A Prospective, Open, Multicenter Single-arm Clinical Studie of Docetaxel, Carboplatin Combined With Inetetamab and Pyrotinib in the Treatment of Local-advanced HER2-positive Breast Cancer
This study is a prospective, open, multi-center, single arm trial. The treatment group will receive six cycles of docetaxel, carboplatin combined with Inetetamab and Pyrotinib before surgery. By focusing on tpCR (ypT0/is, ypN0) evaluated by pathology, the efficacy of docetaxel, carboplatin combined with Inetetamab and Pyrotinib in the preoperative treatment of locally advanced HER2-positive breast cancer will be evaluated. During long-term follow-up, event-free survival (EFS), disease-free survival (DFS), distant metastasis-free survival (DDFS), overall survival (OS), central nervous system disease-free survival (CNSDFS) under this treatment regimen will be evaluated, and the efficacy-related biomarkers will be explored. The cardiotoxicity of Inetetamab and Pyrotinib in the treatment of breast cancer is also be evaluated.
• Female patients aged 18-75 years old;
• ECOG score 0-1;
• Breast cancer meets the following criteria: Histologically confirmed invasive breast cancer, primary tumor diameter \> 2 cm as determined by standard evaluation methods at the research center; tumor stage: locally advanced;
• HER2 expression-positive breast cancer confirmed by pathological examination;
• Known hormone receptor status (ER and PR);
• The functional level of major organs must meet the following requirements (no blood transfusion within 2 weeks before screening, no use of white blood cell and platelet-raising drugs):
⁃ (1) Blood routine: neutrophil (ANC) \>= 1.5×10\^9/L; platelet count (PLT) \>= 90×10\^9/L; hemoglobin (Hb) \>= 90 g/L; (2) Blood biochemistry: total bilirubin (TBIL) \<= upper limit of normal (ULN); alanine aminotransferase (ALT) and aspartate aminotransferase (AST) \<= 1.5×ULN; alkaline phosphatase \<= 2.5×ULN; urea nitrogen (BUN) and creatinine (Cr) \<= 1.5×ULN; (3) Echocardiography: left ventricular ejection fraction (LVEF) \>= 60%; (4) 12-lead ECG: Fridericia-corrected QT interval (QTcF) \< 470 msec; 7. Female patients who are not menopausal or surgically sterilized: agree to abstain from sex or use effective contraceptive methods during treatment and for at least 7 months after the last dose in the study treatment; 8. Voluntarily join the study, sign the informed consent, have good compliance and are willing to cooperate with follow-up.