Britain's fertility regulator on Wednesday confirmed the births of the U.K.'s first babies created using an experimental technique combining DNA from three people, an effort to prevent the children from inheriting rare genetic diseases.
Britain's Human Fertilization and Embryology Authority said fewer than five babies have been born this way in the U.K. but did not provide further details to protect the families' identities. The news was first reported by the Guardian newspaper.In 2015, the U.K. became the world's first country to adopt legislation specifically regulating methods to help prevent women with faulty mitochondria -- the energy source in a cell -- from passing defects on to their babies.
The fertilized embryo is then transferred into the womb of the mother. The genetic material from the donated egg comprises less than 1% of the child created from this technique. Many critics oppose the artificial reproduction techniques, arguing there are other ways for people to avoid passing on diseases to their children, such as egg donation or screening tests, and that the experimental methods have not yet been proven safe.
"It will be interesting to know how well the technique worked at a practical level, whether the babies are free of mitochondrial disease and whether there is any risk of them developing problems later in life," he said in a statement.
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