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According to this strategy, a better embryo selection should increase IVF results. In reality, several issues remain unaddressed including the sampling strategy, involving the test outcomes, and the frequent occurrence of embryo mosaicism, affecting the criteria for selection of supposed viable embryos and possibly posing an ethical dilemma. Safety issues are in place, including perinatal and postnatal consequences of embryo sampling and the epigenetic weaknesses from a prolonged in vitro culture, necessary for trophectoderm biopsy. On the other side, chromosome number mistakes are progressively recognized as physiologic events in the early pre\u2010implantation embryo with many corrective mechanisms in place and their destiny in the post\u2010implantation development is unclear. Accordingly, the increasing precision of the diagnostic tools should be used to investigate the effect of such interventions within rigorous research programs in the sake of improved clinical outcomes. Meantime the diagnosis of embryo aneuploidies in IVF cycles should be considered as a research tool and systematic implementation in clinical practice may appear unjustified.<\/jats:p>","DOI":"10.1111\/cge.13732","type":"journal-article","created":{"date-parts":[[2020,3,6]],"date-time":"2020-03-06T03:19:02Z","timestamp":1583464742000},"page":"107-115","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":33,"title":["PGT\u2010A preimplantation genetic testing for aneuploidies and embryo selection in routine ART cycles: Time to step back?"],"prefix":"10.1111","volume":"98","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7698-8823","authenticated-orcid":false,"given":"Romualdo","family":"Sciorio","sequence":"first","affiliation":[{"name":"Edinburgh Assisted Conception Programme, EFREC Royal Infirmary of Edinburgh  Edinburgh 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