NEWTOWN, Pa.--(BUSINESS WIRE)--CollaGenex Pharmaceuticals, Inc. (NASDAQ:CGPI) today announced that it will hold a conference call on Tuesday, August 7, 2007, at 11:00 a.m. Eastern Time to discuss the Company’s second quarter and first half 2007 financial results. A press release announcing the Company’s financial results will be released before the market opens on Tuesday, August 7, 2007.