical benefit or unacceptable toxicity. New treatment arms may be added and/or existing treatment arms may be closed during the course of the study on the basis of ongoing clinical efficacy and safety as well as the current treatments available.