Pathologically confirmed new breast cancer (invasive cancer)
Clinical stage II-III
women
Aged 25-80
At least 6 months of follow-up data, clinical diagnosis and treatment information and personal information available for follow-up are complete
Complete biological samples required for the study: fresh/frozen tissues/white tablets/wax blocks meeting the requirements of the experiment (before neoadjuvant chemotherapy)
Tumor markers and imaging data were complete
Neoadjuvant chemotherapy is commonly recommended by the standard NCCN guidelines
You may not be if
Subjects refuse to participate
First diagnosis of stage I or IV breast cancer
Pathological diagnosis of concurrent (or previous) other malignant tumors
Prehistory breast cancer
Younger than 25 or older than 80
Clinical diagnosis and treatment information or biological samples required by the research institute do not meet the needs of the experiment
