CLEVELAND – Coming into the Cleveland Clinic's 15th annual Medical Innovation Summit, gene therapy had been making headlines, most recently the unanimous recommendation by the FDA's Cellular, Tissue and Gene Therapies Advisory Committee in favor of Spark Therapeutics Inc.'s Luxturna (voretigene neparvovec) in RPE65-mediated inherited retinal disease. But back in the early 2000s, when Casey Cunningham, of Sante Ventures, was working as a clinical investigator, the gene-based technologies weren't exactly hot property.