Baxter Submits European Marketing Authorization Application For HyQ, an Investigational IG Therapy for Primary Immunodeficiencies

VIENNA--(BUSINESS WIRE)--Sep 30, 2011 - Baxter International Inc. announced today that it has submitted an application to the European Medicines Agency's Committee for Human Medicinal Products seeking marketing authorization for HyQ. HyQ is Baxter's investigational immunoglobulin (IG) therapy administered subcutaneously and facilitated by recombinant human hyaluronidase, a dispersion and permeation enhancer, for use in patients with primary immunodeficiencies (PI).

"We understand the challenges faced by patients with PI and know they are in need of new options that can reduce the burden of treating the disease,” said Professor Hartmut Ehrlich, vice president, research and development, Baxter's BioScience business. “The trial we conducted found that the combination of our IG with this dispersion enhancing enzyme will facilitate subcutaneous administration and, if approved, may become an important new therapeutic option for this patient community."

The submission, which follows a similar application submitted to the United States Food and Drug Administration (FDA) earlier this year, is based on results from a phase III, prospective, open-label, non-controlled design clinical trial, which evaluated the safety and effectiveness of HyQ in the prevention of acute serious bacterial infections, and the pharmacokinetic parameters of HyQ compared to IG administered intravenously.

The objective of the study was to infuse HyQ at a 3 or 4 week IG dose in a single site. The acute serious bacterial infection rate in the study was 0.025 per patient per year, which is below the required efficacy threshold of 1.0. In the tolerability assessment of HyQ, the most frequently reported adverse reactions were infusion site reactions (20% of infusions), headache (3% of infusions), fatigue (1% of infusions) and pyrexia (fever) (1% of infusions). Baxter will be presenting study results during the American College of Allergy, Asthma and Immunology (ACAAI) annual meeting in Boston in November.

“Along with our development progress in markets around the world, the submission of our European MAA for HyQ is another important milestone in our efforts to deliver valuable new options that will benefit physicians and their patients,” said Ludwig Hantson, president, Baxter's BioScience business. “These efforts reinforce our ongoing commitment to innovation in delivering new therapy options for patients with these difficult to manage conditions.”

About HyQ

HyQ is an IG therapy facilitated subcutaneously by recombinant human hyaluronidase, a dispersion and permeation enhancer. The IG is a 10% solution that is prepared from large pools of human plasma to assure a broad spectrum of antibodies. The recombinant hyaluronidase, injected before the IG, facilitates the dispersion and absorption of the IG product to improve bioavailability and increase the amount of infused immune globulin reaching the systemic circulation compared to when IG is administered subcutaneously alone.

HyQ is being developed by Baxter using a recombinant human hyaluronidase technology platform licensed from Halozyme Therapeutics, Inc.

About Primary Immunodeficiency

Primary immunodeficiency (PI) comprises more than 150 congenital diseases of the immune system. In Europe, PI affects approximately one in 500 persons, and experts estimate that another one in 500 are yet undiagnosed. For the EU, this is equivalent to 1.5 million affected individuals, 50 percent of whom are undiagnosed.

About Baxter

Baxter International Inc. (NYSE: BAX), through its subsidiaries, develops, manufactures and markets products that save and sustain the lives of people with hemophilia, immune disorders, infectious diseases, kidney disease, trauma, and other chronic and acute medical conditions. As a global, diversified healthcare company, Baxter applies a unique combination of expertise in medical devices, pharmaceuticals and biotechnology to create products that advance patient care worldwide.

Contact: Baxter International Inc.
Media Contact:
Deborah Spak, (847) 948-2349
or
Baxter Investor Contacts
Mary Kay Ladone, (847) 948-3371
Clare Trachtman, (847) 948-3085

Posted: September 2011

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