Did they provide a list of variants in the paper? If so, selection among embryos for the trait could be done now via IVF and Preimplantation Genetic Diagnosis.

Did they provide a list of variants in the paper? If so, selection among embryos for the trait could be done now via IVF and Preimplantation Genetic Diagnosis. Most companies wouldn't offer the service due to unwanted PR but any competent bioinformatician could do it given the data, I'm sure some would do it for bitcoin. Modifying humans is prohibited and dangerous with current technology due to off target effects.