PTC Therapeutics, Inc. (PTC) announced new data suggesting that the quantification of cough frequency may offer a clinically meaningful outcome measure in cystic fibrosis (CF). Cough is one of the most prominent and burdensome disease-related symptoms in CF. According to data presented today at the 2008 International Conference of the American Thoracic Society, patients with CF cough a remarkable 324 to 1,569 times per day, with an average of 643 coughs per day.
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