Boy born with no immune system thriving thanks to experimental stem cell gene therapy

Credit: PA/GOSH

By Claudia Tanner and Bairbre Holmes, PA

When he was just three weeks old, Andy Cash was diagnosed with a rare life-threatening condition that’s usually fatal by the age of two if left untreated.

Having adenosine deaminase deficient severe combined immunodeficiency (ADA-SCID), his future looked bleak: day-to-day activities like going to school or playing with friends can lead to a dangerous infection.