Morphometrics and Morphokinetics of Thawed Oocytes and Embryos
|ClinicalTrials.gov Identifier: NCT02639715|
Recruitment Status : Completed
First Posted : December 24, 2015
Last Update Posted : December 24, 2015
The aim of this observational study is to describe for the first time a complete set of morphometric and morphokinetic parameters of frozen-thawed human embryos in order to select the embryo with the highest implantation potential. These parameters will be correlated with (1) data of the fresh embryos and their subsequent survival, the evolution of the contact surfaces between surviving blastomeres and the resumption of mitosis; (2) patient characteristics and clinical outcome of frozen-thawed embryos and (3) a comparison between embryos cryopreserved with vitrification or the slow method regarding these parameters will be performed.
This project aims to introduce new evaluation criteria of the frozen-thawed embryos to improve success rate of FET cycles. By establishing new precise, reliable and non-invasive measurable parameters, we aim to (1) select which supernumerary embryos are at chance to survive the freezing/thawing procedures, (2) establish cut off parameters for the survival rate of the embryo, (3) assess implantation, pregnancy and live birth rates depending on the developmental characteristics after thawing and after 24h of culture.
Our strategy for improving the outcome of FET cycles is based on the study of morphometric and morphokinetic parameters in frozen-thawed embryos and the correlation with embryological, clinical and cycle parameters. Transferring a well-defined thawed embryo with a high implantation potential may lead towards an increase in the implantation and life birth rate and an increase in the cumulative live birth rate with a reduction of the IVF costs in order to optimize the health-economic situation of reproductive medicine.
|Condition or disease|
|Study Type :||Observational|
|Actual Enrollment :||1272 participants|
|Official Title:||Morphometrics and Morphokinetics of Thawed Oocytes and Embryos|
|Study Start Date :||January 2014|
|Actual Primary Completion Date :||December 2014|
|Actual Study Completion Date :||December 2015|
- embryo implantation (measured by the number of intrauterine fetal sacs on ultrasound per number of embryos transferred) after a thawing / warming cycle [ Time Frame: 6-7 weeks ]