Application of CfDNA Methylation Detection in Auxiliary Diagnosis of Breast Cancer

Inclusion criteria

for All the Participants:

• With confirmed pathological diagnosis and molecular subtyping results
• Ability to provide a written informed consent

Exclusion criteria

for Cancer Arm Participants:

• Patients with a history of or currently suffering from other malignancies
• Pregnant or planning to become pregnant female patients
• Patients who have received cancer treatment, including surgery, chemotherapy, radiotherapy, targeted therapy, and immunotherapy, before blood draw
• Patients with a history of blood transfusion within the past month
• Patients with a known history of allogeneic organ transplantation and allogeneic hematopoietic stem cell transplantation
• Patients with persistent fever or undergoing anti-inflammatory treatment within 14 days before blood draw
• Any other conditions that the researcher deems may make the patient unsuitable for inclusion in the study or may interfere with the completion of the study
• Patients in poor physical condition who are not suitable for blood draw
• Patients who cannot provide informed consent or refuse blood draw

Exclusion criteria

for Benign Diseases Arm Participants:

• History of malignancies
• Current malignancies or precancerous lesions