New imaging reveals how CS1 drug may reshape lungs in rare Heart-Lung disease

This study tested whether a drug called CS1 can improve the structure of small lung arteries in people with pulmonary arterial hypertension (PAH), a serious disease that makes it hard to breathe. Seven adults already taking CS1 in an expanded access program had special CT scans at the start and after 12 months to measure blood vessel changes. The goal was to see if CS1 can slow or reverse artery damage, which could lead to better treatments for PAH.