Age between 40 and 70 years Diagnosis of breast cancer at any stage No prior surgical treatment No prior antineoplastic treatment Pathology report available at the time of enrollment Signed informed consent
Group 2 - No Cancer (Control):
Age between 50 and 70 years No diagnosis or personal history of any type of cancer Digital mammography and breast ultrasound showing no breast pathology (BI-RADS 1 or 2) Signed informed consent
You may not be if
Refusal to sign the informed consent Communication issues that hinder understanding (hearing loss, blindness, intellectual disability, or dementia) Venipuncture for blood collection impracticable or posing a risk Personal history of previous cancer
