Observational Study of Ribociclib with Hormone Therapy for HR HER2-negative Stage II-III Breast Cancer in Russia

What this Trial Is About

Researchers are evaluating the effectiveness of adjuvant ribociclib combined with hormone therapy using aromatase inhibitors with or without GnRH agonists in patients with hormone receptor-positive HR HER2-negative stage II-III breast cancer. This observational study includes two groups a prospective cohort receiving ribociclib plus aromatase inhibitors, and a retrospective cohort treated with aromatase inhibitor monotherapy. The study aims to analyze outcomes based on tumor grade, lymph node involvement, and hormone therapy response in real-world clinical practice in Russia. Participants in the prospective group receive ribociclib along with aromatase inhibitors GnRH agonists, while the retrospective group includes patients treated with aromatase inhibitor monotherapy. Data collection includes both primary prospective data and secondary retrospective data from medical records. The study does not involve experimental treatment assignments but observes existing treatment patterns and outcomes. Participants will be monitored over several years with assessments at months 36, 48, and 60 to evaluate invasive breast cancer-free survival and other related outcomes. Quality of life questionnaires and safety data including adverse events are collected at multiple time points up to 60 months. The study involves continuous data review to assess treatment adherence, disease recurrence, and patient well-being throughout the observation period.

Non-interventional Study to Assess the Effectiveness and Safety of Ribociclib in the Adjuvant Therapy of Hormone Receptor Positive (HR+) HER2-negative Stage II and III Breast Cancer in Real Clinical Practice in Russia