Researchers applied polygenic risk scores to 40,000 late-life individuals in the UK Biobank. They found that their test would have reduced the risk of choosing an embryo with a high chance of developing almost any of the 20 diseases they screened for. The study was posted to a preprint server and has not yet been peer reviewed.
Companies are offering genetic tests of embryos generated by in vitro fertilization that they say allow prospective parents to choose those with the lowest risk for diseases such as diabetes or certain cancers. However, some researchers are concerned about the accuracy and ethics of these tests.
This is an audio version of our Feature: The controversial embryo tests that promise a better baby
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