MRK's Winrevair Phase III Study in Newly Diagnosed PAH Meets Goal

Key Takeaways MRK's HYPERION study met its primary goal, reducing clinical worsening in newly diagnosed PAH patients. The HYPERION study was stopped early due to strong efficacy seen in the ZENITH study and other data. Winrevair sales reached $280M in Q1 2025, growing 40% sequentially with strong U.S. prescription trends.Merck (MRK) announced that the phase III HYPERION study evaluating its pulmonary arterial hypertension (“PAH”) drug, Winrevair (sotatercept), in newly diagnosed intermediate or high-risk ...