The UK Department of Health has reviewed the three person IVF technique and roundly supported its use to prevent mitochondrial disease in newborn children. A number of details must be addressed prior to sending the plans to Parliament, but this is a huge step forward towards legalizing this promising form of IVF. Hopefully the FDA will follow suit.
Among the recommendations sent to Parliament is a suggestion that each application is evaluated on a case by case basis by the Human Fertilisation Embryology Authority. This check will be in place to prevent the technique from being misused and, hopefully, will help limit the concerns about the slippery slope to "designer babies." A concern that I'll stress is, at this point, completely unfounded.