Each infant born from the procedure carries DNA from a man and two women. It involves transferring the nucleus from the fertilised egg of a woman carrying harmful mitochondrial mutations into a donated egg from which the nucleus has been removed.
For some carriers this is the only option because conventional IVF does not produce enough healthy embryos to use after pre-implantation diagnosis.
The researchers consistently reject the popular term “three-parent babies”, said Turnbull, “but it doesn’t make a scrap of difference.”
Here is more from Clive Cookson at the FT. From Newcastle. And here is some BBC coverage.
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