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Trial details imported from ClinicalTrials.gov

For full trial details, please see the original record at https://clinicaltrials.gov/study/NCT06926920




Registration number
NCT06926920
Ethics application status
Date submitted
8/04/2025
Date registered
15/04/2025
Date last updated
16/07/2025

Titles & IDs
Public title
A Study of Sacituzumab Govitecan Given at an Alternative Dose and Schedule in Participants With Advanced Triple-Negative Breast Cancer
Scientific title
A Phase 1/2, Open-label Study of Sacituzumab Govitecan Administered at an Alternative Dose and Schedule in Participants With Advanced Triple-Negative Breast Cancer
Secondary ID [1] 0 0
2024-519124-25
Secondary ID [2] 0 0
GS-US-576-7321
Universal Trial Number (UTN)
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Triple Negative Breast Cancer 0 0
Condition category
Condition code
Cancer 0 0 0 0
Breast

Intervention/exposure
Study type
Interventional
Description of intervention(s) / exposure
Treatment: Drugs - Sacituzumab Govitecan-hziy (SG)

Experimental: Phase 1 - Participants will receive SG until progressive disease (PD), death, unacceptable toxicity, or another treatment discontinuation criterion is met.

Experimental: Phase 2: Expansion - Participants will receive SG until PD, death, unacceptable toxicity, or another treatment discontinuation criterion is met.


Treatment: Drugs: Sacituzumab Govitecan-hziy (SG)
Administered intravenously

Intervention code [1] 0 0
Treatment: Drugs
Comparator / control treatment
Control group

Outcomes
Primary outcome [1] 0 0
Phase 1: Percentage of Participants Experiencing Dose-Limiting Toxicities (DLTs)
Timepoint [1] 0 0
First dose up to 28 days
Primary outcome [2] 0 0
Phase 1 and 2: Percentages of Participants Experiencing Adverse Events (AEs)
Timepoint [2] 0 0
First dose up to 30 days post last dose (Up to 3 years)
Primary outcome [3] 0 0
Phases 1 and 2: Percentages of Participants Experiencing Laboratory Abnormalities
Timepoint [3] 0 0
First dose up to 30 days post last dose (Up to 3 years).
Primary outcome [4] 0 0
Phases 1 and 2: Percentages of Participants Experiencing AEs Leading to Dose Reductions, Dose Interruptions, and Treatment Discontinuations
Timepoint [4] 0 0
First dose up to 30 days post last dose (Up to 3 years).
Primary outcome [5] 0 0
Phases 1 and 2: Objective Response Rate (ORR)
Timepoint [5] 0 0
Up to 9 months
Primary outcome [6] 0 0
Phase 2: Progression-Free Survival (PFS)
Timepoint [6] 0 0
Up to 9 months
Secondary outcome [1] 0 0
Phases 1 and 2: Serum Concentrations of SG
Timepoint [1] 0 0
Up to End of Treatment (3 years)
Secondary outcome [2] 0 0
Phase 1 and 2: Percentage of Participants who Develop Antidrug Antibodies (ADAs) Against SG
Timepoint [2] 0 0
First dose up to 30 days post last dose (Up to 3 years).
Secondary outcome [3] 0 0
Phase 2: Duration of Response (DOR)
Timepoint [3] 0 0
First dose up to 30 days post last dose (Up to 3 years).
Secondary outcome [4] 0 0
Phase 2: Disease Control Rate (DCR)
Timepoint [4] 0 0
Up to 9 months

Eligibility
Key inclusion criteria
Key

* Individuals assigned male or female at birth, 18 years of age or older, able to understand and give written informed consent.
* Histologically or cytologically locally confirmed TNBC.
* Phase 1: Individuals with unresectable, locally advanced or metastatic TNBC who are refractory to or relapsed after at least one prior standard-of-care chemotherapy regimen or systemic therapy given for locally advanced or metastatic disease.
* Phase 2: Individuals with unresectable, locally advanced or metastatic TNBC who have not received previous systemic therapy for advanced disease.
* Phase 2: Tumors must be PD-L1 negative, defined as tumor PD-L1 combined positive score (CPS) < 10 using the PD-L1 immunohistochemistry (IHC) 22C3 assay. Alternatively, individuals with tumor CPS = 10 will be eligible if they received an anti-PD-(L)1 agent (ie, checkpoint inhibitor) in the adjuvant or neoadjuvant setting or if they cannot be treated with an anti-PD-(L)1 agent. due to a comorbidity.
* Uridine diphosphate glucuronosyltransferase 1A1 (UGT1A1) genotype status.

During Phase 1 safety run-in, individuals must be UGT1A1 wild-type.

After Phase 1 safety run-in, individuals with any UGT1A1 genotype may be eligible.

* Measurable disease by computed tomography (CT) or magnetic resonance imaging (MRI) according to RECIST Version 1.1 criteria.
* Eastern Cooperative Oncology Group (ECOG) performance status score of 0 or 1.
* Adequate hematologic counts within 2 weeks prior to enrollment.
* Adequate hepatic and renal function.

Key
Minimum age
18 Years
Maximum age
No limit
Sex
Both males and females
Can healthy volunteers participate?
No
Key exclusion criteria
* Prior treatment with a topoisomerase 1 inhibitor or antibody-drug conjugate (ADC) containing a topoisomerase inhibitor.
* Prior treatment with a trophoblast cell-surface antigen 2 (Trop-2)-directed ADC.

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

Study design
Purpose of the study
Treatment
Allocation to intervention
Non-randomised trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Masking / blinding
Open (masking not used)
Who is / are masked / blinded?



Intervention assignment
Other
Other design features
Phase
Phase 1
Type of endpoint/s
Statistical methods / analysis

Recruitment
Recruitment status
Recruiting
Data analysis
Reason for early stopping/withdrawal
Other reasons
Date of first participant enrolment
Anticipated
Actual
Date of last participant enrolment
Anticipated
Actual
Date of last data collection
Anticipated
Actual
Sample size
Target
Accrual to date
Final
Recruitment in Australia
Recruitment state(s)
NSW
Recruitment hospital [1] 0 0
St. Vincent's Hospital - Kinghorn Cancer Center - Darlinghurst
Recruitment postcode(s) [1] 0 0
2010 - Darlinghurst
Recruitment outside Australia
Country [1] 0 0
United States of America
State/province [1] 0 0
California
Country [2] 0 0
United States of America
State/province [2] 0 0
Tennessee
Country [3] 0 0
Korea, Republic of
State/province [3] 0 0
Seoul

Funding & Sponsors
Primary sponsor type
Commercial sector/industry
Name
Gilead Sciences
Address
Country

Ethics approval
Ethics application status

Summary
Brief summary
Trial website
Trial related presentations / publications
Public notes

Contacts
Principal investigator
Name 0 0
Gilead Study Director
Address 0 0
Gilead Sciences
Country 0 0
Phone 0 0
Fax 0 0
Email 0 0
Contact person for public queries
Name 0 0
Gilead Clinical Study Information Center
Address 0 0
Country 0 0
Phone 0 0
1-833-445-3230 (GILEAD-0)
Fax 0 0
Email 0 0
Contact person for scientific queries

Data sharing statement


What supporting documents are/will be available?

No Supporting Document Provided


Results publications and other study-related documents

No documents have been uploaded by study researchers.