NEWTOWN, Pa.--(BUSINESS WIRE)--CollaGenex Pharmaceuticals, Inc. (NASDAQ:CGPI) today announced that Colin W. Stewart, president and chief executive officer, will present at the Roth Capital Partners 19th Annual OC Conference. The presentation is scheduled to begin at 10:30 a.m. PST on Wednesday, February 21, 2007 at the Ritz Carlton Hotel in Laguna Niguel, California.