Single-nucleotide polymorphisms (SNPs) associated with endometriosis have, for instance, been identified in or near estrogen receptor 1 (ESR1), also termed estrogen receptor alpha (ERα), growth regulation by estrogen in breast cancer-1 (GREB1), and the follicle-stimulating hormone subunit beta (FSHB), as well as the coiled-coil domain containing 170 (CCDC170) and spectrin repeat containing nuclear envelope protein 1 (SYNE1), which are located near ESR1 and coexpressed with it [78]. Here, ESR1 is linked to endometriosis.