Evaluation of Trop-2 ADC in Breast Cancer Patients With Brain Metastases: A Real-World Study

NCT07251868 | Recruiting FDA Drug

• 1 other identifier: SG-BM-RWS
• Study Type: observational
• Target: 100
• Locations: 1 country
• Sites: 1

Brief Summary

The goal of this real-world study (RWS) is to evaluate the effectiveness of Trop-2 ADC (sacituzumab govitecan) in treating breast cancer patients with brain metastases, and to understand the safety profile of this drug in real clinical practice across multiple centers. The main questions it aims to answer are: Does Trop-2 ADC (sacituzumab govitecan) improve intracranial outcomes in breast cancer patients with brain metastases (e.g., intracranial objective response rate, intracranial progression-free survival)? What types and rates of adverse events do breast cancer patients with brain metastases experience when receiving Trop-2 ADC (sacituzumab govitecan)? This is a multicenter real-world study, which will collect and analyze data from breast cancer patients with brain metastases who have received Trop-2 ADC (sacituzumab govitecan) in routine clinical care (no randomization or placebo control, consistent with real-world clinical scenarios). Participants (breast cancer patients with brain metastases who received Trop-2 ADC) will have their data collected from: Electronic health records (EHRs) across multiple medical centers Regular clinical follow-up visits (e.g., once every 4-8 weeks) for imaging assessments (to evaluate brain metastasis changes) and safety monitoring Medical records documenting treatment responses, disease progression, and any adverse events during treatment and follow-up

Conditions

Breast Cancer; Brain Metastases From Breast Cancer; Trop2

Keywords

breast cancer; Brain metastases; Trop2; sacituzumab govitecan

Outcome Measures

Primary Outcomes (1)

• Real world progression free survival (rwPFS)

  The time interval from the date of Sacituzumab Govitecan initiation until date of progressive disease (PD) or death from any causes, whichever occurred first.

  up to 48 months from the initiation of the study treatment.

Secondary Outcomes (5)

• Real world objective response rate (rwORR)

  approximately up to 24 weeks from the initiation of the study treatment.

• Real world overall survival (rwOS)

  up to 48 months from the initiation of the study treatment.

• Number of patients with adverse events

  approximately up to 68 weeks from the initiation of the treatment.

• CNS-PFS

  Start of treatment until 2-year follow-up

• CNS-ORR

  Start of treatment until 2-year follow-up

Study Arms (1)

Patients received Trop-2 ADC （SG）

Advanced breast cancer patients with brain metastases who were treated with Sacituzumab Govitecan (SG).

Drug: Sacituzumab Govitecan (SG)

Interventions

Sacituzumab Govitecan (SG) DRUG

Sacituzumab Govitecan

Also known as: IMMU-132, Sacituzumab Govitecan-hziy

Patients received Trop-2 ADC （SG）

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

Patients with breast cancer and brain metastases, aged ≥18 years, who have received Sacituzumab Govitecan (SG).

You may qualify if:

• At least 18 years old (based on actual age at the time of signing the informed consent form), with no restriction on gender
• Able to understand the study purpose, risks, and benefits, and voluntarily sign the written informed consent form; if the patient has cognitive impairment or is unable to express themselves independently, their legal guardian/authorized agent shall sign after being fully informed, and provide valid authorization documents.
• Have access to complete medical records (including breast cancer primary lesion diagnosis data, brain metastasis diagnosis data, SG treatment records, follow-up data, etc.) in the study collaborating medical institutions/specified medical systems to ensure traceability of treatment processes and outcomes.
• Diagnosed with breast cancer via histopathological/cytopathological examination, with the diagnostic report issued by a tertiary hospital or the study-designated pathology center.
• Diagnosed with breast cancer brain metastasis based on meeting any of the following conditions: ① Definitive diagnosis by a physician with associate senior title or above, combining contrast-enhanced cranial magnetic resonance imaging (MRI)/computed tomography (CT) with clinical symptoms and signs; ② Postoperative pathology of brain metastatic lesions confirming breast cancer metastasis; ③ Pathological examination of brain metastatic lesion biopsy specimens confirming breast cancer metastasis.
• No restrictions on the number, size of brain metastatic lesions, presence of meningeal metastasis, or presence of brain metastasis-related symptoms (e.g., headache, limb dysfunction).
• Previous treatment with Sacituzumab Govitecan (SG), with clear medication records (prescription orders, medical orders, pharmacy dispensing records, etc.), and no restrictions on the line of SG treatment, dosage, or treatment cycles (both completion of full-cycle treatment and early discontinuation due to adverse reactions/progression are acceptable).
• No restriction on the start time of SG treatment ; patients currently receiving SG treatment, who have completed SG treatment, or who have discontinued SG treatment due to objective reasons are all eligible.
• Stable vital signs at present, without the following uncontrolled severe conditions: ① Severe infections such as sepsis and severe pneumonia (symptoms relieved and laboratory indicators normalized after anti-infective treatment); ② Epileptic seizures within the past 3 months (or uncontrolled without standardized anti-epileptic treatment); ③ Failure of major organs such as heart, liver, and kidney (e.g., New York Heart Association (NYHA) Class Ⅳ cardiac function, Child-Pugh Class C liver function, chronic kidney disease Stage 5) .
• The patient/guardian can cooperate with study follow-up (outpatient follow-up, telephone follow-up, electronic medical record extraction, etc.), and survival status, disease progression, subsequent treatment, adverse reactions, and other information can be obtained within the expected follow-up period.

You may not qualify if:

• Complicated with other primary malignant tumors (excluding breast cancer), and the tumor was in an active stage within the past 5 years (not achieving complete remission or disease-free survival for more than 5 years).
• Unable to cooperate with informed consent or follow-up due to mental illness, cognitive impairment, etc., and without qualified guardian assistance.
• Concurrent participation in other interventional clinical trials (e.g., randomized controlled trials), which may affect data collection and result interpretation of this study.
• Other conditions judged by the researcher to affect study quality or patient safety .

Sponsors & Collaborators

• Peking University Cancer Hospital & Institute: lead

Study Sites (1)

Beijing Cancer Hospital

Beijing, Beijing Municipality, 100142, China

RECRUITING

MeSH Terms

Conditions

Breast Neoplasms; Brain Neoplasms

Interventions

sacituzumab govitecan

Condition Hierarchy (Ancestors)

Neoplasms by Site; Neoplasms; Breast Diseases; Skin Diseases; Skin and Connective Tissue Diseases; Central Nervous System Neoplasms; Nervous System Neoplasms; Brain Diseases; Central Nervous System Diseases; Nervous System Diseases

Central Study Contacts

Guohong Song, Doctor of Medicine (M.D.)

CONTACT

0086-88121122-2066; songguohong918@hotmail.com

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: RETROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Chief Physician, Deputy Director of the Department, Medical Oncology of Breast Cancer

Study Record Dates

• First Submitted: September 24, 2025
• First Posted: November 26, 2025
• Study Start: August 1, 2024
• Primary Completion (Estimated): December 31, 2026
• Study Completion (Estimated): December 31, 2027
• Last Updated: November 26, 2025

Record last verified: 2025-11

Locations

CN (1)