Evelyne Vanneste

TL;DR: In this article, a new array-based method allowed screening of genome-wide copy number and loss of heterozygosity in single cells, which revealed not only mosaicism for whole-chromosome aneuploidies and uniparental disomies in most cleavage-stage embryos but also frequent segmental deletions, duplications and amplifications that were reciprocal in sister blastomeres, implying the occurrence of breakage-fusion-bridge cycles.

TL;DR: This study establishes that chromosome instability is also common during early human embryogenesis and identifies post-zygotic chromosome instability as a leading cause of constitutional chromosomal disorders.

TL;DR: Finding such a high rate of aneuploidy and mosaicism in excellent quality embryos from cycles with a high implantation rate warrants further research on the origin and significance of chromosomal abnormalities in human preimplantation embryos.

TL;DR: The hypothesis that patients with advanced maternal age (AMA) have a higher implantation rate (IR) after embryo transfer of embryos with a normal chromosomal pattern for the chromosomes studied with preimplantation genetic screening (PGS) compared with patients who had an embryo transfer without PGS was not confirmed.