NEW YORK, NY, USA I July 25, 2013 I Pfizer Inc. (PFE) announced today that the Committee for Medicinal Products for Human Use (CHMP) of the European Medicines Agency (EMA) has confirmed its April 25, 2013, opinion to recommend against approval of XELJANZ® (tofacitinib citrate) for the treatment of adult patients with moderate-to-severe active rheumatoid arthritis (RA). After re-examination of the application as requested by Pfizer, the CHMP is of the opinion that XELJANZ does not demonstrate a favorable benefit:risk profile.

While the CHMP considered that treatment with XELJANZ resulted in reduction in the signs and symptoms of RA and improvement in the physical function of patients, it has outstanding concerns on safety, including serious infections.

The Company is currently evaluating the feedback from the CHMP and will determine next steps to resubmit a MAA to the EMA.

“We are disappointed in the outcome of the re-examination process. A narrow majority of the CHMP felt there is too limited experience in the patient population to fully characterize the profile of XELJANZ and the Committee did not recommend approval at this time,” said Dr. Steven Romano, senior vice president and the head of the Medicines Development Group for Pfizer Specialty Care. “The clinical experience with XELJANZ to date, which includes data from approximately 5,000 patients treated for RA, demonstrates a consistent efficacy and safety profile across a range of patient types and a risk profile that is familiar to rheumatologists who have experience utilizing the range of treatments available to treat this disease. We believe that the benefit:risk profile of XELJANZ is favorable, and we remain committed to working with the EMA to make XELJANZ available to appropriate patients in Europe.”

About the Marketing Authorization Application

The MAA included data from the comprehensive, global, multi-study clinical development program for XELJANZ, which included approximately 5,000 patients across Phase 2 and Phase 3 trials in more than 40 countries, resulting in 7,000 patient-years of exposure at the time of regulatory submission. The application was based on the same pivotal efficacy and safety data package that was provided to regulatory agencies around the world.

About Rheumatoid Arthritis

A is a chronic inflammatory autoimmune disease that typically affects the hands and feet, although any joint lined by a synovial membrane may be affected. RA affects approximately 23.7 million people worldwide and 6.2 million in Europe.1 Although multiple treatments are available, many patients do not adequately respond. Specifically, up to one-third of patients do not adequately respond and about half stop responding to any particular non-biologic disease-modifying antirheumatic drug (DMARD) within five years.2,3,4,5,6,7 There remains a need for additional therapeutic options.

About XELJANZ

XELJANZ is a novel, oral Janus kinase (JAK) inhibitor for the treatment of RA. Unlike recent therapies for RA, which are directed at extracellular targets such as pro-inflammatory cytokines, XELJANZ takes a novel approach targeting the intracellular pathways that operate as hubs in the inflammatory cytokine network.

XELJANZ is approved in the United States, Japan, Argentina, Kuwait, Russia, Switzerland and the United Arab Emirates for the treatment of adults with moderate-to-severe active RA.

Pfizer Inc.: Working together for a healthier world®

At Pfizer, we apply science and our global resources to bring therapies to people that extend and significantly improve their lives. We strive to set the standard for quality, safety and value in the discovery, development and manufacture of health care products. Our global portfolio includes medicines and vaccines as well as many of the world’s best-known consumer health care products. Every day, Pfizer colleagues work across developed and emerging markets to advance wellness, prevention, treatments and cures that challenge the most feared diseases of our time. Consistent with our responsibility as one of the world’s premier innovative biopharmaceutical companies, we collaborate with health care providers, governments and local communities to support and expand access to reliable, affordable health care around the world. For more than 150 years, Pfizer has worked to make a difference for all who rely on us. To learn more, please visit us at www.pfizer.com.

1 World Health Organization, “The Global Burden of Disease, 2004 Update.” Accessed 13 March 2012. Available at http://www.who.int/healthinfo/global_burden_disease/GBD_report_2004update_full.pdf.

2 Klareskog L, Van der Heijde D, de Jager J, et al. Therapeutic effect of the combination of etanercept and methotrexate compared with each treatment alone in patients with rheumatoid arthritis: double-blind randomized controlled trial. The Lancet 2004. 363: 675-681

3 Keystone, E, Kavanaugh A, Sharp J, et al. Radiographic, clinical and functional outcomes of treatment with adalimumab (a human anti-tumor necrosis factor monoclonal antibody) in patients with active rheumatoid arthritis receiving concomitant methotrexate therapy. Arthritis & Rheumatism 2004. 50: 1400-1411

4 Lipsky, P, Van der Heijde, D, St. Clair, W. Infliximab and methotrexate in the treatment of rheumatoid arthritis. The New England Journal of Medicine 2000. 1594-1602.

5 Duclos M, Gossec L, Ruyssen-Witrand A, et al. Retention rates of tumor necrosis factor blockers in daily practice in 770 rheumatic patients. J Rheumatol 2006; 33:2433-8.

6 Maradit-Kremers H, Nicola PJ, Crowson CS, et al. Patient, disease, and therapy-related factors that influence discontinuation of disease-modifying antirheumatic drugs: a population-based incidence cohort of patients with rheumatoid arthritis. J Rheumatol 2006; 33(2):248-55.

7 Blum MA, Koo D, Doshi JA. Measurement and rates of persistence with and adherence to biologics for rheumatoid arthritis: a systematic review. Clin Ther 2011;33(7):901-913.

SOURCE: Pfizer