Core Viewpoint - Vertex Pharmaceuticals has received an expanded label approval from the European Commission for its cystic fibrosis drug Kaftrio, allowing treatment for all patients aged two years and older with at least one non-class I mutation in the CFTR gene [1][2]. Company Overview - Vertex Pharmaceuticals holds a dominant position in the cystic fibrosis market, being the first company to develop a drug that addresses the underlying cause of the disease [6]. - The company markets multiple cystic fibrosis medications, including Kaftrio (Trikafta in the U.S.), Alyftrek, Symdeko/Symkevi, Orkambi, and Kalydeco [6][3]. Market Impact - The expanded label for Kaftrio will make nearly 4,000 additional cystic fibrosis patients eligible for treatment in the European region [2]. - Vertex's cystic fibrosis sales have shown significant growth, with Kaftrio contributing $10.24 billion in product sales in 2024, reflecting a year-over-year increase of approximately 15% [7]. Future Developments - Vertex is developing an mRNA therapeutic, VX-522, in collaboration with Moderna for approximately 5,000 cystic fibrosis patients who do not produce CFTR protein. The single ascending dose portion of the phase I/II clinical study is complete, with data from the ongoing multiple ascending dose portion expected in the first half of 2025 [8]. Stock Performance - Year to date, Vertex's stock has gained 18%, outperforming the industry, which has seen a 7% decline [4].