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European Medicines Agency's (EMA) Committee for Human Medicinal Products (CHMP)Tentatively Scheduled to Render an Opinion on PixuvriTM Marketing Authorization Application on January 19, 2012
Date:12/4/2011

SEATTLE, Dec. 5, 2011 /PRNewswire/ -- Cell Therapeutics, Inc. ("CTI") (NASDAQ and MTA: CTIC) announced today an update on the status and progress of its European marketing authorization application ("MAA") for Pixuvri. CTI is seeking a license to market Pixuvri in the E.U. for patients with relapsed or refractory aggressive non-Hodgkin's lymphoma ("NHL") who have failed two or more prior lines of therapy. CTI received the CHMP's day 180 list of outstanding issues, which unlike the day 120 letter, contained only one remaining major objection to CTI's MAA and items not deemed to be major issues. CTI plans on submitting its responses to the day 180 list of outstanding issues by December 19, 2011. If the responses satisfy the outstanding objection and the CHMP does not require an oral explanation a positive recommendation on the approval of Pixuvri could be made at the January 19th meeting of the CHMP.

"We believe we have made excellent progress working collegially with the E.U. rapporteurs on addressing items raised in the day 120 list of outstanding issues because we resolved all major objections other than the one major remaining objection in the day 180 letter," stated James A. Bianco,  M.D, CEO of CTI.

To address the remaining major objection, the CHMP required that CTI provide a literature review of mechanisms of rituximab resistance and analyses that demonstrate the efficacy of Pixuvri in patients with prior rituximab treatment, as well as information to address some additional questions that were not deemed to be major issues and could be addressed by additional analyses of currently available data.

On November 29th CTI met with the rapporteurs and team members from the EMA for a clarification meeting at which CTI and its clinical expert presented the results of its literature review, additional supportive analyses regarding the efficacy of pixantrone across response rates and progression free survival in patients with prior rituximab treatment as well as its other proposed responses to the list of outstanding issues. Based on feedback at the meeting,  CTI believes its day 181 response submission can resolve this last outstanding major clinical objection as well as the minor concerns.

The basis for the MAA submission was CTI's pivotal randomized trial, PIX301, which compared Pixuvri to other available single agent therapies in the treatment of patients with relapsed or refractory aggressive NHL who failed two or more prior lines of therapy—a patient population for which there are currently no approved effective therapies.

The MAA review process involves a series of interactions between the applicant and the CHMP review team. After 120 days following the acceptance of the MAA, the applicant receives a list of outstanding issues, including major objections to approval. Any remaining issues are provided to the applicant at day 180 in the review cycle. If major objections remain after the applicant provides responses to the day 180 list of outstanding issues, the CHMP may request an oral explanation to address those remaining major objections. If major objections are adequately addressed  in the applicant's day 180 response submission, then the CHMP can  determine the approvability of the MAA without requiring an oral explanation. CTI is required to submit its day 181 responses to the day 180 list of outstanding issues by December 19, 2011 unless CTI deems it requires more time and requests an extension. At present CTI believes it will have all the requisite information and analyses to address all of the outstanding issues.

About Pixuvri (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 actual future results and the market price of CTI's securities. Specifically, the risks and uncertainties that could affect the development of pixantrone include risks associated with preclinical and clinical developments in the biopharmaceutical industry in general, and with pixantrone in particular, including, without limitation, the potential failure of pixantrone to prove safe and effective for the treatment of relapsed or refractory NHL and/or other tumors as determined by the FDA and/or the EMA, that CTI may not receive a positive opinion regarding approvability of pixantrone from the CHMP on January 19, 2012 or at all, that CTI may receive an additional list of outstanding issues from the EMA, that CTI may not be able to demonstrate the efficacy of pixantrone in patients previously exposed to rituximab as requested by the EMA, that CTI may not be able to provide satisfactory answers to the other concerns included in the CHMP's day-180 list of outstanding issues, that CTI may not be able to submit its response to the CHMP's day-180 list of outstanding issues by December 19, 2011, that the CHMP may request additional information from CTI regarding pixantrone, that CTI may not be able to commence commercialization of pixantrone in the first half 2012, CTI's ability to continue to raise capital as needed to fund its operations, competitive factors, technological developments, costs of developing, producing and selling pixantrone, and the risk factors listed or described from time to time in CTI's filings with the Securities and Exchange Commission including, without limitation, CTI's most recent filings on Forms 10-K, 10-Q and 8-K. Except as may be required by law, CTI does not intend to update or alter its forward-looking statements whether as a result of new information, future events, or otherwise.

Media Contact:
Dan Eramian
T: 206.272.4343
C: 206.854.1200
E: deramian@ctiseattle.com
www.CellTherapeutics.com/press_room

Investors Contact:
Ed Bell
T: 206.282.7100
Lindsey Jesch Logan
T: 206.272.4347
F: 206.272.4434
E: invest@ctiseattle.com 
www.CellTherapeutics.com/investors

Medical Information Contact:
T: 800.715.0944
E: info@askarm.com

 

 

 

 

 

 


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SOURCE Cell Therapeutics, Inc.
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