MELVILLE, N.Y.--(BUSINESS WIRE)--OSI Pharmaceuticals, Inc. (NASDAQ: OSIP) announced today that Gabriel Leung, President, (OSI) Oncology, will present at the Bank of America Conference in Las Vegas, NV on Tuesday, May 13, 2008 at 12:40pm (Pacific Time). Mr. Leung will provide an overview on the Company’s product portfolio and business developments.