Data Presented at American Headache Society's Annual Scientific Meeting Show Primary Endpoint Met as Well as Improvement on Important Secondary Endpoints in Phase IIb Acute Migraine Trial of TorreyPines Therapeutics' ...(t)somnolence (7.7 percent vs. 6.7 percen...),Health

Tezampanel is the first AMPA/kainate-type glutamate receptor antagonist to be studied in clinical trials for chronic pain, including migraine. Glutamate receptors mediate the functioning of glutamate, an important excitatory neurotransmitter. While normal glutamate production is essential, excess glutamate production, either through injury or disease, can have a range of pathological effects. By acting at both the AMPA and kainate receptor site to competitively block the binding of glutamate, tezampanel and its oral prodrug, NGX426, have the potential to treat a number of diseases and disorders. These include migraine and other forms of chronic pain such as neuropathic pain and fibromyalgia, as well as muscle spasticity and rigidity, thrombosis and epilepsy.

Migraine is a debilitating neurological condition characterized by an intense and disabling episodic headache. According to the National Headache Foundation, nearly 30 million people in the United States suffer from migraines. More than 50 percent of migraine sufferers endure from one to four migraine attacks per month. In addition to headache pain, migraine attacks are frequently accompanied by photophobia, phonophobia, nausea and vomiting.

About TorreyPines Therapeutics

TorreyPines Therapeutics, Inc. is a biopharmaceutical company committed to providing patients with better alternatives to existing therapies through the research, development and commercialization of small molecule compounds. The company's goal is to develop versatile product candidates each capable of treating a number of acute and chronic diseases and disorders such as migraine, chronic pain, muscle spasticity and rigidity, xerostomia and cognitive disorders. The company is cu
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