Significance of and gene polymorphisms on clinical outcomes in gonadotropin-releasing hormone antagonist protocol with freeze-all strategy: A case-control study.

Background: Follicle-stimulating hormone receptor () and luteinizing hormone/choriogonadotropin receptor () are integral to ovarian function, facilitating follicle development and maturation through their respective hormonal interactions. The influence of receptor polymorphisms on the outcomes of freeze-all cycles remains unclear.

Objective: This study investigates the impact of and polymorphisms on clinical outcomes in freeze-all cycles.

Neonatal outcome after vitrified day 3 embryo transfers: a preliminary study.

Objective: To compare and evaluate the neonatal outcome in infants born after vitrified day 3 embryo transfers with that of fresh day 3 embryo transfers.

Design: Retrospective analysis.

Setting: Private assisted reproductive center.

Vitrification of human 8-cell embryos, a modified protocol for better pregnancy rates.

Human day 3 embryos were vitrified in modified ethylene glycol-based protocol. The present study reports a post-thaw survival rate of 95.3%, which was significantly higher than that of the conventional slow-freezing protocol (60.