Focuses on novel biopharmaceutical products, therapeutic platforms, and innovative biomedical technologies. Currently chairman of AvroBio, miRagen Therapeutics, Nimbus Therapeutics, Rodin Therapeutics, and Quartet Medicine, and also serves on the boards of Lysosomal Therapeutics, Magenta Therapeutics, Unum Therapeutics, and Zafgen (NASDAQ:ZFGN)