GNRH1 and ovarian hyperstimulation syndrome: This study aimed to offer additional clinical guidance for choosing ovulation induction protocols in normal ovarian responders by comparing clinical outcomes between the GnRH-ant and GnRH-a protocols. Even though a meta-analysis has revealed that antagonist regimens can decrease OHSS in individuals with normal ovarian reserve, they can still achieve similar clinical pregnancy and live birth rates as long agonist regimens.