A baby who has three biological parents was born in the world. Although the practice was known as controversial technique, doctors from U.S team based in Mexico applied genetic mutation to born a healthy baby.
Shaban, the baby's mother, carries gens for Leigh syndrome as genetic disorder. Her first two children could not be saved from birth because of Leigh syndrome even though the mother was healthy. So she decided to get help from the New Hope Fertility Center in New York.
The doctors at the institution advised to do 'spindle nuclear transfer. Shaban's egg was removed and inserted it into a donor egg which had had its nucleus removed. Then the egg was fertilized with her couple. Nine months later, the baby was born since it was implanted in Shaban's womb. When the baby's mitochondria were tested, the result showed that less than 1% Leigh syndrome was found.
Since the baby grew up, the doctors always monitor the baby to make sure that the levels of the Leigh syndrome remain as low.