POZEN Inc. (NASDAQ: POZN), a pharmaceutical company committed to transforming medicine that transforms lives, presented positive results from two pivotal Phase 3 clinical trials of the investigational product, PA32540, at The American Heart Association (AHA) Scientific Sessions 2012, as Poster #12057: Treatment Continuation and Cardiovascular Safety of Antiplatelet Therapy with PA32540, A Tablet with Enteric-Coated Aspirin and Immediate-Release Omeprazole: Results of Two 6-Month, Phase 3 Studies. Each study achieved its individual primary endpoint, as patients on PA32540 experienced fewer gastric ulcers compared to those taking enteric-coated aspirin (325 mg) alone. Data for the primary endpoint are shown below:
"The results of these Phase 3 pivotal studies are promising and report the important role that PA32540 may play in the long-term management of cardiovascular protection," said Chris O'Connor, M.D., Director, Duke Heart Center, Duke University Hospital and one of the authors of the studies. "Discontinuation of aspirin therapy is often due to the adverse GI effects of aspirin. In these pivotal studies, PA32540 was associated with a significantly lower rate of treatment discontinuation than aspirin alone. Patient adherence to aspirin therapy saves lives, as aspirin discontinuation increases the likelihood of potential adverse cardiovascular events."
A summary of discontinuation rates of the combined data are shown below:
In addition, the results from the combined data from the two studies demonstrated that patients on PA32540, compared to those on enteric-coated aspirin (325 mg), were able to stay on therapy longer due to fewer discontinuations to any adverse events (6.7% vs. 11.2%).
In the combined data from the two trials, 85.1% of subjects on enteric-coated aspirin (325 mg) reported adverse events compared to 71.8% of subjects on PA32540. The most commonly reported adverse events with PA32540 and enteric-coated aspirin (325 mg) were of the GI tract and include dyspepsia (11.3% vs. 30.2%), erosive gastritis (11.5% vs. 26.3%), and gastritis (17.5% vs. 16.0%) respectively. The incidence and nature of adjudicated Major Adverse Cardiac Events (MACE) such as heart attacks was similar between the 2 treatment arms: 9 subjects (1.7%) on PA32540 experienced adjudicated MACE compared to 13 subjects (2.5%) on aspirin (325 mg). Please see the complete AHA poster, available at www.pozen.com, for more detail of the study results.