A new reproductive technology is enabling scientists to analyze the DNA of embryos created through in vitro fertilization (IVF) and rank them by predicted traits. This process, known as polygenic embryo screening, examines thousands of genetic variants in an embryo’s DNA to calculate a score that predicts the likelihood of certain characteristics, such as disease risk or physical traits.
Polygenic screening goes beyond traditional genetic testing used in IVF. In the past, embryos were typically screened for serious genetic diseases caused by single-gene mutations. However, newer technologies aim to predict complex traits influenced by many genes acting together.
Although the technology may help reduce the risk of certain inherited diseases, many scientists argue that it remains unreliable and requires stronger regulation. Predicting complex traits such as intelligence or height is extremely difficult because they are influenced by thousands of genes and environmental factors.
This technology is significant because it raises major ethical and social concerns. Some experts worry that selecting embryos based on predicted traits could increase social inequality if only wealthy families can access these technologies. Others believe it could lead to a future where parents attempt to design children with preferred characteristics.
Overall, this research highlights both the potential and the challenges of modern genetic technology. While genetic screening could help reduce certain inherited diseases, scientists emphasize the need for careful regulation to ensure that these technologies are used responsibly.
Source:
https://www.livescience.com/health/genetics/new-tech-allows-parents-to-score-ivf-embryos-for-desirable-traits-and-its-in-desperate-need-of-regulation-opinion
Additional Link:
https://medlineplus.gov/genetics/understanding/testing/uses/
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