NCT05633654 · Gilead Sciences
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)
What this study is about
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.
View original scientific description
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.
Interventions
DRUG
Sacituzumab govitecan-hziy (SG)
Administered intravenously
DRUG
Pembrolizumab
Administered intravenously
DRUG
Capecitabine
Tablets administered orally
Primary outcome measures
Invasive Disease-free Survival (iDFS)
Time frame: Up to 60 months
iDFS is defined as the time from the date of randomization to death from any cause or one of the following events (whichever occurs first): invasive local, regional, or distant recurrence, invasive contralateral breast cancer.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
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
Exclusion criteria
- Stage IV (metastatic) breast cancer as well as history of any prior (ipsi- or contralateral) invasive breast cancer.
- Prior treatment with another stimulatory or coinhibitory T-cell receptor agent (eg, cytotoxic T-lymphocyte-associated antigen 4 (CTLA-4), OX-40, cluster of differentiation 137 (CD137), prior treatment with any HER2-directed agent, prior endocrine therapy for \> 4 weeks or planned concurrent endocrine therapy while receiving on-study treatment.
- Evidence of recurrent disease following preoperative therapy and surgery.
- Prior treatment with topoisomerase 1 inhibitors or antibody-drug conjugates (ADCs) containing a topoisomerase inhibitor.
- Individuals with germline breast cancer gene (BRCA) mutations.
- Myocardial infarction or unstable angina pectoris within 6 months of enrollment or history of serious ventricular arrhythmia (ie, ventricular tachycardia or ventricular fibrillation), high-grade atrioventricular block, or other cardiac arrhythmias or Left ventricular ejection fraction (LVEF) of \< 50%
- Active serious infections requiring anti-microbial therapy. Note: Other protocol defined Inclusion/Exclusion criteria may apply.
Where
- Birmingham, Alabama
- Huntsville, Alabama
- Glendale, Arizona
- Phoenix, Arizona
- Prescott Valley, Arizona
- Berkeley, California
- Clovis, California
- Downey, California
- Fountain Valley, California
- Los Angeles, California
- Newport Beach, California
- Redlands, California
And 149 more locations — see the full list below.
Collaborators
Alliance Foundation Trials, LLC., NSABP Foundation Inc, GBG Forschungs GmbH
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Oct 13, 2026 · Source of record for eligibility and locations