GREB1 and endometriosis: mQTLs significantly associated with endometriosis featured DNAm sites and SNPs located in predicted enhancers that interact with GREB1 in uterus and ovary including rs1865573 that is associated with a splicing (s)QTL for GREB1 in ovary reported in GTEx82, suggesting a possible role of alternative splicing of GREB1 in endometriosis susceptibility.