Doctors announced this week that they have treated a newborn baby with a rare genetic disease using the world’s first personalized gene editing therapy. Geoff Bennett discussed the treatment and its ...

KJ Muldoon became the first patient to undergo personalized CRISPR treatment, a therapy that found the one uniquely mutated gene out of 20,000 in his little body, and fixed it.

The goal is to reuse key parts of the treatment and simply swap in a custom set of instructions for each patient's specific gene mutation, doctors say.