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Letrozole for Frozen Embryo Transfer (FET) in Patients With Polycystic Ovary Syndrome (PCOS) — LEFT  

Polycystic Ovary Syndrome Clinical Trial

Official title:
Endometrial Preparation Using Letrozole Compared to Artificial Cycle for Frozen Embryo Transfer in PCOS Patients

Clinical Trial Summary

To offer patients with oligomenorrhoea or amenorrhoea an alternative to frozen embryo transfer in an artificial cycle, endometrial preparation using letrozole may be a valuable option. Letrozole, a potent, reversible nonsteroidal aromatase inhibitor with relatively short half-life, can successfully induce ovulation without any adverse anti-estrogenic effects and thus without affecting the endometrium. The use of letrozole typically results in monofollicular growth and this reduces the effect of supraphysiological levels of estrogen on the endometrium and embryo. The purpose of this study is to compare a frozen-thawed embryo transfer in an artificial cycle with a letrozole-induced ovulatory cycle, specifically in PCOS patients. The primary outcome is early pregnancy loss.

Clinical Trial Description

n/a

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT04002635
Study type Interventional
Source CRG UZ Brussel
Contact
Status Withdrawn
Phase Phase 4
Start date December 1, 2020
Completion date April 1, 2022
View Details
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