The study was conducted in 11 Brazilian sites specialized in the treatment of this condition. The study data were collected from the review of medical records by the Investigator (or designated).~The sites must have had adequate medical records to ensure robust medical record review. Therefore, a feasibility assessment was carried out at potential site prior to the study implementation to assess the adequacy of medical records and the data routinely available.
Observational, longitudinal (retrospective cohort), multicenter, national study aiming to evaluate the proportion of women with HR+/HER2- advanced breast cancer treated with ribociclib plus non-steroidal aromatase inhibitors who were alive and without disease progression at 1 year.