Since endometriosis was defined as an inflammatory disorder (Bulun et al., 2019) and the top 1 enriched pathway of 148 common DEGs was the arachidonic acid (AA) metabolism pathway, a key pro-inflammatory pathway (Kuehl & Egan, 1980), we validated this pathway-related genes: GGT5, CYP2J2, PTGIS and PLA2G2A in the OE RNA-sequencing dataset GSE105764. Here, PTGIS is linked to endometriosis.