Genetics
Aneuploidy is the leading cause of failed implantation and early miscarriage, and it rises steeply with egg age. Most aneuploid embryos never implant or are lost early; some, such as trisomy 21, can result in an ongoing pregnancy.
Also known as: chromosomally abnormal, abnormal embryo
Related Canada guides
Sources
- Society of Obstetricians and Gynaecologists of Canada (SOGC) patient information
Last reviewed: September 9, 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.