Researchers say woman treated for neuroblastoma as a child is longest known survivor after having CAR T-cell therapy

A woman treated with a pioneering type of immunotherapy for a solid tumour has been in remission for more than 18 years with no further treatments, experts have revealed.

The therapy involves taking T-cells, a type of white blood cell, from a patient and genetically engineering them to target and kill cancer cells. These modified T-cells are grown in a laboratory and then infused back into the patient.