PTGDR2 and asthma: Therefore, transcriptomics of ILC2s isolated from blood of asthma patients and incubated with PGD2 and four PGD2 metabolites (Δ12-PGJ2, Δ12-PGD2, 15-deoxyΔ12,14-PGD2, 9α,11β-PGF2) in presence or absence of the selective DP2 antagonist fevipiprant were analyzed to further our understanding of DP2 initiated ILC2 activity in asthma.