Â鶹Éç

Available for over a year

An amazing medical breakthrough - A one-year-old British girl is the first person in the world to benefit from genetic engineering which until now has only been tested on mice. Layla Richards, who doctors originally said would not survive her incurable aggressive leukaemia, is in remission, and already home with her parents. Our Health correspondent, James Gallagher explains. (Photo: Layla Richards with her parents Lisa Foley and Ashleigh Richards and eight year old sister Reya) (Credit: Great Ormond Street Hospital / PA)