A Jordanian couple welcomed their son on April 6 after some genetic splicing in Mexico meant to ensure the baby wouldn’t inherit a fatal condition that the mother carries. He’s the world’s first so-called three-parent baby using a new IVF technique.
The Jordanian woman is a carrier of a fatal disorder called Leigh syndrome. She and her husband have had four miscarriages and lost two children, one at age 6 and another at 8 months. The three-parent-baby IVF technique replaces a mother’s mitochondrial DNA with that from a donor; it has no effect on appearance or personality traits.