Study of Sacituzumab Govitecan-hziy and Pembrolizumab Versus Treatment of Physician’s Choice in Patients With Triple Negative Breast Cancer Who Have Residual Invasive Disease After Surgery and Neoadjuvant Therapy (ASCENT-05/AFT-65 OptimICE-RD/GBG 119/NSABP B-63)

The goal of this study is to find out if the experimental product, sacituzumab govitecan-hziy (SG) in combination with pembrolizumab given after surgery, is effective and safe compared to the treatment of physician's choice (TPC) which includes either pembrolizumab or pembrolizumab plus capecitabine in participants with triple negative breast cancer that still remains after surgery and pre-surgical treatment.

• Key Inclusion Criteria: * Age > 18 years, with residual invasive triple negative breast cancer (TNBC) in the breast or lymph nodes after neoadjuvant therapy and surgery: * TNBC criteria for the study is defined as estrogen receptor (ER) and progesterone receptor (PR) ≤ 10%, human epidermal growth factor receptor 2 (HER2)-negative per American Society of Clinical Oncology and College of American Pathologists (ASCO/CAP) guidelines (immunohistochemistry (IHC) and/or in situ hybridization (ISH)). * Adequate excision and surgical removal of all clinically evident of disease in the breast and/or lymph nodes and have adequately recovered from surgery. * Submission of both pre-neoadjuvant treatment diagnostic biopsy and resected residual invasive disease tissue. * Eastern Cooperative Oncology Group (ECOG) performance status 0-1. * Individuals must have received appropriate radiotherapy aligned with local/institutional practice and have recovered prior to starting study treatment. * Adequate organ function. Key

Use the source registry for the full inclusion and exclusion criteria before discussing referral or enrolment.