UK Takes Step Toward ‘Three-Parent Babies’

London (CNN) — The United Kingdom took a step Friday toward being the first country in the world to allow a pioneering in vitro fertilization technique using DNA from three people that could prevent mitochondrial diseases but that also raises significant ethical issues.

One in 6,500 babies in the United Kingdom is born with mitochondrial disorder, which can lead to serious health issues such as heart and liver disease, respiratory problems and muscular dystrophy.

Problems with mitochondria, the “powerhouse” cells of the body, are inherited from the mother, so the proposed IVF treatment would mean an affected woman could have a baby without passing on mitochondrial disease.

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