( BRANFORD Conn.--(BUSINESS WIRE)--Jun 2...)Neurogen Announces Positive Results for Proprietary Insomnia Drug,in Two Chronic Insomnia Clinical Trials,Health

BRANFORD, Conn.--(BUSINESS WIRE)--Jun 25, 2007 - Neurogen Corporation (Nasdaq: NRGN) today announced positive top-line results from two dose-ranging, Phase 2b clinical trials in chronic insomnia patients with the Company's proprietary insomnia agent, NG2-73, an alpha-3 preferring GABA(A) partial agonist. Multiple formulations were studied in each trial to determine the best profile for rapidity of sleep onset and maintenance of sleep through the night without residual sedation the next day.

The objective of the first trial--Study 202--was to measure efficacy in sleep maintenance, or the ability to maintain sleep throughout the night after falling asleep. In this study, NG2-73 achieved statistically significant results versus placebo (overall p less than 0.001) at all doses tested in the primary endpoint of sleep maintenance (measured by Wake After Sleep Onset - or WASO). Study 202 was the first study in which NG2-73 has been studied for sleep maintenance in chronic insomnia patients and confirms efficacy in this group. It included eight different controlled release doses of the compound.

The objective of the second trial - Study 203 - was to demonstrate efficacy in sleep onset, or the amount of time it takes to fall asleep, in chronic insomnia patients. In this study, NG2-73 achieved statistically significant results versus placebo (overall p less than 0.0001) at all doses tested in the primary endpoint of sleep onset (measured by Latency to Persistent Sleep - or LPS on the first two nights of treatment). Study 203 included two immediate release forms and three controlled release doses of NG2-73.

William H. Koster, PhD, President and CEO of Neurogen, said, "We are very pleased with the results of these studies. We wanted to answer two questions in these trials. First, can we achieve our target profile in chronic insomnia patients of rapid onset of sleep which is maintained throughout the night wit
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