First precise genome editing of human embryos triggers praise and alarm

Researchers have used a precise genome-editing technique called base editing to alter the genome of human embryos for the first time, sparking both excitement and caution. This advancement could help fix disease-causing mutations in embryos, but there are concerns about its potential misuse for creating embryos with enhanced traits like intelligence. The study, led by Dieter Egli from Columbia University, has not yet been peer-reviewed. Base editing is considered more reliable than older CRISPR techniques, which have been controversial due to risks of unwanted genetic changes. The field is still haunted by the 2018 scandal involving Chinese scientist He Jiankui, who used CRISPR to edit embryos, leading to international outrage and his imprisonment. While base editing shows promise, experts warn that its application in embryos is premature due to potential risks. QUESTION: How might the ability to edit human embryos impact future generations, and what ethical considerations should guide its use?