This study is testing a new medicine called dexpramipexole for people with eosinophilic asthma, which is a type of asthma with lots of eosinophils (a type of white blood cell) causing breathing problems. The study checks if dexpramipexole helps improve breathing, asthma symptoms, and life quality. Participants must be at least 12 years old (18+ in Poland) and have asthma not well controlled by current medicines like inhaled corticosteroids (ICS). They need to have had asthma for at least a year and meet certain health criteria. The study will also ensure the safety of the medicine.

• The study includes multiple visits and tests to monitor participants' health and response to the medicine.
• Participants must follow specific rules about birth control and medication use during the study.
• Compensation details are not provided, so participants should inquire directly for this information.