Immediate Versus Postponed Single Blastocyst Transfer in Programmed or Stimulated Cycle Frozen Embryo Transfer
Trial statusRecruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexFemale
Age18-40
SponsorRigshospitalet, Denmark
About this trial
The aim of this randomized controlled trial is to examine whether single blastocyst transfer in the first cycle after oocyte retrieval (immediate) is non-inferior to single blastocyst transfer in a subsequent cycle (postponed) in stimulated or programmed cycle frozen embryo transfer (FET). The primary outcome is live birth rate.
Eligibility criteria
Qualifiers
Eligible for FET in a programmed- or stimulated cycle immediately following a fresh embryo transfer or freeze all cycle
Oligo-anovulatory women (cycle length > 35 days)
Ovulatory women (cycle length 21-35 days)
At least one vitrified day 5 or 6 blastocyst with Gardner score of ≥ 3BB at the day of vitrification
Disqualifiers
Uterine malformation
Presence of hydrosalpinx, submucosal uterine myomas or uterine polyps
Allergies or contraindication to standard fertility medication
Male or female HIV or Hepatitis B or C
Trial design
Treatments tested in this trial
- Immediate FET in a stimulated or programmed cycle
Treatment groups
484 Participants
are divided into 2 treatment groupsSponsors and collaborators
Source ClinicalTrials.gov