Third Rock Ventures partner Kevin Starr decided not to stand for re-election as the chairman of Cambridge, MA-based Agios Pharmaceuticals (NASDAQ: AGIO), a company he helped found in 2007. At a shareholder meeting today, Rockefeller University president Marc Tessier-Lavigne was named Starr’s replacement. Tessier-Lavigne was already chairing Agios’s compensation committee. He’s also the chairman of the recently formed Denali Therapeutics. Agios also announced that former Goldman Sachs partner Maykin Ho joined its board.