A Prospective Observational Study to Describe Clinical Outcomes, Treatment Patterns, Patients Characteristics Among Patients With HR+/HER2- Advanced BC Initiating Treatment With Risarg®, Piqray®, Endocrine Therapy or Chemotherapy in Routine Clinical Practice in Russia

A Prospective Observational Study to Describe Clinical Outcomes, Treatment Patterns, Patients Characteristics Among Patients With HR+/HER2- Advanced BC Initiating Treatment With Risarg® (Ribociclib), Piqray® (Alpelisib), Endocrine Therapy or Chemotherapy in Routine Clinical Practice in Russia

This study was planned as a prospective multicenter NIS. This study was observational in nature and did not impose a therapy protocol, diagnostic/therapeutic interventions or a visit schedule. Patients with HR+/ HER2- advanced or metastatic BC that initiated treatment with ribociclib, alpelisib, mono endocrine therapy or chemotherapy were included in the study across seven Russian districts.

Patients attended the sites in accordance with routine clinical practice. It is assumed that visits will be conducted every 3-4 months. Patients underwent standard procedures and tests according to clinical guidelines and physician's judgement. Available data from routine clinical management of the patients was collected at patients' visits to the clinical site. Patients enrolled in the study were followed up until death or study close whichever occurred first. The recruitment period was planned for 24 months, observation period for maximum of 24 months, with total duration of study 4 years. Patients could discontinue from this NIS at any time.

Inclusion Criteria:

1. Age ≥ 18 years at the moment of ribociclib, alpelisib, monoET or CT treatment initiation.
2. Female gender.
3. Confirmed diagnosis of locally advanced/metastatic not amenable to surgery HR+/HER2- BC (progressed following prior therapy or de novo) for whom the treating physicial took the decision to initiate treatment with ribociclib, alpelisib, monoET or CT before entering the study.
4. Patient who initiated treatment with ribociclib, alpelisib, monoET or CT no longer than 4 weeks (28 days) prior to written informed consent for this study.
5. Patients with ECOG performance status ≤ 2.
6. Provision of written informed consent.

Exclusion Criteria:

1. Patients with a life expectancy of less than 3 months at the time of aBC diagnosis per the investigator's judgment.
2. Patients participating in any interventional clinical trial that includes investigational or marketed products at the time of enrollment. (Patients participating in other investigator initiated trial or NIS can be included as long as their standard of care is not altered by the study).
3. Patients receiving active treatment for malignancies other than BC at the time of enrollment.
4. Patients who are unable to understand the nature of the study.