Despite the rosy predictions, embryo editing against disease is unsafe and has no proven success

Polygenic genome editing in human embryos can reduce the chances of certain diseases, but it raises new concerns of the threat of eugenics, according to a study published in the journal Nature Biotechnology. The researchers found that in some cases, editing a single variant associated with a polygenic disease can have strong effects. edit up to ten genes associated with a disease can reduce its lifetime prevalence.