LESSON 5 · The DNA Blueprint
Medical Breakthroughs
Casgevy, approved in 2023, was the first CRISPR therapy any regulator had ever cleared — a milestone moment for the whole field. It signaled that gene editing had finally crossed from the lab into approved medicine. The pipeline is growing fast: CRISPR trials for inherited blindness and for re-arming the immune system against cancer are now underway too.