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UK takes step toward 'three-parent babies'


By Laura Smith-Spark, CNN
June 28, 2013 -- Updated 2231 GMT (0631 HKT)

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An in vitro fertilization technique using DNA from three people could prevent mitochondrial diseases.

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.

But University of Notre Dame law professor O. Carter Snead, a bioethicist who specializes in the governance of science, medicine and biotechnology, urged the United Kingdom to "proceed slowly and cautiously" given the "unresolved safety and ethical questions" around the new technique.

"Little is known about the short- and long-term genetic effects of this procedure on children born with its aid," he said. "It would be an ironic tragedy if this procedure were rushed from bench to bedside, only to harm the very children it was meant to help.

"Moreover, there remain serious questions about the ethics of conceiving children with three genetic progenitors or 'parents.' "

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