COL8A2 and endometriosis: Hallmark pathway enrichment analysis of DEGs in endometriosis identified 15 EMT-associated genes (CXCL12, TAGLN, ACTA2, MYL9, VCAM1, DPYSL3, FMOD, GAS1, PTX3, ENO2, BGN, COL8A2, COL11A1, THBS2, NID) (Table 5).