Santarus, Inc. (NASDAQ:SNTS) today announced that data from its Phase I clinical study with its investigational drug SAN-300, a novel antibody that inhibits very late antigen-1 (VLA-1; α1β1 integrin), will be featured in a poster presentation at the 2013 American College of Rheumatology. Based on the Phase I study results, Santarus is preparing to initiate a multicenter, randomized, placebo-controlled, multiple ascending dose, Phase IIa clinical study with subcutaneous administration of SAN-300 in patients with active rheumatoid arthritis (RA). The company expects to initiate the Phase IIa study in the fourth quarter of 2013. The poster (#1439) is titled, Safety, Pharmacokinetics and Pharmacodynamics of SAN-300, a Novel Monoclonal Antibody Against Very Late Antigen-1: Results of a Phase I Study in Healthy Volunteers and Patients with Active Rheumatoid Arthritis, and will be exhibited on Monday, October 28, 2013 from 8:30 a.m. to 4:00 p.m. Pacific Time at the San Diego Convention Center, Exhibit Hall B2-C-D. About Santarus Santarus, Inc. is a specialty biopharmaceutical company focused on acquiring, developing and commercializing proprietary products that address the needs of patients treated by physician specialists. The company's current commercial efforts are focused on five products. UCERIS® (budesonide) extended release tablets for the induction of remission in patients with active, mild to moderate ulcerative colitis and ZEGERID® (omeprazole/sodium bicarbonate) for the treatment of certain upper gastrointestinal disorders are promoted to gastroenterologists. GLUMETZA® (metformin hydrochloride extended release tablets) and CYCLOSET® (bromocriptine mesylate) tablets, which are indicated as adjuncts to diet and exercise to improve glycemic control in adults with type 2 diabetes, and FENOGLIDE® (fenofibrate) tablets, which is indicated as an adjunct to diet to reduce high cholesterol, are promoted to endocrinologists and other physicians who treat patients with type 2 diabetes. Full prescribing and safety information for Santarus’ products is available at www.santarus.com or by contacting Santarus at 1-888-778-0887. Santarus’ product development pipeline includes the investigational drug RUCONEST ® (recombinant human C1 esterase inhibitor). A Biologics License Application for RUCONEST for the treatment of acute angioedema attacks in patients with hereditary angioedema is under review by the U.S. Food and Drug Administration with a response expected in April 2014. Santarus is also developing rifamycin SV MMX ®, which is in Phase III clinical testing for treatment of travelers’ diarrhea. In addition, the company has completed a Phase I clinical program with SAN-300, an investigational monoclonal antibody. More information about Santarus is available at www.santarus.com. Santarus cautions you that statements included in this press release that are not a description of historical facts are forward-looking statements. The inclusion of forward-looking statements should not be regarded as a representation by Santarus that any of its plans or objectives will be achieved. Actual results may differ materially from those set forth in this release due to the risks and uncertainties inherent in Santarus’ business, including, without limitation: whether Santarus is able to commence the planned Phase IIa study for SAN-300 in a timely manner or at all; whether, if commenced, Santarus is able to complete the planned Phase IIa study in a successful and timely manner; unexpected adverse side effects or inadequate therapeutic efficacy of Santarus’ products and product candidates; the scope and validity of patent protection for Santarus’ products and product candidates; and other difficulties or delays relating to the development, testing, manufacturing and marketing of, and obtaining and maintaining regulatory approvals for, Santarus’ products and product candidates; and other risks detailed in Santarus’ prior press releases as well as in prior public periodic filings with the Securities and Exchange Commission, including its Quarterly Report on Form 10-Q for the quarter ended June 30, 2013. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof. All forward-looking statements are qualified in their entirety by this cautionary statement and Santarus undertakes no obligation to revise or update this news release to reflect events or circumstances after the date hereof. This caution is made under the safe harbor provisions of Section 21E of the Private Securities Litigation Reform Act of 1995. Santarus ® , FENOGLIDE ® , UCERIS ® and ZEGERID ® are registered trademarks of Santarus, Inc. GLUMETZA ® is a trademark of Biovail Laboratories International S.r.l. licensed exclusively in the United States to Depomed, Inc. CYCLOSET ® is a trademark of VeroScience LLC. MMX ® is a trademark of Cosmo Technologies Limited. RUCONEST ® is a trademark of Pharming Group N.V.