updated 5/10/2011 9:15:57 AM ET 2011-05-10T13:15:57

  • Conducted by the prestigious German High-Grade NHL Study Group
  • R-CHMP (M=Marqibo) versus R-CHOP (O=standard vincristine)
  • Enrollment anticipated in third quarter 2011

SAN MATEO, Calif., May 10, 2011 (GLOBE NEWSWIRE) -- Talon Therapeutics, Inc. (OTCBB:TLON) today announced the initiation of a Phase 3 Study of Marqibo (vincristine sulfate liposomes injection) in elderly patients with newly diagnosed aggressive Non-Hodgkin's Lymphoma to be conducted by the German High-Grade Non-Hodgkin's Lymphoma Study Group (DSHNHL).

"The German High-Grade Non-Hodgkin's Lymphoma Study Group is one of the most well-regarded hematologic malignancy-focused cooperative groups in the world and we are very pleased to be supporting them in this important study," stated Steven R. Deitcher M.D., President, Chief Executive Officer and Director of Talon Therapeutics. "We agree with DSHNHL that Marqibo facilitated vincristine dose intensification while maintaining a predictable and manageable safety profile in NHL has the potential to benefit patients."

This Phase 3, randomized study, expected to begin patient treatment in the third quarter of 2011, builds upon Phase 2 data from a study of Marqibo in NHL that is currently under review at a major oncology journal. The title of the DSHNHL study is "Improvement of outcome and reduction in toxicity in elderly patients with CD20+ aggressive B-cell lymphoma by an optimized schedule of the monoclonal antibody rituximab, substitution of conventional by liposomal vincristine and FDG-PET based reduction of therapy".

The study will enroll approximately 1,000 patients (61-80 years of age) with aggressive CD20+ B-cell NHL. The primary objectives are to test the effects of substituting conventional vincristine with Marqibo in the R-CHOP regimen and to test the effects of an optimized application of rituximab. The Principal Investigator for this study is the internationally recognized Professor Dr. Michael Pfreundschuh.

Talon and DSHNHL completed protocol development and an investigator meeting, and anticipate first-patient-in during the third quarter of 2011. Talon will fund a portion of this Phase 3 study in NHL as part of its Marqibo development program.

About Marqibo

Marqibo is a novel, targeted Optisome™ encapsulated formulation product candidate of the FDA-approved anticancer drug vincristine. Up until now, Talon has been primarily developing Marqibo for the treatment of adult, Philadelphia chromosome negative (Ph-) acute lymphoblastic leukemia (ALL). Vincristine, a microtubule inhibitor, is FDA-approved for ALL and is widely used as a single agent and in combination regimens for treatment for hematologic malignancies such as lymphomas and leukemias. Talon's encapsulation formulation is designed to provide prolonged circulation of the drug in the blood and accumulation at the tumor site. These characteristics are intended to increase the dose of vincristine delivered in a safe and effective manner. 

Talon plans to submit to the FDA a New Drug Application, or NDA, seeking accelerated approval of Marqibo in adult Ph- ALL, in second or greater relapse or that has progressed following two or more prior lines of anti-leukemia therapy, by the end of June 2011.  Talon has received orphan drug and fast track designations for Marqibo for the treatment of adult ALL from the U.S. Food and Drug Administration. Marqibo has also received orphan drug designation in adult leukemia from the European Medicines Evaluation Agency.

About Talon Therapeutics

Talon Therapeutics, Inc. is a biopharmaceutical company dedicated to seizing upon medical opportunities, efficiently and expertly leading product candidates through clinical development, and transferring value to patients, patient care providers, shareholders, corporate partners, and employees.

In addition to Marqibo, the Company has additional pipeline opportunities some of which, like Marqibo, have the potential to improve delivery and enhance the therapeutic benefits of well characterized, proven chemotherapies and enable high potency dosing without increased toxicity.

Additional information on Talon Therapeutics can be found at www.talontx.com .

The Talon Therapeutics, Inc. logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=3290

Forward-Looking Statement

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These statements are often, but not always, made through the use of words or phrases such as "anticipates," "expects," "plans," "believes," "intends," and similar words or phrases. These forward-looking statements include without limitation, statements regarding the timing of the initiation of the planned Phase 3 study of Marqibo, the timing of planned regulatory filings relating to Marqibo, Talon's ability to obtain accelerated approval of Marqibo for the treatment of adult Ph- ALL, and the potential of Marqibo to replace existing therapies. Such statements involve risks and uncertainties that could cause Talon's actual results to differ materially from the anticipated results and expectations expressed in these forward-looking statements. These statements are based on current expectations, forecasts and assumptions that are subject to risks and uncertainties, which could cause actual outcomes and results to differ materially from these statements. Among other things, the timing of Talon's proposed submission of an NDA seeking accelerated approval of Marqibo is subject to the FDA's acceptance of its plans for a Phase 3 confirmatory trial of Marqibo, there can be no assurances that any of Talon's clinical and regulatory development efforts relating to Marqibo will be successful; that even if an NDA for Marqibo is accepted by the FDA, that it will be approved; that the data of the clinical trials of Marqibo will be sufficient to support approval by the FDA of an NDA for Marqibo; that the results of the clinical trials of Marqibo will support Talon's claims or beliefs concerning Marqibo's safety and effectiveness; and that Talon will be able to secure the additional capital necessary to fund its product development programs, including Marqibo, to completion, Talon's reliance on third-party researchers to develop its product candidates, and its lack of experience in developing and commercializing pharmaceutical products. Additional risks are described in the company's Annual Report on Form 10-K for the year ended December 31, 2010. Talon assumes no obligation to update these statements, except as required by law.

CONTACT: Investor & Media Contacts:
         Investor Relations Team
         (650) 588-6641
         investor.relations@talontx.com

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