Multivariable logistic regression analysis showed that CLBR per oocyte retrieval cycle was significantly lower with PPOS vs the GnRH antagonist regimen both before (odds ratio [OR] 0.62 [95% CI: 0.46, 0.82; P=0.009]) and after (OR 0.66 [95% CI: 0.47, 0.93; P=0.0172]) adjustment for age, BMI, infertility type, duration of infertility, baseline FSH, AMH, AFC and insemination method (Table 3). Here, GNRH1 is linked to Infertility.