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Article in Chinese | WPRIM | ID: wpr-981800

ABSTRACT

Chromosomal mosaicism (CM) is a common phenomenon in preimplantation genetic testing (PGT). In embryos with CM, genetic contents of trophoblastic ectodermal (TE) cells may be different from that of the inner cell mass (ICM) which will develop into the fetus. Embryos with low mosaic proportion could give rise to healthy live births after transplantation, but are accompanied with high pregnancy risks such as high abortion rate. In order to provide a more comprehensive understanding for CM embryos, this article has systematically summarized the recent progress of research on the definition, mechanism, classification, PGT techniques, self-correction mechanism, transplantation outcome and treatment principles for CM embryos.


Subject(s)
Pregnancy , Female , Humans , Preimplantation Diagnosis/methods , Mosaicism , Aneuploidy , Genetic Testing/methods , Blastocyst
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