AstraZeneca’s Partner, POZEN Informed By FDA That Gastric Ulcers Are Valid Primary Endpoint In PN 400 Trials

Thursday, 29 January 2009 POZEN Inc., AstraZeneca’s co-development partner for the investigational compound PN 400, has been informed that the US Food and Drug Administration (FDA) has completed its internal discussions and that there is no change to the previous agreements that gastric ulcer incidence is an acceptable primary endpoint for the PN 400 Phase III clinical programmes. In October, the FDA had announced that they were conducting an internal review on the acceptability of gastric ulcers as a primary endpoint in clinical studies. PN 400 is a fixed dose combination of enteric-coated naproxen with immediate release esomeprazole for the treatment of the signs and symptoms of osteoarthritis, rheumatoid arthritis, and ankylosing spondylitis in patients who are at risk of developing NSAID associated gastric ulcers. The two pivotal ulcer risk reduction studies have completed and met their primary endpoints. In both studies, patients taking PN 400 experienced significantly fewer endoscopically confirmed gastric ulcers compared to subjects receiving enteric-coated naproxen during the six-month treatment period. Two additional Phase III studies are still ongoing. Upon completion of the entire PN400 Phase III clinical programme, AstraZeneca will make a final determination regarding regulatory filing. A regulatory submission for PN400 in the US is currently planned for mid 2009. NOTES TO EDITORS: About PN 400 PN 400 is an investigational compound under co-development by AstraZeneca and POZEN, Inc. that combines the pain reliever naproxen (a non-steroidal anti-inflammatory drug, or NSAID) with esomeprazole – a proton pump inhibitor (PPI), for the treatment of osteoarthritis, rheumatoid arthritis, and ankylosing spondylitis in patients who are at risk of developing gastric ulcers. About AstraZeneca AstraZeneca is a major international healthcare business engaged in the research, development, manufacturing and marketing of meaningful prescription medicines and supplier for healthcare services. AstraZeneca is one of the world's leading pharmaceutical companies with healthcare sales of $29.55 billion and is a leader in gastrointestinal, cardiovascular, neuroscience, respiratory, oncology and infectious disease medicines. For more information about AstraZeneca, please visit: www.astrazeneca.com CONTACTS: Media Enquiries: Neil McCrae +44 207 304 5045 (24 hours) Chris Sampson +44 20 7304 5130 (24 hours) Sarah Lindgreen +44 20 7304 5033 (24 hours) Investor Enquiries UK: Jonathan Hunt +44 207 304 5087 mob: +44 7775 704032 Karl Hard +44 207 304 5322 mob: +44 7789 654364 Investor Enquiries US: Ed Seage +1 302 886 4065 mob: +1 302 373 1361 Jorgen Winroth +1 212 579 0506 mob: +1 917 612 4043 tags Corporate and financial AstraZeneca Websites This website is intended for people seeking information on AstraZeneca's worldwide business. Our country sites can be located in the AZ Network. Veeva ID: Z4-8411 Date of next review: August 2020 Resources All resources Open Innovation Externally sponsored scientific research Medical Information for HCPs US prescription assistance programmes Global clinical trials information Medicines Report a possible side effect Pearl Therapeutics Quick links Media Investor Relations Partnering Careers Sustainability Modern Slavery Statement Supplier information Social Media Community Guidelines Social Media LinkedIn Twitter YouTube Instagram Glassdoor Facebook utility links Legal notice and Terms of Use Privacy notice Cookie policy Site map Contact us © AstraZeneca 2020 You are now leaving AstraZeneca.com You have selected a link that will take you to a site maintained by a third party who is solely responsible for its contents. AstraZeneca provides this link as a service to website visitors. AstraZeneca is not responsible for the privacy policy of any third party websites. We encourage you to read the privacy policy of every website you visit. Click ‘cancel’ to return to AstraZeneca’s site or ‘continue’ to proceed. Cancel Continue ? Important notice for users You are about to access AstraZeneca historic archive material. Any reference in these archives to AstraZeneca products or their uses may not reflect current medical knowledge and should not be used as a source of information on the present product label, efficacy data or safety data. Please refer to your approved national product label (SmPC) for current product information. I have read this warning and will not be using any of the contained product information for clinical purposes. I disagree I agree ? ?

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