Qing et al.'s group of endometriosis patients who underwent surgery after receiving adjuvant GnRH prior to starting ART had a slightly higher pregnancy rate (RR = 1.20, 95% CI = 1.02-1.41; p = 0.03) and a shorter mean time to conception (RR = -1.17, 95% CI = -1.70- -0.64; p < 0.0001) [60]. Here, GNRH1 is linked to endometriosis.