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Prospective, multicenter study of neoadjuvant Phesgo with chemotherapy de-escalation for HER2-positive FUSCC HER2-CLA early breast cancer

Prospective, multicenter study of neoadjuvant Phesgo with chemotherapy de-escalation for HER2-positive FUSCC HER2-CLA early breast cancer

Status
Active, not recruiting
Phases
Phase 4
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2500109333
Enrollment
Unknown
Registered
2025-09-16
Start date
2025-09-19
Completion date
Unknown
Last updated
2025-09-22

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

Conditions

HER2-positive early breast cancer FUSCCHER2-CLA.

Interventions

HER2-positive early breast cancer FUSCCHER2-CLA:Phesgo

Sponsors

The affiliated hospital of southwest medical university
Lead Sponsor

Eligibility

Sex/Gender
Female
Age
18 Years to 70 Years

Inclusion criteria

Inclusion criteria: 1.Signed informed consent, aged 18-70 years; 2.Patient has the ability to follow the study protocol at the discretion of the investigator; 3.Confirmed HER2-positive Breast Cancer, FUSCC HER2-CLA; 4.At least one measurable lesion (RECIST 1.1); 5.Primary breast cancer > 1.5 cm in size or positive lymph nodes without distant metastasis; neoadjuvant therapy planned; 6.ECOG 0 or 1; 7.LVEF>= 55%; 8.Neutrophil count (ANC) >= 1.5 x 10^9/L; 9.Hemoglobin (Hb) >= 90 g/L; 10.Platelet count (PLT) >= 90 × 10^9/L; 11.Aspartate aminotransferase (AST), alanine aminotransferase (ALT) and alkaline phosphatase (ALP) = 30 mL/min (calculated using the Cockcroft-Gault formula);

Exclusion criteria

Exclusion criteria: 1.History of invasive breast cancer; 2.Stage IV (Metastatic) Breast Cancer; 3.Patients with concurrent bilateral invasive breast cancer; 4.Prior systemic therapy for breast cancer; 5.Ulcerative or inflammatory breast cancer; 6.History of congestive heart failure of any grade; 7.Angina pectoris requiring anti-anginal medication, serious cardiac arrhythmias not adequately controlled with medication, severe conduction abnormalities or clinically significant valvular heart disease; 8.High risk uncontrolled arrhythmias; 9.Significant symptoms ( >= Grade 2) related to left ventricular dysfunction, arrhythmia, or myocardial ischemia; 10.Myocardial infarction within 12 months prior to enrollment; 11.Uncontrolled hypertension (systolic blood pressure > 180 mmHg and/or diastolic blood pressure > 100 mmHg); 12.Evidence of transmural myocardial infarction on electrocardiogram; 13.History of autoimmune disease or immunodeficiency; 14.Serious or uncontrolled infections that may affect the assessment of study treatment or study results, including but not limited to active hepatitis virus infection, human immunodeficiency virus (HIV) antibody positive, pulmonary infection, etc. 15.Known hypersensitivity to any component of the trial medication; 16.Treatment with an investigational drug within 28 days prior to start of study treatment; 17.Pregnant or lactating female patients; 18.Any other condition that, in the opinion of the investigator, would make participation in this study inappropriate;

Design outcomes

Primary

MeasureTime frame
tpCR in the MRI-responsive group;

Secondary

MeasureTime frame
bpCR in the MRI-responsive group;apCR in the MRI-responsive group;

Countries

China

Contacts

Public ContactPan Guangrui

The affiliated hospital of southwest medical university

leftarrow@163.com+86 830 895 0792

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026