The first baby with 'three parents' has been born in the UK after a special IVF procedure which was pioneered in Newcastle.
Mitochondrial donation treatment (MDT) is a procedure which involves giving a woman an IVF baby with DNA from three individuals. Most of the baby's DNA will come from two parents, with around 0.1% from a donor.
The aim is to prevent children from being born with incurable mitochondrial diseases which can be fatal within days or even hours of birth.