Fudan University Shanghai Cancer Center Breast Cancer Precision Platform Series Study- Neoadjuvant Therapy

Prior treatment

• Previous cytotoxic chemotherapy, endocrine therapy, biological therapy or radiotherapy for any reason;
• Participated in other trial studies within 30 days before the administration of the first dose of the study drug;

Other illness

• Patients with New York Heart Association (NYHA) grade II or above heart disease (including grade II);
• Patients with severe systemic infections or other serious diseases;
• Patients with known allergy or intolerance to the study drug or its excipients;
• Other malignant tumors in the past 5 years, except cured cervical carcinoma in situ and non-melanoma skin cancer;

Age

• Pregnant or lactating patients of childbearing age who refused to take appropriate contraceptive measures during the course of the study;

Other

• Patients who were judged by the investigator to be unsuitable for this study.

• Histologically confirmed invasive breast cancer of clinical stage T1-4N1-3M0 or cT2-4N0M0;
• Age between18-70 years;
• Eastern Cooperative Oncology Group (ECOG) performance status 0-1;
• ER, PR and HER2 status were measured by immunohistochemistry (IHC);
• LVEF≥55%；
• Definition of SNF subtypes: SNF subtypes confirmed by digital pathology of H\&E slices;
• Triple negative subtyping: On the basis of triple-negative pathological diagnosis, AR, cluster of differentiation 8 (CD8) and Forkhead Box C1 (FOXC1) were combined to define the subtyping;
• At least one measurable lesion according to RECIST version 1.1
• Normal organ and marrow function: Hemoglobin (HB) ≥90 g/L (No blood was transfused within 14 days), Absolute neutrophil count ≥ 1500/μL, Platelets ≥ 75,000/μL, Total bilirubin ≤ 1.5 x ULN), aspartate aminotransferase (AST) (SGOT) and alanine aminotransferase (ALT) (SGPT) ≤ 3 x ULN, creatinine \< 1 x ULN, endogenous creatinine clearance \> 50 ml/min (Cockcroft-Gault formula);
• Non-pregnant and non-lactating, fertile female subjects were required to use a medically approved contraceptive method for the duration of the study treatment and at least 3 months after the last use of the study drug;
• Ability to understand and willingness to sign a written informed consent