CClinicalTrials.gg
Active, not recruitingNCT05382286ASCENT-04Updated Sep 18, 2025

Study of Sacituzumab Govitecan-hziy and Pembrolizumab Versus Treatment of Physician's Choice and Pembrolizumab in Patients With Previously Untreated, Locally Advanced Inoperable or Metastatic Triple-Negative Breast Cancer

A Phase 3 interventional study of Sacituzumab Govitecan-hziy and Pembrolizumab in Triple Negative Breast Cancer and PD-L1 Positive, sponsored by Gilead Sciences. Active, not recruiting at 504 sites in 28 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-09-18.

Sponsored by Gilead Sciences · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
443
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The primary objective of this study is to compare the progression-free survival (PFS) between sacituzumab govitecan-hziy (SG) and pembrolizumab versus treatment of physician's choice (TPC) and pembrolizumab in participants with previously untreated, locally advanced inoperable or metastatic triple-negative breast cancer, whose tumors express programmed cell death ligand 1 (PD-L1).

02

Conditions studied

  • Triple Negative Breast Cancer
  • PD-L1 Positive
03

In context

Triple Negative Breast Neoplasms

1,140 studies on the registry are indexed under Triple Negative Breast Neoplasms; 443 are open to participants now.

This study's enrollment of 443 is above the median of 61 across 982 interventional studies indexed under Triple Negative Breast Neoplasms.

Browse Triple Negative Breast Neoplasms studies →

Lead sponsor

Gilead Sciences is the lead sponsor of 680 studies on the registry; 24 are open to participants now.

Of its 259 completed or terminated interventional studies of FDA-regulated products, 249 (96%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Key Inclusion Criteria:

  • Individuals with locally advanced, inoperable, or metastatic triple-negative breast cancer (TNBC) who have not received previous systemic therapy for advanced disease and whose tumors are programmed cell death ligand 1 (PD-L1) positive at screening.

    • Individuals must have completed treatment for Stage I to III breast cancer, if indicated, and ≥ 6 months must have elapsed between completion of treatment with curative intent and first documented local or distant disease recurrence.
    • Individuals presenting with de novo metastatic TNBC are eligible for this study.
    • TNBC status and tumor PD-L1 combined positive score (CPS) will be confirmed centrally on a recent or archival tumor specimen.
    • Individuals must have measurable disease by computed tomography (CT) or magnetic resonance imaging (MRI) as per Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1 criteria as evaluated locally.
  • Eastern Cooperative Oncology Group (ECOG) performance status score of 0 or 1.
  • Demonstrates adequate organ function
  • Male and female individuals of childbearing potential who engage in heterosexual intercourse must agree to use protocol-specified method(s) of contraception.
  • Individuals with HIV must be on antiretroviral therapy (ART) and have a well-controlled HIV infection/disease.

Key Exclusion Criteria:

  • Positive serum pregnancy test or women who are lactating.
  • Received prior therapy with an agent directed to another stimulatory or coinhibitory T-cell receptor.
  • Individuals may not have received systemic anticancer treatment (with the exception of endocrine therapy) within the previous 6 months or radiation therapy within 2 weeks prior to enrollment.
  • Individuals may not be participating in a study with an investigational agent or investigational device within 4 weeks prior to randomization. Individuals participating in observational studies are eligible.
  • Have previously received topoisomerase 1 inhibitors or antibody drug conjugates containing a topoisomerase inhibitor.
  • Have an active second malignancy.
  • Have active serious infection requiring antibiotics.
  • Individuals positive for HIV-1 or 2 with a history of Kaposi sarcoma and/or Multicentric Castleman Disease.
  • Have active hepatitis B virus (HBV) or hepatitis C virus (HCV) infection.
  • Has an active autoimmune disease that has required systemic treatment in the past 2 years.

Note: Other protocol defined Inclusion/Exclusion criteria may apply.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
443 participants (actual)

Study arms

  • Experimental
    Sacituzumab Govitecan-hziy (SG) + Pembrolizumab

    Participants will receive SG 10 mg/kg on Days 1 and 8 of 21-day cycles and pembrolizumab 200 mg on Day 1 of 21-day cycles Pembrolizumab will be administered for a maximum of 35 cycles.

    Drug: Sacituzumab Govitecan-hziy · Drug: Pembrolizumab

  • Active comparator
    Pembrolizumab + Treatment of Physician's Choice (TPC)

    Participants will receive pembrolizumab 200 mg on Day 1 of each 21-day cycle (maximum 35 cycles) plus TPC determined prior to randomization from 1 of the 3 allowed regimens: * Paclitaxel 90 mg/m\^2 on Days 1, 8, and 15 of 28-day cycles * nab-Paclitaxel 100 mg/m\^2 on Days 1, 8, and 15 of 28-day cycles * Gemcitabine 1000 mg/m\^2 + carboplatin area under the curve (AUC) 2 on Days 1 and 8 of 21-day cycles

    Drug: Pembrolizumab · Drug: Paclitaxel · Drug: nab-Paclitaxel · Drug: Gemcitabine · Drug: Carboplatin

Interventions

  • DrugSacituzumab Govitecan-hziy

    Administered intravenously

    Also known as: IMMU-132, Trodelvy™, GS-0132

  • DrugPembrolizumab

    Administered intravenously

    Also known as: KEYTRUDA®

  • DrugPaclitaxel

    Administered intravenously

    Also known as: Taxol®

  • Drugnab-Paclitaxel

    Administered intravenously

    Also known as: Abraxane®

  • DrugGemcitabine

    Administered intravenously

    Also known as: Gemzar

  • DrugCarboplatin

    Administered intravenously

06

What researchers measure

Primary outcomes

  1. Progression-free Survival (PFS) as Assessed by Blinded Independent Central Review (BICR) per Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1

    PFS is defined as the time from the date of randomization until the date of objective progressive disease (PD) or death (whichever comes first).

    Time frame: Randomization up to approximately 33 months

Secondary outcomes

  1. Overall Survival (OS)

    OS is defined as the time from the date of randomization until death due to any cause.

    Time frame: Randomization up to approximately 53 months

  2. Objective Response Rate (ORR) as Assessed by BICR per RECIST Version 1.1

    ORR is defined as the proportion of participants who achieve complete response (CR) or partial response (PR) that is confirmed at least 4 weeks after initial documentation of response.

    Time frame: Randomization up to approximately 53 months

  3. Duration of Response (DOR) as Assessed by BICR per RECIST Version 1.1

    DOR is defined as the time from the first documentation of CR or PR to the earlier of the first documentation of objective PD or death from any cause (whichever comes first).

    Time frame: Randomization up to approximately 53 months

  4. Time to Response (TTR) as Assessed by BICR per RECIST Version 1.1

    TTR is defined as the time from the date of randomization until the first documentation of CR or PR.

    Time frame: Randomization up to approximately 53 months

  5. Percentage of Participants Experiencing Treatment-emergent Adverse Events (TEAEs)

    Time frame: First dose date up to 53 months plus 30 days

  6. Percentage of Participants Experiencing Clinical Laboratory Abnormalities

    Time frame: First dose date up to 53 months plus 30 days

  7. Time to Deterioration (TTD) in Global Health Status/Quality of Life (QoL) Scale as Measured by the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire, Core Questionnaire, Version 3.0 (EORTC QLQ-C30)

    The EORTC QLQ-C30 is a questionnaire to assess quality of life of cancer patients, it is composed of 30 questions (items) resulting in 5 functional scales, 1 global health status scale, 3 symptom scales, and 6 single items. Scoring of the QLQ-C30 is performed according to QLQ-C30 Scoring manual. All of the scales and single-item measures range in score from 0 to 100. Higher score for the functioning scales and global health status denote a better level of functioning (i.e. a better state of the participant), while higher scores on the symptom and single-item scales indicate a higher level of symptoms (i.e. a worse state of the participant).

    Time frame: Randomization up to approximately 53 months

  8. TTD of Pain Score as Measured by EORTC QLQ-C30

    The EORTC QLQ-C30 is a questionnaire to assess quality of life of cancer patients, it is composed of 30 questions (items) resulting in 5 functional scales, 1 global health status scale, 3 symptom scales, and 6 single items. Scoring of the QLQ-C30 is performed according to QLQ-C30 Scoring manual. All of the scales and single-item measures range in score from 0 to 100. Higher score for the functioning scales and global health status denote a better level of functioning (i.e. a better state of the participant), while higher scores on the symptom and single-item scales indicate a higher level of symptoms (i.e. a worse state of the participant).

    Time frame: Randomization up to approximately 53 months

  9. TTD of Fatigue Score as Measured by EORTC QLQ-C30

    The EORTC QLQ-C30 is a questionnaire to assess quality of life of cancer patients, it is composed of 30 questions (items) resulting in 5 functional scales, 1 global health status scale, 3 symptom scales, and 6 single items. Scoring of the QLQ-C30 is performed according to QLQ-C30 Scoring manual. All of the scales and single-item measures range in score from 0 to 100. Higher score for the functioning scales and global health status denote a better level of functioning (ie, a better state of the participant), while higher scores on the symptom and single-item scales indicate a higher level of symptoms (ie, a worse state of the participant).

    Time frame: Randomization up to approximately 53 months

  10. TTD of Physical Functioning Domain Score as Measured by EORTC QLQ-C30

    The EORTC QLQ-C30 is a questionnaire to assess quality of life of cancer patients, it is composed of 30 questions (items) resulting in 5 functional scales, 1 global health status scale, 3 symptom scales, and 6 single items. Scoring of the QLQ-C30 is performed according to QLQ-C30 Scoring manual. All of the scales and single-item measures range in score from 0 to 100. Higher score for the functioning scales and global health status denote a better level of functioning (ie, a better state of the participant), while higher scores on the symptom and single-item scales indicate a higher level of symptoms (ie, a worse state of the participant).

    Time frame: Randomization up to approximately 53 months

  11. TTD of Role Functioning Score as Measured by EORTC QLQ-C30

    The EORTC QLQ-C30 is a questionnaire to assess quality of life of cancer patients, it is composed of 30 questions (items) resulting in 5 functional scales, 1 global health status scale, 3 symptom scales, and 6 single items. Scoring of the QLQ-C30 is performed according to QLQ-C30 Scoring manual. All of the scales and single-item measures range in score from 0 to 100. Higher score for the functioning scales and global health status denote a better level of functioning (ie, a better state of the participant), while higher scores on the symptom and single-item scales indicate a higher level of symptoms (ie, a worse state of the participant).

    Time frame: Randomization up to approximately 53 months

07

Study locations

504 sites
  • Alaska Oncology and Hematology
    Anchorage, Alaska 99508, United States
  • Arizona Oncology Associates, PC-Hope,1845 W Orange Grove Rd
    Tucson, Arizona 85704, United States
  • Arizona Oncology Associates, PC-Hope,2070 W. Rudasill Rd.
    Tucson, Arizona 85704, United States
  • Arizona Oncology Associates, PC-Hope
    Tucson, Arizona 85711, United States
  • Arizona Oncology Associates, PC-Hope,1620 West St. Mary's Road
    Tucson, Arizona 85745, United States
  • Genesis Cancer and Blood Institute
    Hot Springs, Arkansas 71913, United States
  • Genesis Cancer and Blood Institute,1456 Higdon Ferry Road Suite B.
    Hot Springs, Arkansas 71914, United States
  • Saint Bernards Medical Center
    Jonesboro, Arkansas 72401, United States
  • Saint Bernards Medical Center,4000 Linwood Drive
    Paragould, Arkansas 72450, United States
  • University of California Los Angeles - Jonsson Comprehensive Cancer Center,201 S. Buena Vista Street, Suite 200
    Burbank, California 91505, United States
  • University of California Irvine Health Chao Family,1640 Newport Blvd
    Costa Mesa, California 92627, United States
  • City of Hope
    Duarte, California 91010, United States
  • University of California San Diego Moores Cancer
    La Jolla, California 92093, United States
  • University of California Los Angeles - Jonsson Comprehensive Cancer Center,24302 Paseo de Valencia, Suite 200
    Laguna Hills, California 91505, United States
  • Cancer and Blood Specialty Clinic
    Los Alamitos, California 90720, United States
  • City of Hope,1601 Avocado Ave
    Newport, California 92660, United States
  • University of California Irvine Health Chao Family
    Orange, California 92868, United States
  • City of Hope,209 Fair Oaks Ave
    Pasadena, California 91030, United States
  • University of California Los Angeles - Jonsson Comprehensive Cancer Center,892 Aerovista Place, Suite 240
    San Luis Obispo, California 93401, United States
  • Sansum Clinic
    Santa Barbara, California 93105, United States
  • University of California Los Angeles - Jonsson Comprehensive Cancer Center,2020 Santa Monica Blvd, Suite 600
    Santa Monica, California 90404, United States
  • University of California Los Angeles - Jonsson Comprehensive Cancer Center,2336 Santa Monica, Suites 302 and 304
    Santa Monica, California 90404, United States
  • University of California Los Angeles - Jonsson Comprehensive Cancer Center
    Santa Monica, California 90404, United States
  • St. Jude Hospital Yorba dba St. Joseph Heritage Healthcare
    Santa Rosa, California 95403, United States
  • Sansum Clinic,2040 Viborg Road
    Solvang, California 93463, United States
  • City of Hope,5215 Torrance Blvd
    Torrance, California 90503, United States
  • Torrance Memorial Physician Network - Cancer Care
    Torrance, California 90505, United States
  • City of Hope,1100 San Bernardino Rd
    Upland, California 91786, United States
  • University of California Los Angeles - Jonsson Comprehensive Cancer Center,1250 La Venta Dr, Suite 100
    Westlake Village, California 91361, United States
  • Rocky Mountain Cancer Centers,1700 South Potomac Street
    Aurora, Colorado 80012, United States
  • Rocky Mountain Cancer Centers
    Boulder, Colorado 80303, United States
  • Rocky Mountain Cancer Centers,2312 N. Nevada Avenue
    Colorado Springs, Colorado 80907, United States
  • Rocky Mountain Cancer Centers,6031 E. Woodman Rd.
    Colorado Springs, Colorado 80923, United States
  • Rocky Mountain Cancer Centers,4700 E. Hale Parkway
    Denver, Colorado 80220, United States
  • Rocky Mountain Cancer Centers,11750 West 2nd Place
    Lakewood, Colorado 80228, United States
  • Rocky Mountain Cancer Centers,22 West Dry Creek Circle
    Littleton, Colorado 80120, United States
  • Rocky Mountain Cancer Centers,10107 Ridge Gate Parkway
    Lone Tree, Colorado 80124, United States
  • Rocky Mountain Cancer Centers,2030 Mountain View Ave Ste 210
    Longmont, Colorado 80124, United States
  • Rocky Mountain Cancer Centers,3676 Parker Blvd
    Pueblo, Colorado 81008, United States
  • Rocky Mountain Cancer Centers,525 W. 15th Street
    Pueblo, Colorado 81008, United States
  • Rocky Mountain Cancer Centers,8820 Huron Street
    Thornton, Colorado 80260, United States
  • Eastern Connecticut Hematology and Oncology Associates
    Norwich, Connecticut 06360, United States
  • Advent Health Medical Group
    Altamonte Springs, Florida 32701, United States
  • SCRI - Florida Cancer Specialists - North Region R,750 Orienta Ave
    Altamonte Springs, Florida 32701, United States
  • University of Miami - Sylvester Comprehensive Cancer Center,2801 NE 213th St
    Aventura, Florida 33180, United States
  • Florida Cancer Specialists,9776 Bonita Beach Road Southeast Suite 201 A
    Bonita Springs, Florida 34135, United States
  • Florida Cancer Specialists,3630 Manatee Avenue West
    Bradenton, Florida 34205, United States
  • Florida Cancer Specialists,5985 Silver Falls Run
    Bradenton, Florida 34211, United States
  • SCRI - Florida Cancer Specialists - North Region R,403 S. Kings Ave.
    Brandon, Florida 33511, United States
  • Florida Cancer Specialists,1030 Commerce Creek Blvd
    Cape Coral, Florida 33909, United States
  • SCRI - Florida Cancer Specialists - North Region R,3280 McMullen Booth Road
    Clearwater, Florida 33761, United States
  • University of Miami - Sylvester Comprehensive Cancer Center,5555 Ponce De Leon Blvd
    Coral Gables, Florida 33146, United States
  • SCRI - Florida Cancer Specialists - West Palm Beach,224 Memorial Medical Parkway, Suite 300
    Daytona Beach, Florida 32117, United States
  • University of Miami - Sylvester Comprehensive Cancer Center,1192 East Newport Center Drive
    Deerfield Beach, Florida 33442, United States
  • Florida Cancer Specialists
    Fort Myers, Florida 33901, United States
  • Florida Cancer Specialists,8981 Colonial Center Drive
    Fort Myers, Florida 33905, United States
  • Florida Cancer Specialists,8260 Gladiolus Dr
    Fort Myers, Florida 33908, United States
  • SCRI - Florida Cancer Specialists - North Region R,6420 W. Newberry Road
    Gainesville, Florida 32605, United States
  • University of Miami - Sylvester Comprehensive Cancer Center,3850 Hollywood Blvd
    Hollywood, Florida 33021, United States
  • SCRI - Florida Cancer Specialists - North Region R,100 Highland Avenue
    Largo, Florida 33770, United States
  • SCRI - Florida Cancer Specialists - North Region R,521 North Lecanto Highway
    Lecanto, Florida 34461, United States
  • University of Miami - Sylvester Comprehensive Cancer Center,1400 NW 12th Ave
    Miami, Florida 33136, United States
  • University of Miami - Sylvester Comprehensive Cancer Center
    Miami, Florida 33136, United States
  • University of Miami - Sylvester Comprehensive Cancer Center,8932 S.W. 97 Ave
    Miami, Florida 33176, United States
  • Florida Cancer Specialists,1100 Goodlette Road
    Naples, Florida 34102, United States
  • SCRI - Florida Cancer Specialists - North Region R,4945 SW 49th Place
    Ocala, Florida 34474, United States
  • SCRI - Florida Cancer Specialists - North Region R,2824 Enterprise Rd
    Orange City, Florida 32763, United States
  • Advent Health Medical Group,2501 North Orange Ave
    Orlando, Florida 32804, United States
  • SCRI - Florida Cancer Specialists - North Region R,70 W. Gore Street
    Orlando, Florida 32806, United States
  • University of Miami - Sylvester Comprehensive Cancer Center,8100 SW 10 Street
    Plantation, Florida 33324, United States
  • Florida Cancer Specialists,22395 Edgewater Drive
    Port Charlotte, Florida 33980, United States
  • Florida Cancer Specialists,600 North Cattlemen Road
    Sarasota, Florida 34232, United States
  • Florida Cancer Specialists,1970 Golf Street
    Sarasota, Florida 34236, United States
  • SCRI - Florida Cancer Specialists - North Region R,7154 Medical Center Drive
    Spring Hill, Florida 34608, United States
  • SCRI - Florida Cancer Specialists - North Region R,1201 Fifth Avenue North
    St. Petersburg, Florida 33705, United States
  • SCRI - Florida Cancer Specialists - North Region R
    St. Petersburg, Florida 33705, United States
  • SCRI - Florida Cancer Specialists - West Palm Beach,301 SE Ocean Blvd, Suite 102
    Stuart, Florida 34994, United States
  • SCRI - Florida Cancer Specialists - North Region R,3402 West Dr. Martin Luther King Jr. Boulevard
    Tampa, Florida 33607, United States
  • SCRI - Florida Cancer Specialists - North Region R,4100 Waterman Way
    Tavares, Florida 32778, United States
  • SCRI - Florida Cancer Specialists - North Region R,1400 US Highway 441 N
    The Villages, Florida 32159, United States
  • SCRI - Florida Cancer Specialists - North Region R,9320 State Road 54
    Trinity, Florida 34655, United States
  • Florida Cancer Specialists,836 Sunset Lake Blvd
    Venice, Florida 34292, United States
  • SCRI - Florida Cancer Specialists - West Palm Beach,3730 7th Terrace, Suite 101
    Vero Beach, Florida 32960, United States
  • SCRI - Florida Cancer Specialists - West Palm Beach,1037 S. State Road 7, Bldg B, Suite 303
    Wellington, Florida 33414, United States
  • SCRI - Florida Cancer Specialists - West Palm Beach
    West Palm Beach, Florida 33401, United States
  • SCRI - Florida Cancer Specialists - North Region R,460 N Orlando Ave
    Winter Park, Florida 32789, United States
  • Northside Hospital,125 King Avenue
    Athens, Georgia 30606, United States
  • Piedmont Cancer Institute - Atlanta,1267 Hwy 54W
    Atlanta, Georgia 30214, United States
  • Winship Cancer Institute of Emory University,550 Peachtree St NE
    Atlanta, Georgia 30308, United States
  • Piedmont Cancer Institute - Atlanta
    Atlanta, Georgia 30318, United States
  • Winship Cancer Institute of Emory University
    Atlanta, Georgia 30322, United States
  • Northside Hospital,5670 Peachtree Dunwoody Rd.
    Atlanta, Georgia 30342, United States
  • Northside Hospital
    Atlanta, Georgia 30342, United States
  • Winship Cancer Institute of Emory University,5665 Peachtree Dunwoody Road
    Atlanta, Georgia 30342, United States
  • Northside Hospital,308 Deep South Farm Rd, Suite 200
    Blairsville, Georgia 30512, United States
  • Northside Hospital,228 Riverstone Dr.
    Canton, Georgia 30114, United States
  • Northside Hospital,1505 Northside Blvd, Suite 4600
    Cumming, Georgia 30041, United States
  • Northside Hospital,3855 Pleasant Hill Rd., Suite 480
    Duluth, Georgia 30096, United States
  • Northside Hospital,308 Coliseum Dr.
    Macon, Georgia 31217, United States
  • Piedmont Cancer Institute - Atlanta,775 Poplar Road
    Newnan, Georgia 30265, United States

Showing the first 100 of 504 sites across 28 countries.

08

References and documents

Publications

  • Tolaney SM, de Azambuja E, Kalinsky K, Loi S, Kim SB, Yam C, Rapoport B, Im SA, Pistilli B, Mchayleh W, Cescon DW, Watanabe J, Banuelas MAL, Freitas-Junior R, Salvador Bofill J, Afshari M, Gary D, Wang L, Lai C, Schmid P; ASCENT-04/KEYNOTE-D19 Clinical Trial Investigators. Sacituzumab Govitecan plus Pembrolizumab for Advanced Triple-Negative Breast Cancer. N Engl J Med. 2026 Jan 22;394(4):354-366. doi: 10.1056/NEJMoa2508959. PubMed 41564397 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 18, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05382286
Lead sponsor
Gilead Sciences
Collaborators
Merck Sharp & Dohme LLC
Responsible party
Sponsor
First posted
May 19, 2022
Start date
Jul 25, 2022
Primary completion
Feb 2027 (estimated)
Completion
Feb 2027 (estimated)
Last update
Sep 18, 2025

Study contacts

Gilead Study Director
study director · Gilead Sciences

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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