X @Forbes

Longtime drug developer Suma Krishnan was in her late-40s when she had the idea for a topical gene therapy to treat a rare and terrible skin disorder in which the skin becomes as fragile as butterfly wings. In 2016, at 51, after a few months of modeling the idea and starting the process of patenting it, she and her husband Krish Krishnan, with whom she’d worked in biotech for more than a decade, cofounded Krystal Biotech.See where she landed on the #Forbes250 America's Greatest Innovators list: https://t.co ...