CAMBRIDGE, Mass. & CARLSBAD, Calif.--(BUSINESS WIRE)--Regulus Therapeutics LLC, a joint venture between Alnylam Pharmaceuticals, Inc. (Nasdaq: ALNY) and Isis Pharmaceuticals, Inc. (Nasdaq: ISIS) formed to discover, develop, and commercialize microRNA therapeutics, announced today the appointment of Peter S. Linsley, Ph.D., as Chief Scientific Officer. Dr. Linsley has been instrumental in advancing the scientific understanding and therapeutic potential of microRNAs.