This clinical trial is focused on studying treatments for Advanced Breast Cancer in older patients. The study involves several medications, including Verzenios (abemaciclib), Faslodex (fulvestrant), IBRANCE (palbociclib), Arimidex (anastrozole), Kisqali (ribociclib), Aromasin (exemestane), and Femara (letrozole). These medications are used to explore the effectiveness of different doses of CDK 4/6-inhibitors, which are a type of cancer treatment that helps to slow down the growth of cancer cells. The purpose of the study is to investigate how well these treatments work when given at a lower initial dose along with endocrine therapy, compared to the full recommended dose, in older patients who may be more vulnerable or frail.
Participants in the study will receive either the lower dose or the full dose of the CDK 4/6-inhibitors along with endocrine therapy. The study will monitor the time it takes for the treatment to stop being effective, known as “time to treatment failure.” Other aspects being observed include overall survival, progression-free survival, and the time it takes before chemotherapy is needed. The study will also look at the side effects of the treatments, the quality of life of the participants, and the cost-effectiveness of the treatments.
The trial is expected to run until 2031, with recruitment starting in November 2023. This study aims to provide valuable insights into optimizing treatment for older patients with advanced breast cancer, ensuring they receive the most effective and safe care possible.



Finland
Greece
Italy
Norway
Spain
Sweden