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Pixantrone in Combination with Fludarabine, Dexamethasone and Rituximab Produces High Rates of Complete Remissions in Patients with Relapsed or Refractory Indolent Non-Hodgkins Lymphoma
Date:6/16/2011

02/(ISSN)1097-0142/earlyview">http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1097-0142/earlyview.

About Pixantrone

Pixantrone is a novel aza-anthracenedione that has distinct structural and physio-chemical properties that make its anti-tumor activity unique in this class of agents. Similar to anthracyclines, pixantrone inhibits Topo-isomerase II but unlike anthracyclines -- rather than intercalation with DNA -- pixantrone alkylates DNA -- forming stable DNA adducts with particular specificity for CpG-rich, hyper-methylated sites. These structural differences resulted in significantly enhanced anti-lymphoma activity compared to doxorubicin in preclinical models. In addition, the structural motifs on anthracycline-like agents that are responsible for the generation of oxygen free radicals and the formation of toxic drug-metal complexes have also been modified in pixantrone in an effort to prevent the binding of iron and perpetuation of superoxide production -- both of which are the putative mechanism for anthracycline induced acute cardiotoxicity. These novel pharmacologic differences may allow re-introduction of anthracycline-like potency in the treatment of relapsed/refractory diffuse large lymphoma without unacceptable rates of cardiotoxicity.

About Cell Therapeutics, Inc.

Headquartered in Seattle, CTI is a biopharmaceutical company committed to developing an integrated portfolio of oncology products aimed at making cancer more treatable. For additional information, please visit www.CellTherapeutics.com.

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This press release includes forward-looking statements that involve a number of risks and uncertainties, the outcome of which could materially and/or adversely affect
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3. Pixantrone Significantly Increases Complete Remissions, Overall Response Rates, Frequency of Durable Remissions and Progression Free Survival in Patients with Relapsed and Refractory Aggressive Non-Hodgkins Lymphoma
4. Cell Therapeutics Second Quarter Net Loss Decreases 54%; Pixantrone NDA Submitted to the FDA for Approval
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7. New Pixantrone Data Presented at Meetings at American Society of Hematology Conference
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9. Cell Therapeutics Initiates Pixantrone PIX-R Pivotal Trial for Treatment of Patients With Relapsed/Refractory Diffuse Large B-cell Lymphoma
10. FDA Sets Meeting Date in Early June to Discuss Re-submission of Pixantrone NDA for Accelerated Approval
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