This study highlights the significant role of environmental factors, specifically air pollution, in the severity of cystic fibrosis among Hispanic children. Understanding these influences could reshape clinical strategies and patient education for CF therapies, particularly in addressing health disparities. Regulatory context from FDA (FDA AP — CHILDREN'S ALLEGRA HIVES (SUPPL)) supports the near-term read. Assessment grounded in 17 ranked evidence items (11 high-relevance).