Launch of "SIMPONI™”, a human TNFα monoclonal antibody in Taiwan

March 29, 2012 Press Release Mitsubishi Tanabe Pharma Corporation Launch of "SIMPONI TM”, a human TNFα monoclonal antibody in Taiwan Osaka, Japan, March 29, 2012 --- Mitsubishi Tanabe Pharma Corporation (President & CEO: Michihiro Tsuchiya) announced today that its consolidated subs idiary, Tai Tien Pharmaceuticals Co., Ltd. (head office: Taip ei, Taiwan), started marketing a human TNF α monoclonal antibody, “golimumab (genetical recombination)” under the brand name, SIMPONITM (golimumab) Solution for Injection, as a treatment for rheumatoid arthritis and ankylosing spondylitis, in Taiwan on March 5. SIMPONI® was discovered and developed by Janss en Biotech, Inc. as a treatment for inflammatory autoimmune diseases involving TNFα such as rheumatoid arthritis, and was first approved in the U.S. and Europe in 2009. It is approved in more than 50 countries. In Japan, Janssen Pharmaceutical K.K. obtained the manufacturing and ma rketing license in July 2011 for the treatment of rheumatoid ar thritis (including prevention of articular structural damage) in cases showing inadequate response to conventional therapies. Mitsubishi Tanabe Pharma and Janssen Pharmaceutical K.K. started co-marketing SIMPONI ® on September 16, 2011. In Taiwan, Janssen Taiwan will also be co-marketing this product. Through the launch of SIMPONI TM recently, Mitsubishi Tanabe Pharma expects to expand therapeutic options for patients of rheumatoid arthritis and ankylosing spondylitis in Taiwan, and will contribute to improving the treatment for a larger number of patients. <<Contact for Inquiries>> Mitsubishi Tanabe Pharma Corporation Corporate Communications Department Phone: +81-6-6205-5211

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