IRCT2016092224512N4 IRCT 2016-10-03 Research Deputy, Shahid Sadoughi University of Medical Sciences Pregnancy outcome in Fresh versus Freeze embryo transfer Comparison of Fresh and Frozen Embryo Transfer in GnRH Agonist Triggered patients: A Multicenter Study 2014-01-01 anticipated 1280 Complete https://irct.ir/trial/20671 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: In this multicenter, randomized clinical trial, 280 infertile women at risk of OHSS were enrolled in the study. All patients were informed about the research design and signed a written consent form. All women were randomly divided into two groups. Randomization was simple, individual using a random number table. N/A Infertility. Intervention 1: Intervention group 1: Freeze of all embryos according to embryo freezing standard protocol at the same cycle. Thaw all the embryos according to embryo thawing standard protocol and embryo transfer at the next cycle. Intervention 2: Intervention group 2: Transfer of 2 fresh embryos at the same cycle Luteal phase support using oral Estradiol Valerat at the dose of 4 mg per day and progesterone (Cyclogest 400 mg) twice daily until observation of fetal heart activity. Yes - There is a plan to make this available What will be shared: All participant data sets are to be shared When: 2 months after the result publication To whom: A journal in which the results are published Conditions: Submission of an official application via the agent that is legally in charge Where to obtain: Yazd Reproductive Sciences Institute, Bouali Ave, Yazd, Iran. 983538247085 abbas_aflatoonian@yahoo.com How to obtain: 2 months after application Comments: