Gene Editing Is Trickier Than Expectedbut Fixes Are in Sight
Of all the big, world-remaking bets on the genome-editing tool known as Crispr, perhaps none is more tantalizing than its potential to edit some of humanity\u2019s worst diseases right out of the history books. Just this week, Crispr Therapeutics announced it had begun treating patients with an inherited blood disorder called beta thalassemia, in the Western drug industry\u2019s first test of the technology for genetic disease.