Seattle Genetics and Millennium to Highlight Brentuximab Vedotin (SGN-35) at the International Symposium on Hodgkin Lymphoma

Three Presentations Highlighting SGN-35 in CD30-Positive Hematologic Malignancies

COLOGNE, Germany--(BUSINESS WIRE)--Oct 25, 2010 - Seattle Genetics, Inc. (Nasdaq: SGEN) and Millennium: The Takeda Oncology Company, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited (TSE:4502), today announced that brentuximab vedotin (SGN-35) will be featured in three poster presentations at the 8th International Symposium on Hodgkin Lymphoma (ISHL) being held October 23-26, 2010 in Cologne, Germany.

The following posters will be presented on Tuesday, October 26, 2010:

 

  • Objective responses with SGN-35 retreatment in CD30-positive hematologic malignancies: a case series (Abstract #113)
  • Activity, safety and tolerability of antibody-drug conjugate (ADC) SGN-35 in relapsed/refractory Hodgkin lymphoma and CD30+ hematologic malignancies (Abstract #74)
  • Activity of SGN-35 in preclinical models of combination therapy and relapse prevention (Abstract #49)

“These presentations complement the recent positive results from our pivotal Hodgkin lymphoma and phase II systemic anaplastic large cell lymphoma (ALCL) trials, both in the relapsed or refractory setting, and describe the additional opportunities we are pursuing to meet the needs of patients with CD30-positive malignancies,” said Thomas C. Reynolds, M.D., Ph.D., Chief Medical Officer of Seattle Genetics. “In addition, we are preparing our brentuximab vedotin Biologics License Application (BLA) for submission to the U.S. Food and Drug Administration (FDA) in the first half of 2011.”

“The acceptance of these presentations at ISHL underscores the scientific community's continued interest in brentuximab vedotin,” said Nancy Simonian, M.D., Chief Medical Officer of Millennium. “We maintain our focus on meeting with regulators in Europe to discuss filing strategies in relapsed or refractory Hodgkin lymphoma and relapsed or refractory ALCL.”

About Brentuximab Vedotin

Brentuximab vedotin is an ADC comprising an anti-CD30 monoclonal antibody attached by an enzyme cleavable linker to a potent, synthetic drug payload, monomethyl auristatin E (MMAE) utilizing Seattle Genetics' proprietary technology. The ADC employs a novel linker system that is designed to be stable in the bloodstream but to release MMAE upon internalization into CD30-expressing tumor cells. This approach is intended to spare non-targeted cells and thus may help minimize the potential toxic effects of traditional chemotherapy while allowing for the selective targeting of CD30-expressing cancer cells, thus potentially enhancing the antitumor activity.

Seattle Genetics and Millennium recently reported top-line data from a pivotal trial of brentuximab vedotin for relapsed or refractory Hodgkin lymphoma and a phase II trial for relapsed or refractory ALCL. In the pivotal Hodgkin lymphoma trial, 75 percent of patients achieved an objective response as assessed by an independent central review. The median duration of response was greater than six months. In the phase II ALCL trial, 86 percent of patients achieved an objective response as assessed by an independent central review. The median duration of response has not yet been reached at a median follow up on study of approximately six months. The safety profile of brentuximab vedotin in these trials was generally consistent with prior clinical trial experience. More complete data sets from both trials will be presented in oral sessions at the American Society of Hematology (ASH) annual meeting, December 4-7, 2010, in Orlando, FL.

The companies are also conducting a phase III clinical trial (the AETHERA trial) for patients at high risk of residual Hodgkin lymphoma following autologous stem cell transplant, a phase II retreatment trial for relapsed patients who previously responded to brentuximab vedotin, and a phase I combination trial for the front-line treatment of Hodgkin lymphoma.

About the Seattle Genetics/Millennium Collaboration

Seattle Genetics and Millennium are jointly developing brentuximab vedotin. Under the terms of the collaboration agreement, Seattle Genetics has U.S. and Canadian commercialization rights and the Takeda Group has rights to commercialize brentuximab vedotin in the rest of the world. Seattle Genetics and the Takeda Group are funding joint development costs for brentuximab vedotin on a 50:50 basis, except in Japan where the Takeda Group will be solely responsible for development costs.

About Hodgkin Lymphoma

Lymphoma is a general term for a group of cancers that originate in the lymphatic system. There are two major categories of lymphoma: Hodgkin lymphoma and non-Hodgkin lymphoma. Hodgkin lymphoma is distinguished from other types of lymphoma by the presence of one characteristic type of cell, known as the Reed-Sternberg cell. A defining attribute of the Reed-Sternberg cell is its expression of the CD30 antigen.

According to the American Cancer Society, approximately 8,500 cases of Hodgkin lymphoma will be diagnosed in the United States during 2010 and more than 1,300 will die from the disease. Globally, there are more than 30,000 cases of Hodgkin lymphoma diagnosed each year. Although front-line combination chemotherapy can result in durable response rates, up to 30 percent of these patients relapse or are refractory to front-line treatment and have few therapeutic options beyond autologous stem cell transplant.

About Seattle Genetics

Seattle Genetics is a clinical-stage biotechnology company focused on the development and commercialization of monoclonal antibody-based therapies for the treatment of cancer and autoimmune disease. The company recently reported positive top-line data from both a pivotal Hodgkin lymphoma trial and phase II anaplastic large cell lymphoma trial with its lead product candidate, brentuximab vedotin, and plans to submit a BLA to the FDA in the first half of 2011. Brentuximab vedotin is being developed in collaboration with Millennium: The Takeda Oncology Company. In addition, Seattle Genetics has four other clinical-stage programs: SGN-75, ASG-5ME, dacetuzumab (SGN-40) and SGN-70. Seattle Genetics has collaborations for its ADC technology with a number of leading biotechnology and pharmaceutical companies, including Bayer, Celldex Therapeutics, Daiichi Sankyo, Genentech, GlaxoSmithKline, Millennium: The Takeda Oncology Company and Progenics, as well as ADC co-development agreements with Agensys, an affiliate of Astellas, and Genmab. More information can be found at www.seattlegenetics.com.

About Millennium

Millennium: The Takeda Oncology Company, a leading biopharmaceutical company based in Cambridge, Mass., markets a first-in-class proteasome inhibitor, and has a robust clinical development pipeline of product candidates. Millennium Pharmaceuticals, Inc. was acquired by Takeda Pharmaceutical Company Ltd. in May, 2008. The Company's research, development and commercialization activities are focused in oncology. Additional information about Millennium is available through its website, www.millennium.com.

For Seattle Genetics: Certain of the statements made in this press release are forward looking, such as those, among others, relating to the potential therapeutic benefit of brentuximab vedotin and plans for submission for regulatory approval to and obtaining regulatory approval from the FDA and the European Medicines Agency (EMA). Actual results or developments may differ materially from those projected or implied in these forward-looking statements. Factors that may cause such a difference include that the safety and/or efficacy results of the pivotal trial in relapsed or refractory Hodgkin lymphoma will not be sufficient to gain marketing approval in the United States or any other country, that we will be required to amend our submission for marketing approval or that such submission will be refused. In addition, our regulatory plans may change as a result of consultation with the FDA or EMA. More information about the risks and uncertainties faced by Seattle Genetics is contained in the company's 10-Q for the quarter ended June 30, 2010 filed with the Securities and Exchange Commission. Seattle Genetics disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

 

Contact: Seattle Genetics, Inc.
Peggy Pinkston, 425-527-4160
ppinkston@seagen.com
or
Millennium
Lauren Musto, 617-551-7848
lauren.musto@mpi.com

 

Posted: October 2010

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