CAMBRIDGE, Mass.--(BUSINESS WIRE)--Idera Pharmaceuticals, Inc. (Nasdaq: IDRA) today announced the presentation of preclinical data from studies of IMO-3100 in combination with Enbrel (etanercept) in a mouse model of arthritis. IMO-3100, an antagonist of Toll-like Receptor (TLR) 7 and TLR9, is a lead drug candidate that Idera is developing for potential applications in autoimmune diseases. Enbrel is an inhibitor of TNF-alpha currently used for the treatment of rheumatoid arthritis. The presentation is being made at the 2009 Annual Scientific Meeting of the American College of Rheumatology and Association of Rheumatology Health Professionals (ACR/ARHP) being held in Philadelphia, PA, October 17-21.