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A Multicenter, Open-Label, Randomized, Phase II Clinical Trial of Trastuzumab Rezetecan-based Therapy for Brain Metastases in HER2-Positive Breast Cancer

A Multicenter, Open-Label, Randomized, Phase II Clinical Trial of Trastuzumab Rezetecan-based Therapy for Brain Metastases in HER2-Positive Breast Cancer

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2600120221
Enrollment
Unknown
Registered
2026-03-11
Start date
2026-03-11
Completion date
Unknown
Last updated
2026-03-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast cancer

Interventions

Group A:Trastuzumab Rezetecan for Injection 4.8mg/kg,ivgtt,q3w
Group B:Trastuzumab Rezetecan for Injection 4.8mg/kg,ivgtt,q3w
pyrotinib 320mg po qd
Group C:Trastuzumab Rezetecan for Injection 4.8mg/kg,ivgtt,q3w
anlotinib 12mg po d1-14,q3w
Group D:Trastuzumab Rezetecan for Injection 4.8mg/kg,ivgtt,q3w
capecitabine 1000mg/m2 po d1-14,q3w

Sponsors

ChongQing university cancer hospital
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 75 Years

Inclusion criteria

Inclusion criteria: 1. Agree and sign the written informed consent form; 2. Female and male patients aged >= 18 years and = 1.5 × 10^9/L; platelets >= 100 × 10^9/L; hemoglobin >= 90 g/L; b) Liver function: total bilirubin = 50 mL/min (according to Cockcroft and Gault formula); d) Coagulation function: international normalized ratio (INR) = 2+, additional 24-hour urine protein quantification should be performed, if 24-hour urine protein = 50%; 11. Participants must be willing and able to comply with the protocol during the study period.

Exclusion criteria

Exclusion criteria: 1. Central nervous system complications requiring urgent intervention, or brain metastases with poor control of hormone or dehydration treatment symptoms, such as uncontrollable intracranial hypertension, mental disorders or epilepsy; 2. Previously used antibody-conjugated drugs containing epirubicin derivatives of topoisomerase I inhibitors (such as deruxtepruzumab), and disease progression occurred during treatment; 3. Previously used capecitabine and disease progression occurred during treatment; 4. Previously used anlotinib; 5. Known clinical significance pulmonary diseases, namely severe and moderate pulmonary diseases that significantly affect respiratory function, including but not limited to: idiopathic pulmonary fibrosis, pneumonia. Those with =3 grade interstitial lung disease are not eligible for enrollment; 6. Abnormal coagulation function, with a bleeding tendency (must meet INR within normal range without using anticoagulants within 14 days before medication); patients treated with anticoagulants or vitamin K antagonists such as warfarin, heparin or their analogues; with INR 450 milliseconds [male] or > 470 milliseconds [female]); 10. Third space effusion that cannot be controlled by drainage or other methods (such as pleural effusion and ascites); 11. Severe uncontrolled internal medicine diseases or acute infections (fever above 38? caused by infection); 12. Unable to swallow, intestinal obstruction or other factors affecting drug administration and absorption; 13. Known allergy history to the components of the drug in this protocol; 14. History of immunodeficiency diseases, including positive HIV test, or having other acquired or congenital immune deficiency diseases, or a history of organ transplantation; 15. Previously had other malignant tumors within 5 years, excluding cured cervical carcinoma in situ, basal cell carcinoma of the skin or squamous cell carcinoma of the skin; 16. Pregnant or lactating women, women with reproductive capacity and positive baseline pregnancy test, or fertile women who do not want to take effective contraceptive measures throughout the trial; 17. Patients with severe comorbidities, or other circumstances that the investigator considers not suitable for participation in this study; 18. Other situations considered unsuitable for participation in this trial by the investigator within 2 weeks before enrollment, such as poor compliance in other new drug clinical trials.

Design outcomes

Primary

MeasureTime frame
Central Nervous System - Objective Response Rate;

Secondary

MeasureTime frame
Central Nervous System - Progression-Free Survival;The double progression-free survival period evaluated based on the RANO-BM standard and the RECIST V1.1 standard;Duration of relief;Disease control rate;Overall survival ;Quality of life score;Adverse reactions;

Countries

China

Contacts

Public ContactXiaohua Zeng

ChongQing university cancer hospital

zxiaohuacqu@126.com+86 189 9634 0992

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Mar 20, 2026