Characterizing endotypes in chronic rhinosinusitis: emerging research and clinical applications

Describe the implications of the findings for clinical practice or research. Increase use of precision biologics necessitates developing well validated endotypes to better select therapy for patients. Three major approaches - histology-based, single-biomarker, and multibiomarker strategies - are commonly employed, each with distinct advantages and limitations. Moving forward, standardization of methods, development of cost-effective testing, and rigorous clinical validation remain essential steps.