The main objective of this study is to improve niPGT-A (non-invasive Preimplantation Genetic Testing for Aneuploidies) to avoid the need of a biopsy to perform the genetic analysis of the embryo and to help in understanding the genetic constitution of different parts of the blastocyst (early stage of an embryo development). For this purpose, we aim to analyses the genetic material released by the embryo to the culture medium (also called Spent Blastocyst Media, SBM) from about 200 blastocysts donated to research by participants of assisted reproduction treatments. The results will be correlated with the ones obtained from performing the same analysis on biopsies taken from the outer (trophectoderm, TE) and the inner (inner cell mass, ICM) layer of cells in different locations to investigate the mechanisms and origin of the blastocyst genetic content released to the culture medium during preimplantation embryo development.
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Chromosomal status of the embryos
Timeframe: Up to 6/7 days of embryo development