For the first time ever, experimental gene editing technology has been used to treat a baby with a fatal condition. Just don’t mess with the embryos.


This episode was produced by Victoria Chamberlin, edited by Miranda Kennedy, fact checked by Avishay Artsy, engineered by Patrick Boyd and Andrea Kristinsdottir and hosted by Sean Rameswaram.

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Baby KJ as he prepares to leave the hospital. Photo courtesy of Children’s Hospital of Philadelphia.

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