Comparison Between GnRH Agonist and GnRH Antagonist Protocols of Ovarian Stimulation in PCOS Patients

Summary

The purpose of this study is to compare pregnancy rates and the occurrence of OHSS in PCOS patients who were treated with GnRH agonist and GnRH antagonist protocols ovarian stimulation during an IVF cycle. Our hypothesis is that the GnRH antagonist protocol reduces the occurrence and severity of OHSS compared to the GnRH agonist protocol.

Timeline

Start

2003-11

Primary completion

—

Completion

2007-05

Outcome

Missed primary endpoint

paper No differences were observed in ongoing pregnancy rates [50.9 versus 47.3%, difference 3.6%, 95% confidence interval (CI): -9.6 to +16.8%] PMID 20008886 ↗

Publications

• Background Aboulghar MA, Mansour RT. Ovarian hyperstimulation syndrome: classifications and critical analysis of preventive measures. Hum Reprod Update. 2003 May-Jun;9(3):275-89. doi: 10.1093/humupd/dmg018.
• Lainas TG, Sfontouris IA, Zorzovilis IZ, Petsas GK, Lainas GT, Alexopoulou E, Kolibianakis EM. Flexible GnRH antagonist protocol versus GnRH agonist long protocol in patients with polycystic ovary syndrome treated for IVF: a prospective randomised controlled trial (RCT). Hum Reprod. 2010 Mar;25(3):683-9. doi: 10.1093/humrep/dep436. Epub 2009 Dec 15.

Drugs

Indications