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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)

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ClinicalTrials.gov Identifier: NCT05633654
Recruitment Status : Recruiting
First Posted : December 1, 2022
Last Update Posted : March 13, 2024
Sponsor:
Collaborator:
Alliance Foundation Trials, LLC.
Information provided by (Responsible Party):
Gilead Sciences

Study Description
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Brief Summary:
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.

Condition or disease Intervention/treatment Phase
Triple Negative Breast Cancer Drug: Sacituzumab govitecan-hziy (SG) Drug: Pembrolizumab Drug: Capecitabine Phase 3

Study Design
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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 1514 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Randomized, Open-label, Phase 3 Study of Adjuvant Sacituzumab Govitecan 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
Actual Study Start Date : December 12, 2022
Estimated Primary Completion Date : June 2027
Estimated Study Completion Date : August 2031

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Breast Cancer

Arms and Interventions
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Arm Intervention/treatment
Experimental: Sacituzumab govitecan-hziy (SG) + Pembrolizumab

Participants will receive SG 10 mg/kg intravenously on Days 1 and 8 of 21-day cycles and pembrolizumab 200 mg intravenously on Day 1 of 21-day cycles for 8 cycles.

Treatment will be administered until a maximum of 8 cycles, local or distant disease recurrence, unacceptable toxicity, physician decision, consent withdrawal, or death.

 Drug: Sacituzumab govitecan-hziy (SG)
Administered intravenously
Other Names:
  • GS-0132
  • IMMU-132
  • Trodelvy™

Drug: Pembrolizumab
Administered intravenously
Other Name: KEYTRUDA®
Active Comparator: Treatment of Physician's Choice (TPC): Pembrolizumab or Pembrolizumab + Capecitabine

Participants will receive one of the following TPC regimens determined prior to randomization:

  • Pembrolizumab 200 mg intravenously on Day 1 of 21-day cycles for 8 cycles OR
  • Pembrolizumab 200 mg intravenously on Day 1 of 21-day cycles and capecitabine 1000 mg/m^2 orally twice daily on Days 1 through 14 of 21-day cycles for 8 cycles.

Treatment will be administered until a maximum of 8 cycles, local or distant disease recurrence, unacceptable toxicity, physician decision, consent withdrawal, or death.

 Drug: Pembrolizumab
Administered intravenously
Other Name: KEYTRUDA®

Drug: Capecitabine
Tablets administered orally
Other Name: Xeloda


Outcome Measures
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Primary Outcome Measures :
  1. 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.


Secondary Outcome Measures :
  1. Overall Survival (OS) [ Time Frame: Up to 96 months ]
    OS is defined as the time from the date of randomization until death due to any cause.

  2. Distant Disease-free Survival (dDFS) [ Time Frame: Up to 60 months ]
    dDFS is defined as the time from the date of randomization to death from any cause or one of the following events (whichever occurs first): distant recurrence, or second primary invasive cancer.

  3. Recurrence-free Survival (RFS) [ Time Frame: Up to 60 months ]
    RFS 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.

  4. Percentage of Participants Experiencing Treatment-emergent Adverse Events (TEAEs) [ Time Frame: First dose date up to 38 months plus 30 days ]
  5. Percentage of Participants Experiencing Laboratory Abnormalities [ Time Frame: First dose date up to 38 months plus 30 days ]
  6. Time to Worsening (TTW) of Quality of Life (QoL) Based on Functional Assessment of Cancer Therapy for Breast Cancer (FACT-B) Trial Outcome Index (TOI) Scores [ Time Frame: Up to 60 months ]
    TTW of FACT-B TOI scores will be analyzed for each index, the TTW of FACT-B scores will be measured from the randomization date and to the time the participants first experienced a first score of worsening.


Eligibility Criteria
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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

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 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.
  • 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 known 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.

Contacts and Locations
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Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT05633654


Contacts
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Contact: Gilead Clinical Study Information Center 1-833-445-3230 (GILEAD-0) GileadClinicalTrials@gilead.com

Locations
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Sponsors and Collaborators
Gilead Sciences
Alliance Foundation Trials, LLC.
Investigators
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Study Director: Gilead Study Director Gilead Sciences
More Information
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Additional Information:

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Responsible Party: Gilead Sciences
ClinicalTrials.gov Identifier: NCT05633654    
Other Study ID Numbers: GS-US-595-6184
First Posted: December 1, 2022    Key Record Dates
Last Update Posted: March 13, 2024
Last Verified: March 2024
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

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Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by Gilead Sciences:
OptimICE-RD
AFT-65
Additional relevant MeSH terms:
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Breast Neoplasms
Triple Negative Breast Neoplasms
Neoplasms by Site
Neoplasms
Breast Diseases
Skin Diseases
Pembrolizumab
Capecitabine
Sacituzumab govitecan
 Antineoplastic Agents, Immunological
Antineoplastic Agents
Immune Checkpoint Inhibitors
Molecular Mechanisms of Pharmacological Action
Antimetabolites, Antineoplastic
Antimetabolites
Immunoconjugates
Immunologic Factors
Physiological Effects of Drugs