GNRH1 and polycystic ovary syndrome: Cycle cancellation, withholding gonadotropins administration and postponing human chorionic gonadotropin (HCG) injection till HCG drops to a safe level (coasting),antagonist rescue protocol, embryos freezing, minimal stimulation IVF, in vitro maturation of oocytes, metformin administration in patients with polycystic ovary syndrome, natural cycle IVF, triggering ovulation with a reduced dose of HCG or with GnRH agonist in GnRH antagonists stimulation cycle and administration of GnRH antagonist after oocyte retrieval have all been used.