The presence of chromosomal abnormalities in embryos is very high following hormonal ovarian stimulation and in vitro fertilisation (IVF), occasionally exceeding 50%. Regardless of other medical reasons, part of these are thought to be caused by the type of treatment used to produce the embryos. This has now been evaluated for the first time in Human Reproduction, showing “a strong association between center-specific ART [artificial reproduction technologies] treatment practices and the incidence of chromosome abnormality in human embryos generated from human cycles“.
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