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Frozen Embryo Transfer in Natural and Hormonal Replacement Cycles

Comparison of Pregnancy Outcomes in Frozen Embryo Transfer in Natural and Hormonal Replacement Cycles: a Randomized Controlled Trial

Status
UNKNOWN
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02251925
Enrollment
460
Registered
2014-09-29
Start date
2012-09-30
Completion date
2015-11-30
Last updated
2015-05-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Infertility

Keywords

infertility froze emberyo transfer hormone replacement

Brief summary

This study is a prospective randomized controlled trial to compare the pregnancy outcomes of frozen embryo transfer in natural and hormonal replacement cycles. The study population consisted of all infertile women with regular menstrual cycles who will undergo IVF/ICSI and frozen embryo transfer in Reproductive Biomedicine Research Center, Royan institute, Tehran Iran.

Detailed description

In this study all patients who will undergo frozen embryo transfer are randomly allocated to be prepared for transfer by using either natural cycle (with or without hCG for ovulation induction) or Hormonal cycle (with or without administration of GnRH-a) In natural cycle without hCG, daily monitoring of urinary LH is started from day eight of the cycle and frozen-thawed embryo transfer is planned 3-5 days after detection of LH surge, observing mature follicles in ultrasound and endometrial thickness over 7mm for cleavage embryos. In natural cycle with hCG, after detection of mature follicles in ultrasound and endometrial thickness over 7mm, 10,000IU hCG is injected for ovulation and embryo transfer is performed 3-5 days later in cleavage stage. In group 3, injection of GnRH agonist (Superfact) at a subcutaneous daily dose of 0.5 mg is started on the day 17-19 of the natural menstrual cycle. Once pituitary desensitization is confirmed, hormonal treatment is commenced with 4mg/day oral Estradiol valerate and after 7 days if endometrial thickness is adequate, Estradiol administration will be continued with the same dose and 100mg Progesterone is administered before embryo transfer, otherwise patients are candidates for higher dosage of Estradiol till favourable endometrial thickness is achieved. In the hormonal group without GnRH-a, endometrial preparation will be started with daily administration of 6 mg Estradiol valerate from the 2nd day of the natural menstrual cycle for 6 days. Then treatment will be continued similar to the 3rd group.

Interventions

BIOLOGICALfrozen Embryo transfer

In this study all patients who will undergo frozen embryo transfer are randomly allocated to be prepared for transfer by using either natural cycle (with or without hCG for ovulation induction) or Hormonal cycle (with or without administration of GnRH-a).

DRUG10,000U hCG injection

In natural cycle with hCG, after detection of mature follicles in ultrasound and endometrial thickness over 7mm, 10,000IU hCG is injected for ovulation and embryo transfer is performed 3-5 days later in cleavage stage.

DRUGGnRH agonist (Superfact)

In group 3, injection of GnRH agonist (Superfact) at a subcutaneous daily dose of 0.5 mg is started on the day 17-19 of the natural menstrual cycle. Once pituitary desensitization is confirmed, hormonal treatment is commenced with 4mg/day oral Estradiol valerate and after 7 days if endometrial thickness is adequate, Estradiol administration will be continued with the same dose and 100mg Progesterone is administered before embryo transfer, otherwise patients are candidates for higher dosage of Estradiol till favourable endometrial thickness is achieved.

DRUGadministration of 6 mg Estradiol valerate

In the hormonal group without GnRH-a, endometrial preparation will be started with daily administration of 6 mg Estradiol valerate from the 2nd day of the natural menstrual cycle for 6 days. Then treatment will be continued similar to the 3rd group.

Sponsors

Royan Institute
Lead SponsorOTHER_GOV

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
20 Years to 37 Years
Healthy volunteers
No

Inclusion criteria

1. Patients with regular mensturation cycles 2. Age 20-37 years 3. Patients who underwent long protocol 4. Body mass index (BMI) ≤ 30 kg/m2 5. Patients who will undergo frozen embryo transfer for the first time

Exclusion criteria

1. Oocyte or embryo donation cycles 2. Uterine diseases or malformations 3. Hyper prolactinemia 4. Thyroid disorders 5. Tuberculosis 6. Recurrent abortion history 7. Severe endometriosis 8. Ovulation disorders

Design outcomes

Primary

MeasureTime frameDescription
Clinical pregnancy rate4 weeksThe pregnancy rate will be evaluated in patients of each groups 4-6 weeks after embryo transfer.

Secondary

MeasureTime frameDescription
Implantation rate4 weeksEvaluation the implantation rate in patients of each groups 4-6 weeks after frozen embryo transfer
chemical pregnancy rates2 weeksEvaluation the chemical pregnancy rates in patients of each group 2 weeks after embryo transfer.
Ongoing pregnancy12 weeksEvaluation the ongoing pregnancy in patients of each group 12 weeks after embryo transfer.
miscarriage rate12 weeksEvaluation the miscarriage rate in patients of each group 12 weeks after embryo transfer.

Countries

Iran

Contacts

Primary ContactNasser Aghdami, MD,PhD
nasser.aghdami@royaninstitute.org(+98)23562000
Backup ContactLeila Arab, MD
Leara91@gmail.com(+98)23562000

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 4, 2026