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OpenTrials
Completed

NCT Number: NCT03989843

Impact of Embryo Cryopreservation on Birth Weight

Birth weight (BW) is higher after frozen embryo transfer (FET) than after fresh embryo replacement. No study has compared the BW of siblings conceived using the same oocyte/embryo cohort. The aim of this study was to determine whether the freezing-thawing procedure is involved in such difference.

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Key information

Conditions

Infertility Birth Weight Body Weight Genital Diseases Pathological Conditions, Signs and Symptoms Signs and Symptoms Urogenital Diseases

Age range

18 year–43 year

Sex eligibility

Female

Study type

Observational

Primary location

Uh Montpellier

Montpellier, 34295, France

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • sibling pairs where fresh embryo replacement resulting in a singleton live birth was followed by transfer of one or two frozen embryos from the same cohort that resulted in a singleton live birth, between May 2007 and June 2015.

Exclusion criteria

  • Twin pregnancies and stillbirths were excluded. If the BW of at least one sibling was unknown, the pair was not included in the study.

Treatment and study plan

Primary outcomes

  1. birthweight

    Time frame: 1 day

    change after FET than after fresh embryo transfer

Sponsors and collaborators

Lead sponsor

University Hospital, Montpellier

Other

Registry information

Official study title

Is Cryopreserved Embryo Replacement is Associated With Higher Birthweight Compared With Fresh Embryo ? Sibling Embryo Cohort Study

Important dates

Study start
2007
Primary completion
2015
Study completion
2015
First posted
Jun 18, 2019
Registry last updated
Jun 21, 2019

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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