Preimplantation Genetic Screening
Chromosomal analysis was performed by aCGH (array comparative genomic hybridization) or NGS (next-generation sequencing). Per iGenomix procedures and as specified by the manufacturer (Illumina), the 24sure aCGH platform has an effective 10-Mb resolution; therefore, only full chromosomal aneuploidies and segmental aneuploidies affecting chromosomal fragments larger than 10 Mb were identified30,35. Embryos were vitrified and transferred in subsequent natural or programmed cycles.