However, in the Tal et al. study [26], the women were simulated using both the GnRH agonist and GnRH antagonist protocols, and the correlations were evaluated among the total number of participants, i.e. they included PCOS-A, PCOS-Anta, Control-A, and Control-Anta. This evidence concerns the gene GNRH1 and polycystic ovary syndrome.