Spectrum Pharmaceuticals, Inc. and Allos Therapeutics, Inc. Announce That Federal Trade Commission Clears Transaction; Tender Offer for Shares of Allos Common Stock to Expire at 5pm Eastern Time on September 4, 2012

HENDERSON, Nev. & WESTMINSTER, Colo.--(BUSINESS WIRE)--Spectrum Pharmaceuticals, Inc. (NasdaqGS: SPPI) (Spectrum) and Allos Therapeutics, Inc. (NasdaqGS: ALTH) (Allos) today announced that the Federal Trade Commission terminated the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, relating to the previously announced pending acquisition of all outstanding shares of common stock of Allos by Spectrum.