Blastocysts needed to transfer at least one euploid embryo: data from 10,852 pre-implantation genetic screening (PGS) cycles

The objective of this study was twofold; first we wanted to determine the number of blastocysts needed at a certain age to produce at least one euploid blastocyst (>95%) through PGS using whole comprehensive chromosome screening. Secondly, we evaluated the chance of obtaining a euploid embryo in the next cycle after obtaining all aneuploid embryos.