Klingler et al. performed an endotyping of CRSsNP and found a rate of detectability of IP-10 in 100% of the CRSsNP samples, similar to our data demonstrating IP-10 (type-1 biomarker) in the “pure” type-1 profile. The gene discussed is CXCL10; the disease is chronic rhinosinusitis without nasal polyps.