Clinical Research Directory

Inclusion Criteria: 1. Female and male patients with histologically verified and radically treated stage II-III hormone receptor positive HER2-negative breast cancer; 2. Age ≥ 18 at the time of initiation of ribociclib therapy; 3. Patients who were prescribed ribociclib + AI (±GnRH agonist for premenopausal men and women) not earlier than 28 days before signing the informed consent; 4. It is allowed to start adjuvant hormone therapy with AI (±GnRH agonist) not earlier than 12 months before the start of ribociclib; 5. Provision of written informed consent. Exclusion Criteria: 1. Patients participating in any interventional clinical study at the time of signing the informed consent; 2. Patients receiving active treatment for malignant neoplasms other than BC at the time of enrollment.