Stereotactic Radiotherapy Combined With Adebrelimab and TCb (Nab-paclitaxel + Carboplatin) in Neoadjuvant Treatment of TNBC

Inclusion Criteria: * Treatment-naïve breast cancer female patients aged ≥ 18 years and ≤ 75 years; * Histopathologically confirmed early or locally advanced triple-negative invasive breast cancer according to the latest ASCO/CAP guidelines, meeting the following conditions: (1) pathological type is triple-negative, specifically: ER negative: IHC \< 1%, PR negative: IHC \< 1%, HER2 negative: IHC 0/1 + or IHC2 + but ISH negative; * Clinical stage II-III invasive breast cancer with measurable lesions according to RECIST 1.1; * ECOG score 0-1; * Able to tolerate preoperative and postoperative adjuvant radiotherapy after assessment by a radiologist; * Appropriate level of organ function * Patients voluntarily participate in and sign the informed consent form, are expected to have good compliance and cooperate with the study according to the requirements of the protocol. Exclusion Criteria: * Patients with metastatic breast cancer or bilateral breast cancer; * Patients with inflammatory breast cancer or occult breast cancer; * Patients received any anti-tumor therapy within 12 months before signing the informed consent form, including chemotherapy, targeted therapy, radiotherapy, endocrine therapy, immunotherapy, biological therapy or tumor embolization; * Patients previously received PD-1/PD-L1 antibody, CTLA-4 antibody, or other treatments against PD-1/PD-L1 inhibitors; * Female patients who are pregnant and lactating, female patients who are fertile and have a positive baseline pregnancy test, or female patients of childbearing age who are unwilling to take effective contraceptive measures throughout the trial. * Have a clear history of neurological or psychiatric disorders, including epilepsy or dementia, and the subject has a known history of psychotropic drug abuse, alcoholism ; * Human immunodeficiency virus (HIV) infection or known acquired immunodeficiency syndrome (AIDS); positive hepatitis B surface antigen (HBsAg) test, or positive hepatitis B core antibody (HBcAb) test followed by positive HBV-DNA test (HBV-DNA test was performed only in patients with negative HBsAg test and positive HBcAb test); positive hepatitis C virus (HCV) antibody test followed by positive HCV-RNA test (HCV-RNA test was performed only in patients with positive HCV antibody test) * Any other condition that, in the opinion of the investigator, would make the patient inappropriate for participation in this study.