Cell Therapeutics Exercises Its Option to Sell Interest in Zevalin Joint Venture to Spectrum Pharmaceuticals for $...(embership interest in the joint venture ...)

Date:2/20/2009

embership interest in the joint venture to Spectrum, CTI will receive $6 million, with the remainder of the $18 million to be paid within 90 days following such closing. The closing of the sale option transaction is contingent upon the satisfaction of certain closing conditions, including the delivery of a legal opinion from counsel to CTI, as specified in the operating agreement for the Zevalin joint venture. CTI believes that it will be in a position to promptly satisfy all of the closing conditions.

About Zevalin(R)

Zevalin(R) (Ibritumomab Tiuxetan) is a form of cancer therapy called radioimmunotherapy and is indicated as part of the Zevalin therapeutic regimen for treatment of relapsed or refractory, lowgrade or follicular B-cell non-Hodgkin's lymphoma, including patients with rituximab refractory follicular NHL. Zevalin is also indicated, under accelerated approval, for the treatment of relapsed or refractory, rituximab-naive, low-grade and follicular NHL based on studies using a surrogate endpoint of overall response rate. It was approved by the FDA in February of 2002 as the first radioimmunotherapeutic agent for the treatment of NHL.

Rare deaths associated with an infusion reaction symptom complex have occurred within 24 hours of rituximab (Rituxan(R)) infusions. Yttrium-90 Zevalin administration results in severe and prolonged cytopenias in most patients. Severe cutaneous and mucocutaneous reactions have been reported. The most serious adverse reactions of the Zevalin therapeutic regimen were primarily hematologic, including neutropenia, thrombocytopenia and anemia. Infusion-related toxicities were associated with pre-administration of rituximab. The risk of hematologic toxicity correlated with the degree of bone marrow involvement prior to Zevalin therapy. Myelodysplasia or acute myelogenous leukemia was observed in 2 percent of patients (8 to 34 months after treatment). Zevalin should only be use
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SOURCE Cell Therapeutics, Inc. Copyright©2009 PR Newswire. All rights reserved

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