Nasal Lavage IL-4 and IL-13 in Cystic Fibrosis-Related Chronic Rhinosinusitis: Associations With Disease Severity and Potential Implications for Targeted Therapies.
BACKGROUND Chronic rhinosinusitis (CRS) is highly prevalent in patients with cystic fibrosis (CF) and has traditionally been considered a predominantly neutrophilic condition. Emerging evidence, however, suggests that type-2 inflammatory pathways may contribute to disease heterogeneity. Data linking local inflammatory...