Baby saved by gene-editing therapy ‘graduates’ from hospital, goes home

December 19, 2025

A teddy bear being examined with a stethoscope

(ABC 7) – KJ Muldoon, a 10-month-old baby who sparked nationwide headlines after receiving a first-of-its kind gene-editing treatment, was released from the hospital this week.

KJ has spent the majority of his life at Children’s Hospital of Philadelphia after being diagnosed with a one-in-a-million, deadly genetic disease shortly after birth. Working quickly, his doctors were able to use new gene-editing technology called CRISPR, designing a bespoke treatment just for him. (Read More)