Video Report by Rob Smith
A young bride-to-be from Liverpool is alive to plan her big day, thanks to a remarkable genetic treatment for leukaemia.
Sophie Mulligan, who's 24, knew she'd exhausted every main treatment for the disease after being diagnosed in 2015.
But Sophie's time wasn't up. Doctors offered a rare treatment called CAR-T to train her immune system to fight leukaemia by itself. A lab in the United States took a sample of her blood and extracted disease-fighting cells. Scientists genetically reprogrammed those to find and destroy the cancer.
And, unbelievably, they did it at the peak of the pandemic.
It got me into complete remission after four weeks, and we're talking the most sensitive testing that they can do to look for Leukaemia came back completely clear.