In the present study, the A allele of the FSHR:c.919G>A SNV was associated with a lower number of oocytes only in women with moderate/severe disease, while the AA genotype of the FSHR, c.2039G>A SNV, was associated with a lower amount of rFSH for COS in women with minimal/mild disease and a greater number of oocytes retrieved in women with moderate/severe endometriosis. Here, FSHR is linked to endometriosis.