Fig. 1.

Summary of the definitions outlined in this consensus paper by the Italian Society of Embryology, Reproduction and Research (SIERR) and the Italian Society of Human Reproduction (SIGU) to categorize human embryos during IVF cycles as developmentally competent preimplantation embryos (DeCE), developmentally competent preimplantation embryos of undefined reproductive competence (DeCURC), and developmentally incompetent preimplantation embryos (DIPE). Embryos affected from monogenic conditions and/or aneuploidies compatible with a pregnancy beyond the 1st trimester (written among DeCE in gray) might result in a syndromic child therefore cannot be considered neither DeCURC nor DIPE. Only aneuploidies in the uniform range compatible with a meiotic constitutive abnormality were considered to define DIPE. The risk for clinically meaningful false-positive assessments is indeed minimal for them. Any reported chromosomal abnormality other than these outlines a DeCURC. PN pronuclei