What is the primary purpose of PGT-A?

The primary purpose of preimplantation genetic testing for aneuploidy (PGT-A) is to identify chromosomal abnormalities in embryos prior to their implantation during in vitro fertilization (IVF). Aneuploidy refers to the presence of an abnormal number of chromosomes in a cell, which can lead to developmental issues, miscarriages, or genetic conditions in the offspring. By screening for aneuploidy, PGT-A helps increase the chances of a successful pregnancy and can improve the overall outcomes of IVF procedures by selecting the embryos that are likely to be chromosomally normal.

This approach is particularly beneficial for individuals or couples who may have a higher risk of chromosomal abnormalities due to advanced maternal age or a history of miscarriages. By ensuring that only embryos with the correct number of chromosomes are implanted, PGT-A plays a crucial role in reproductive medicine.

The other options listed, although they serve important purposes in genetic testing, do not align with the primary aim of PGT-A. Structural rearrangement testing focuses on identifying larger chromosomal abnormalities, monogenic conditions testing is aimed at detecting specific single-gene disorders, and sex selection generally pertains to choosing the sex of the child rather than addressing chromosomal composition. These approaches may