Contract research organization Sygnature Discovery has appointed Dr. David Witty as its Chief Scientific Officer (CSO).   Witty is an industry veteran, who started his working life in a medicinal chemistry lab before going on to work for some of the biggest pharmaceutical companies in the world.   In his 30-year-plus career, he has led numerous integrated discovery and development programs across a wide range of therapeutic areas including neuroscience, metabolic diseases, oncology, and anti...