New Gene Variant Discovered: Key Link to Early Miscarriages Revealed

Researchers from Rutgers University-New Brunswick have made a significant discovery about a gene variant linked to early miscarriages in women. This variant, found in the gene KIF18A, is associated with accelerated reproductive aging, leading to a higher number of abnormal eggs and an increased risk of miscarriage.

The study highlights the importance of high-quality eggs for successful reproduction. Women with this genetic variant tend to produce eggs with aneuploidy, which means these eggs have an abnormal number of chromosomes. As women age, the likelihood of producing such eggs increases, but the variant causes younger women to experience accelerated egg aging.

Using data from a biobank at an in vitro fertilization clinic, the research team analyzed the genetics of women with high embryonic aneuploidy. They found that many of these women carried the KIF18A mutation. To confirm their findings, they conducted experiments on mice with the same genetic variant, which resulted in the mice producing more abnormal eggs at a younger age.

This research shows a causal relationship between the KIF18A variant and egg abnormalities. The authors believe their findings will lead to further discoveries regarding genetic variants linked to aneuploidy.

They hope that this research will pave the way for more precise reproductive treatments, allowing women to make informed decisions about fertility options based on their genetic information.

The study also involved contributions from several other researchers and was published in the Proceedings of the National Academy of Sciences.