The most common treatment-emergent adverse events (>10%) while on ALO-02 were nausea, constipation, vomiting and headache. The most common serious adverse events were acute myocardial infarction, non-cardiac chest pain, pneumonia, convulsion, and kidney stones, each of which occurred in 2 patients. A total of 237 (60%) patients discontinued from the study over the one-year study period, with 19 percent of patients reporting adverse events as the primary reason for discontinuation. The adverse events that most commonly (>2%) lead to discontinuation were nausea and constipation. The discontinuation rate was within the expected range based on similar long-term safety studies with other extended-release opioid formulations.
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DISCLOSURE NOTICE: The information contained in this release is as of October 11, 2012. Pfizer assumes no obligation to update forward-looking statements contained in this release as the result of new information or future events or developments.This release contains forward-looking information about a product candidate, ALO-02, including its potential benefits, that involves substantial risks and uncertainties. Such risks and uncertainties include, among other things, the uncertainties inherent in research and development; decisions by regulatory authorities regarding whether and when to approve any drug applications that may be filed for ALO-02 as well as their decisions regarding labeling and other matters that could affect its availability or commercial potential; and competitive developments. A further description of risks and uncertainties can be found in Pfizer’s Annual Report on Form 10-K for the fiscal year ended December 31, 2011 and in its reports on Form 10-Q and Form 8-K.