ATLANTA & CAMBRIDGE, Mass.--(BUSINESS WIRE)--June 5, 2006--ARIAD Pharmaceuticals, Inc. (Nasdaq: ARIA - News) today announced that AP23573 - its novel mTOR inhibitor - demonstrated efficacy and was well tolerated as a single agent in a multi-center Phase 2 trial in metastatic and/or unresectable soft-tissue and bone sarcomas involving 212 patients, at least 90% of whom had progressive disease. The primary end-point of the trial - evidenced by clinical-benefit response rates - was achieved in the three most prevalent types of sarcoma (i.e., bone sarcoma, leiomyosarcoma and liposarcoma). Treatment with AP23573 more than doubled progression-free survival when compared to historical control data published by the European Organization for Research and Treatment of Cancer (EORTC).