Spark Therapeutics is preparing to seek the first-ever US FDA approval for a gene therapy after several people who couldn't read a menu in a dimly lit restaurant or take a walk alone at dusk had their vision restored in a Phase III clinical trial testing SPK-RPE65.
Two-thirds of the 21 people with RPE65-mediated inherited retinal dystrophies (IRDs) who were treated with SPK-RPE65 in a 31-patient Phase...






