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Active, not recruitingNCT05840211ASCENT-07Updated Oct 3, 2025

Study of Sacituzumab Govitecan Versus Treatment of Physician's Choice in Patients With Hormone Receptor-positive/Human Epidermal Growth Factor Receptor 2 Negative (HR+/HER2-) Metastatic Breast Cancer Who Have Received Endocrine Therapy

A Phase 3 interventional study of Sacituzumab Govitecan-hziy and Paclitaxel in Locally Advanced or Unresectable Metastatic Breast Cancer and Stage IV Breast Cancer, sponsored by Gilead Sciences. Active, not recruiting at 288 sites in 28 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-10-03.

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

Phase
Phase 3
Study type
Interventional
Enrollment
654
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The goal of this clinical study is to see if sacituzumab govitecan-hziy (SG) can improve life spans of people with HR+/HER2- metastatic breast cancer and their tumor does not grow or spread when compared to currently available standard treatments, such as paclitaxel, nab-paclitaxel or capecitabine. The primary objective is to compare the effect of SG relative to the treatment of physician's choice (TPC) on progression-free survival (PFS).

02

Conditions studied

  • Locally Advanced or Unresectable Metastatic Breast Cancer
  • Stage IV Breast Cancer

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03

In context

Breast Neoplasms

12,544 studies on the registry are indexed under Breast Neoplasms; 2,892 are open to participants now.

This study's planned enrollment of 654 is above the median of 72 across 9,302 interventional studies indexed under Breast Neoplasms.

Browse 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:

  • Able to understand and give written informed consent.
  • Must have adequate tumor tissue sample preferably from locally recurrent or metastatic site.
  • Documented evidence of HR+ metastatic breast cancer (mBC) confirmed with the most recently available tumor biopsy preferably from a locally recurrent or metastatic site.
  • Documented evidence of HER2- status.
  • Documented PD by computed tomography (CT) or magnetic resonance imaging during or after the most recent therapy per RECIST v1.1 criteria.
  • Candidate for the first chemotherapy in the locally advanced or metastatic setting.
  • Eligible for capecitabine, nab-paclitaxel, or paclitaxel.
  • Individuals must have at least one of the following:

    • Disease progression on at least 2 or more previous lines of endocrine therapy (ET) with or without a targeted therapy in the metastatic setting.

      • Disease recurrence while on the first 24 months of starting adjuvant ET will be considered a line of therapy; these individuals will only require 1 line of ET in the metastatic setting.
    • Disease progression within 6 months of starting first-line ET with or without a cyclin-dependent kinase (CDK) 4/6 inhibitor (if ineligible or if unable to access a CDK 4/6 inhibitor) in the metastatic setting.
    • Disease recurrence while on the first 24 months of starting adjuvant ET with CDK 4/6 inhibitor and if the individual is no longer a candidate for additional ET in the metastatic setting.
  • Individuals may have received prior targeted therapies, including but not limited to PARP inhibitors (for those with germline BRCA1 or BRCA2 mutations), phosphatidylinositol 3-kinase (PI3K) inhibitors (for those with PIK3CA mutations), or mammalian target of rapamycin (mTOR) inhibitors. However, individuals can no longer be candidates for additional endocrine treatment with or without targeted therapies.
  • Individuals with HIV must be on antiretroviral therapy (ART) and have a well-controlled HIV infection/disease.
  • Demonstrates adequate organ function.
  • Male individuals and female individuals of childbearing potential who engage in heterosexual intercourse must agree to use protocol-specified method(s) of contraception.
  • Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.

Key Exclusion Criteria:

  • Progressive disease within 6 months of completing (neo)adjuvant chemotherapy.
  • Locally advanced metastatic breast cancer (mBC) (Stage IIIc) in individuals who are candidates for curative intent therapy at the time of study enrollment.
  • Current enrollment in another clinical study and use of any investigational device or drug (drugs not marketed for any indication) either within 5 half-lives or 28 days prior to randomization, whichever is longer.

    • Use of investigational drugs in the category of Selective Estrogen Receptor Degraders are acceptable if last dose was longer than 14 days prior to randomization.
  • Received any prior treatment (including antibody-drug conjugate (ADC)) containing a chemotherapeutic agent targeting topoisomerase I.
  • Received any prior treatment with a trophoblast cell-surface antigen 2 (Trop-2)-directed ADC.
  • Have an active second malignancy.
  • Have an active serious infection requiring antibiotics.
  • Have active hepatitis B virus (HBV) or hepatitis C virus (HCV).
  • Individuals positive for human immunodeficiency virus type 1/2 (HIV-1 or -2) with a history of Kaposi sarcoma and/or Multicentric Castleman Disease.
  • Have a positive serum pregnancy test or are breastfeeding for individuals who are assigned female at birth.

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
654 participants (estimated)

Study arms

  • Experimental
    Sacituzumab Govitecan-hziy (SG)

    Participants will receive SG at a dose of 10 mg/kg infusion on Days 1 and 8 of a 21-day cycle.

    Drug: Sacituzumab Govitecan-hziy

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

    Participants will receive TPC determined prior to randomization to 1 of the 3 allowed regimens: * paclitaxel 80 mg/m\^2 over 1 hour (± 10 minutes) on Days 1, 8, and 15 of a 28-day cycle. * nab-Paclitaxel 100 mg/m\^2 over 30 minutes (± 10 minutes) on Days 1, 8, and 15 of a 28-day cycle. * capecitabine at 1000-1250 mg/m\^2 twice daily for 2 weeks followed by a 1-week rest period of a 21-day cycle.

    Drug: Paclitaxel · Drug: Nab-paclitaxel · Drug: Capecitabine

Interventions

  • DrugSacituzumab Govitecan-hziy

    Administered intravenously

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

  • DrugPaclitaxel

    Administered intravenously

    Also known as: Taxol®

  • DrugNab-paclitaxel

    Administered intravenously

    Also known as: Abraxane®

  • DrugCapecitabine

    Administered orally

    Also known as: Xeloda®

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 Version 1.1 (RECIST v1.1)

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

    Time frame: Up to approximately 29 months

Secondary outcomes

  1. Overall Survival (OS)

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

    Time frame: Until death, up to approximately 60 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 a complete response (CR) or partial response (PR) that is confirmed at least 4 weeks after initial documentation of response.

    Time frame: Until progression, up to approximately 60 months

  3. Change from Baseline in the Physical Functioning Domain Using European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire Version 3.0 (EORTC QLQ-C30) at Week 16

    The EORTC QLQ-C30 is composed of global health status/QoL scale; five functional domains (physical, role, emotional, cognitive, and social); three symptom domains (fatigue, nausea and vomiting, and pain); and six single items (dyspnea, insomnia, appetite loss, constipation, diarrhea, and financial difficulties). The Physical Functioning domain includes 5 questions in which participants will be asked to rate their overall health and overall quality of life as it relates to physical functioning during the past week on a scale from 1 (very poor) to 4 (excellent), with a higher score representing a high QoL.

    Time frame: Baseline, Week 16

  4. Time to Deterioration in Version 3.0 EORTC-QLQ-C30 Scores

    Time to deterioration from baseline in European Organisation for the Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) scores. Scale scores range from 0-100. For functioning and global health status/QoL scales, higher scores indicate better functioning or global health status/QoL. For symptom scales, higher scores indicate greater symptom burden.

    Time frame: Up to approximately 60 months

  5. Progression Free Survival (PFS) as Assessed by Investigator per Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST v1.1)

    PFS is defined as time from date of randomization until the date of first objective progressive disease (PD) by investigator assessment according to RECIST v1.1 or death from any cause, whichever comes first.

    Time frame: Until progression or death, up to approximately 60 months

  6. Objective Response Rate (ORR) as Assessed by Investigator per RECIST Version 1.1

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

    Time frame: Up to approximately 60 months

  7. Duration of Response (DOR) as Assessed by BICR and Investigator 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: Until progression or death, up to approximately 60 months

  8. Percentage of Participants Experiencing Treatment-emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)

    Time frame: First dose date up to 30 days post last dose, up to approximately 60 months

  9. Percentage of Participants Experiencing Clinically Significant Laboratory and/or Vital Sign Abnormalities

    Time frame: First dose date up to 30 days post last dose, up to approximately 60 months

07

Study locations

288 sites
  • Ironwood Physicians P.C. dba Ironwood Cancer and Research Centers
    Chandler, Arizona 85224, United States
  • Los Angeles Hematology Oncology Medical Group
    Los Angeles, California 90017, United States
  • Stanford Cancer Institute
    Palo Alto, California 94305, United States
  • University of California, San Francisco (UCSF) Helen Diller Family Comprehensive Cancer Center
    San Francisco, California 94143, United States
  • Rocky Mountain Cancer Centers, LLP
    Littleton, Colorado 80120, United States
  • Yale-New Haven Hospital-Yale Cancer Center
    New Haven, Connecticut 06510, United States
  • Investigational Drug Services, AdventHealth Orlando
    Altamonte Springs, Florida 32701, United States
  • Florida Cancer Specialists
    Brooksville, Florida 34613, United States
  • Florida Cancer Specialist
    Leesburg, Florida 34748, United States
  • Florida Cancer Specialist
    St. Petersburg, Florida 33705, United States
  • Piedmont Cancer Institute
    Atlanta, Georgia 30318, United States
  • Georgia Cancer Specialist - Annex
    Atlanta, Georgia 30341, United States
  • Northwest Georgia Oncology Centers
    Marietta, Georgia 30060, United States
  • The University of Kansas Hospital
    Kansas City, Kansas 66160, United States
  • Hematology Oncology Clinic
    Baton Rouge, Louisiana 70809, United States
  • Saint Luke's Cancer Institute
    Kansas City, Missouri 64110, United States
  • David C. Pratt Cancer Center
    St Louis, Missouri 63141, United States
  • Astera Cancer Care
    East Brunswick, New Jersey 08816, United States
  • Rutgers Cancer Institute of New Jersey
    New Brunswick, New Jersey 08901, United States
  • Memorial Sloan-Kettering Cancer Center (MSKCC) - New York
    New York, New York 10065, United States
  • Cleveland Clinic
    Cleveland, Ohio 44195, United States
  • Stefanie Spielman Comprehensive Breast Center
    Columbus, Ohio 43210, United States
  • Penn State Cancer Institute
    Hershey, Pennsylvania 17033, United States
  • Magee-Womens of UPMC
    Pittsburgh, Pennsylvania 15213, United States
  • Prisma Health - Upstate
    Greenville, South Carolina 29605, United States
  • Tennessee Oncology, PLLC
    Nashville, Tennessee 37203, United States
  • Vanderbilt University Medical Center - Vanderbilt-Ingram Cancer Center
    Nashville, Tennessee 37203, United States
  • US Oncology Investigational Products Center (IPC)
    Fairfax, Virginia 22031, United States
  • US Oncology Investigational Products Center (IPC)
    Norfolk, Virginia 23502, United States
  • MultiCare Regional Cancer Center - Auburn
    Auburn, Washington 98001, United States
  • Hospital Britanico de Buenos Aires
    Buenos Aires, 1426, Argentina
  • Instituto de Investigaciones Clinicas de Mar del Plata
    Buenos Aires, B7600, Argentina
  • Instituto Alexander Fleming
    C.a.b.a., 1426ANZ, Argentina
  • Hospital Alemán
    CABA, 1118, Argentina
  • Centro Privado de RMI Rio Cuarto S.A.
    Córdoba, 5800, Argentina
  • Instituto de Oncología de Rosario
    Rosario, 2000, Argentina
  • CER San Juan Centro Polivalente de Asistencia e Investigación Clínica
    San Juan, 5400, Argentina
  • Royal Brisbane and Women's Hospital
    Queensland, ME 4029, Australia
  • St Vincent's Hospital Sydney
    Darlinghurst, New South Wales 2010, Australia
  • Liverpool Hospital
    Liverpool, New South Wales 2170, Australia
  • GenesisCare North Shore (Oncology)
    St Leonards, New South Wales 2065, Australia
  • Icon Cancer Centre Wesley
    Auchenflower, Queensland 4066, Australia
  • Flinders Medical Centre
    Bedford Park, South Australia 5042, Australia
  • Icon Cancer Centre Hobart
    Hobart, Tasmania 7000, Australia
  • Austin Health
    Melbourne, Victoria 3084, Australia
  • Sunshine Hospital (Western Health)
    St Albans, Victoria 3021, Australia
  • Breast Cancer Research Centre - WA
    Nedlands, Western Australia 6009, Australia
  • University Hospital Innsbruck
    Innsbruck, 06020, Austria
  • Universitätsklinik für Innere Medizin 3 der PMU
    Salzburg, A-5020, Austria
  • Medizinische Universitat Wien, Univ. Klinik fur Innere Medizin I Klinische Abteilung fur Onkologie
    Vienna, 1090, Austria
  • Klinikum Wels-Grieskirchen
    Wels, 4710, Austria
  • GZA Ziekenhuizen - Campus Sint-Augustinus
    Antwerp, 2610, Belgium
  • AZ Klina
    Brasschaat, 2930, Belgium
  • Cliniques Universitaires Saint-Luc
    Brussels, 1200, Belgium
  • Universitaire Ziekenhuis Leuven
    Leuven, 3000, Belgium
  • CHU UCL Namur-Site STE. Elisabeth
    Namur, 5000, Belgium
  • Hospital Haroldo Juaçaba - Instituto do Câncer do Ceará
    Fortaleza, 60430-230, Brazil
  • Hospital Araujo Jorge - Associacao de Combate ao Cancer em Goias
    Goiânia, 74605-070, Brazil
  • Oncosite - Centro de Pesquisa Clinica e Oncologia
    Ijuí, 98700-000, Brazil
  • Catarina Pesquisa Clinica
    Itajaí, 88301-220, Brazil
  • Oncoclinicas do Brasil Servicos Medicos AS
    Minas Gerais, 30360-680, Brazil
  • Liga Norte-Rio-Grandense Contra o Câncer
    Natal, 59062-000, Brazil
  • CIONC-Centro Integrado de Oncologia de Curitiba
    Paraana, 80810050, Brazil
  • Hospital Erasto Gaertner
    Paraná, 81.520-060, Brazil
  • IMIP - Instituto de Medicina Integral Professor Fernando Figueira
    Pernambuco, 50070550, Brazil
  • Irmandade da Santa Casa de Misericórdia de Porto Alegre
    Porto Alegre, 90020-090, Brazil
  • Hospital de Clínicas de Porto Alegre - HCPA
    Porto Alegre, 90035-903, Brazil
  • HGB - Hospital Giovanni Battista/Mãe de Deus Center
    Porto Alegre, 90110-270, Brazil
  • Hospital São Lucas da PUCRS
    Porto Alegre, 90610001, Brazil
  • Instituto Americas
    Rio de Janeiro, 22775-001, Brazil
  • Clínica de Oncologia de Porto Alegre Ltda - CLINIONCO
    Rio Grande, 90430-090, Brazil
  • Unidade de PesquisasClinicas em Oncologia - UPCO
    Rio Grande, 96020-080, Brazil
  • Instituto do Câncer - Hospital São Vicente de Paulo
    Rio Grande, 99010-090, Brazil
  • CEPHO - Centro de Estudos e Pesquisas de Hematologia e Oncologia
    Santo André, 09060-650, Brazil
  • Instituto Hemomed Oncologia e Hematologia
    São Paulo, 01236-030, Brazil
  • Clinica de pesquisa e centro de estudos em oncologia ginecológica e mamaria
    São Paulo, 1317000, Brazil
  • BC Cancer - Kelowna
    Kelowna, V1Y 5L3, Canada
  • The Ottawa Hospital Cancer Centre
    Ottawa, K1H 8L6, Canada
  • CHU de Québec-Université Laval, Hôpital du Saint-Sacrement
    Québec, G1S 4L8, Canada
  • Humber River Hospital
    Toronto, M3M 0B2, Canada
  • BC Cancer-Victoria
    Victoria, V8R 6V5, Canada
  • Centro de Investigacion Clinica Bradford Hill
    Recoleta, Chile
  • Centro del Cancer UC
    Region Metropolitana, 7550000, Chile
  • Centro de Oncología de Precisión (COP)
    Santiago Region, 8330032, Chile
  • James Lind Centro de Investigacion del Cancer
    Temuco, Chile
  • Oncocentro APYS
    Viña del Mar, 2520612, Chile
  • The First Affiliated Hospital of USTC (Anhui Provincial Hospital)
    Anhui, 230001, China
  • Peking University People's Hospital
    Beijing, 100044, China
  • The First Hospital of Jilin University
    Changchun, 130021, China
  • Xiangya Hospital Central South University
    Changsha, 410008, China
  • West China Hospital Sichuan University
    Chengdu, 610041, China
  • Chongqing University Cancer Hospital
    Chongqing, 404100, China
  • Fujian Cancer Hospital
    Fujian, 350015, China
  • Fujian Medical University Union Hospital
    Fuzhou, 350001, China
  • Sun Yat-Sen University Cancer Center
    Guangdong, 510060, China
  • Guangdong Provincial People's Hospital
    Guangzhou, 510080, China
  • The First Affiliated Hospital of Sun Yat-sen University
    Guangzhou, 510080, China
  • Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University
    Guangzhou, 510120, China
  • Sir Run Run Shaw Hospital,Zhejiang University School of Medicine
    Hangzhou, 310000, China
  • Zhejiang Cancer Hospital
    Hangzhou, 310022, China

Showing the first 100 of 288 sites across 28 countries.

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References and documents

Publications

  • Tarantino P, Tolaney SM, Curigliano G. Trastuzumab deruxtecan (T-DXd) in HER2-low metastatic breast cancer treatment. Ann Oncol. 2023 Oct;34(10):949-950. doi: 10.1016/j.annonc.2023.07.003. Epub 2023 Jul 26. No abstract available. PubMed 37499870 ↗

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 Oct 3, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05840211
Lead sponsor
Gilead Sciences
Responsible party
Sponsor
First posted
May 3, 2023
Start date
May 8, 2023
Primary completion
Apr 2028 (estimated)
Completion
Apr 2028 (estimated)
Last update
Oct 3, 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 ↗

Not currently enrolling

This study is active, not recruiting, as verified in Sep 2025. You cannot join it, but the record below documents what was studied.

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