Significant correlations only between oral fractional exhaled nitric oxide (FeNO) or total nasal FeNO (nFeNO) and LPCAT2, LPCAT3, and PTAFR were recognized in CRSwNP (Figure 5), but no significant correlations were observed between either FeNO value and LPCAT1, LPCAT4, PAFAH1B2, or PAFAH1B3 expression. Here, LPCAT4 is linked to chronic rhinosinusitis with nasal polyps.