The Board of Directors of Allos has unanimously determined that the tender offer and the other transactions contemplated by the merger agreement are fair to and in the best interests of the Allos stockholders. The Board of Directors of Allos also approved the merger agreement, declared the merger agreement advisable and recommended that holders of shares of Allos common stock tender their shares in the tender offer and adopt the merger agreement, if adoption by Allos’ stockholders is required by applicable law.About Spectrum Pharmaceuticals, Inc. Spectrum Pharmaceuticals is a biotechnology company with a primary focus in oncology and hematology. Spectrum’s strategy is comprised of acquiring, developing and commercializing a broad and diverse pipeline of late-stage clinical and commercial drug products. Spectrum has aggressive business development and commercial operation teams that support a robust drug development program encompassing clinical development, medical research, regulatory affairs, biostatistics and data management. Spectrum also leverages the expertise of its worldwide partners to assist in the execution of its strategy. For more information, please visit Spectrum’s website at www.sppirx.com. About FOLOTYN ® FOLOTYN (pralatrexate injection), a folate analogue metabolic inhibitor, was discovered by Memorial Sloan-Kettering Cancer Center, SRI International and Southern Research Institute and developed by Allos Therapeutics. In September 2009, the U.S. Food and Drug Administration (FDA) granted accelerated approval for FOLOTYN for use as a single agent for the treatment of patients with relapsed or refractory PTCL. This indication is based on overall response rate. Clinical benefit such as improvement in progression-free survival or overall survival has not been demonstrated. FOLOTYN has been available to patients in the U.S. since October 2009. An updated analysis of data from PROPEL, the pivotal study of FOLOTYN in patients with relapsed or refractory PTCL, was published in the March 20, 2011 issue of the Journal of Clinical Oncology. FOLOTYN has patent protection through 2017, potentially through July 2022, assuming a five-year patent term extension through the Hatch-Waxman Act. Please see full Prescribing Information for FOLOTYN at www.FOLOTYN.com. Important FOLOTYN ® Safety Information Warnings and Precautions FOLOTYN may suppress bone marrow function, manifested by thrombocytopenia, neutropenia, and anemia. Monitor blood counts and omit or modify dose for hematologic toxicities.