Estradiol, Progesterone and Endometrial Thickness in Frozen Euploid Embryo Transfer

Study Overview
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Brief Summary
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The development and improvement in Preimplantation genetic diagnosis/screening (PGS) in association with the efficacy and security of vitrification and trophectoderm biopsy, more efficient stimulation schemes and laboratory improvements in culture and embryo selection have contributed to high success of the assisted reproductive technologies(ART). Transferring an euploid embryo avoids one of the main reasons of miscarriage and implantation failure ( Rubio et al, 22016) and overcomes one of the most important confounding factors. Usually, the transfer of euploid embryos is performed under standard hormone replacement therapy (HRT) and are referred to as FET-PGS cycles( Frozen embryo transfer). The study of FET-PGS cycles with the transfer of a single euploid blastocyst is the best model for evaluation of the impact of the endometrial preparation . Among factors influencing FET outcomes, patient's age, endometrial preparation, endometrium thickness, endometrial pattern, number and quality of embryos transferred , difficulty at ET, recently P4 have received more attention . The importance of Progesterone (P4) in embryo implantation has been widely studied. P4 plays an important role in endometrial gland formation, embryonic implantation and pregnancy maintenance, both in natural and artificial cycles.

Official Title
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Estradiol, Progesterone and Endometrial Thickness in Frozen Euploid Embryo Transfer

Conditions
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Infertility, Preimplantation Genetic Diagnosis/Screening, Miscarriage

Intervention / Treatment
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* Other: Estradiol level
* Other: Progesterone level
* Other: Endometrial thickness


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Frozen embryo transfer (FET) of at least one single euploid embryo. Estradiol > 75pg/ml. Progesterone > 4 ng/ml. Endometrial thickness between 6 mm and 18 mm. Exclusion Criteria: Patients with FET of no diagnostic or mosaic embryos, or known uterine abnormality were excluded. Natura cycle protocol.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 43 Years

Sexes Eligible for Study
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Female

Study Plan
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How is the study designed?
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Arms and Interventions

| Intervention/Treatment |
| --- |
|Other: Estradiol level|Estradiol level measured at previous day of embryo transfer procedure|
|Other: Progesterone level|Progesterone level measured at previous day of embryo transfer procedure|
|Other: Endometrial thickness|Endometrial thickness measured at previous day of embryo transfer procedure|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Live birth rate |  | Ten months after transfer procedure | 
| Miscarriage rate | Miscarriage was defined as a loss following a positive pregnancy test and/or detectable Gestational sac | Any pregnancy loss before week 20 | 
| Pregnancy rate |  | 6 weeks after transfer procedure |