LA JOLLA, Calif.--(BUSINESS WIRE)--Regulus Therapeutics Inc., a biopharmaceutical company leading the discovery and development of innovative new medicines targeting microRNAs, today announced that Lars Karlsson, M.D., Ph.D., has been named vice president of immunology and fibrosis. In this role, Dr. Karlsson will be responsible for leading the immunology and fibrosis drug discovery teams at Regulus.