The NEET Registry: a Prospective, Observational Study for Outcomes of Non-euploid Embryo Transfers (NEET)

Preimplantation Genetic Testing for Aneuploidy (PGT-A) is widely offered as an option for patients pursuing pregnancy through in vitro fertilization (IVF). Most often, embryos with normal chromosome results are selected for transfer, with well established outcomes. However, for patient specific reasons, transferring an embryo with a non-euploid result (i.e. mosaic, isolated segmental aneuploid or aneuploidy of whole chromosome(s)) may be considered. Very little information is available on the long-term outcomes of mosaic embryo transfer. Even less has been published on outcomes for other types of non-euploid results. This study aims to collect prenatal, neonatal and pediatric outcome information for embryos transferred with the various types of non-euploid PGT-A results to better inform providers and patients in their decision making regarding such transfers.