Segmental aneuploids
A 2025 study shows that segmental abnormalities detected by PGT-A in the trophectoderm don’t always match the ICM, suggesting that these embryos may still be viable for transfer.
Researchers in 2024 report on live births after segmental aneuploid transfers, finding that they have similar rates as high level mosaic segmental aneuploids.
Researchers in a 2022 study reported on the outcomes of 144 “abnormal” embryos, consisting of aneuploids and mosaics, finding a single live birth with an aneuploid and more favorable results with mosaics.
Researchers in a 2020 study performed a clinical trial and transferred aneuploid embryos, finding that no whole chromosome aneuploids led to a live birth, while segmental aneuploids did.