TSLP and chronic rhinosinusitis with nasal polyps: Among patients with CRSwNP, TSLP mRNA expression has been shown to be increased in NP tissue and NECs isolated from those with eCRSwNP versus those with non-eosinophilic CRSwNP (neCRSwNP), which correlated with clinical severity of eCRSwNP [51, 53, 56, 57].