Single Embryo Transfer vs. Double Embryo Transfer in an Oocyte Donation Programme

A Prospective, Randomized, Controlled Trial Comparing SET vs DET in an Oocyte Donation Programme

Experimental study to assess the efficacy of single embryo transfer (SET) with respect to double embryo transfer (DET) in an oocyte donation programme, 160 recipients will be randomized in two groups

Inclusion Criteria:

• patients under their first or second cycle of a synchronous donation
• to have a minimum of 5 available embryos to transfer
• patients who accept transfers of frozen-thawed embryos

Exclusion Criteria:

• medical indications to transfer only one embryo (Turner Syndrome, uterine surgical history, uterine myomas,…)