Hyperion Therapeutics Completes Phase 2 Data Analysis and Schedules End of Phase 2 Meeting With FDA for HPN-100 in the Chronic Treatment of Urea Cycle... (Left untreated urea cycle disorders canc...)

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Hyperion Therapeutics Completes Phase 2 Data Analysis and Schedules End of Phase 2 Meeting With FDA for HPN-100 in the Chronic Treatment of Urea Cycle Disorders

Date:11/12/2008

Left untreated, urea cycle disorders can cause dangerously heightened levels of ammonia in the bloodstream (hyperammonemia) resulting in brain damage, coma, and/or death.

About HPN-100

HPN-100 is a pro-drug of phenylbutyrate and a pre-pro-drug of phenylacetic acid, the active moiety of BUPHENYL(R), the only therapy currently FDA-approved as adjunctive therapy for the chronic management of patients with the most prevalent urea cycle deficiencies including those related to carbamylphosphate synthetase, ornithine transcarbamylase and argininosuccinic acid synthetase. HPN-100, which is dosed orally in liquid form, provides an alternative pathway to the urea cycle for the disposal of waste nitrogen through the renal excretion of phenylacetylglutamine, which is formed from phenylacetic acid and glutamine.

About BUPHENYL(R)

BUPHENYL(R) is indicated as adjunctive therapy in the chronic management of patients with urea cycle disorders involving deficiencies of carbamylphosphate synthetase (CPS), ornithine transcarbamylase (OTC), or argininosuccinic acid synthetase (AS). BUPHENYL(R) should not be administered to patients with known hypersensitivity to sodium phenylbutyrate or any component of this preparation. The most common adverse reactions associated with BUPHENYL(R) were amenorrhea dysfunction, decreased appetite, body odor (probably caused by its metabolite phenylacetate) and bad taste or taste aversion. Patients with urea cycle disorders should not take valproic acid, haloperidol, or steroids as these drugs have been reported to increase blood ammonia levels, and probenecid may affect the kidneys' excretion. Use with great care, if at all, in patients with congestive heart failure or severe renal insufficiency, and in clinical states where there is sodium retention with edema. Use caution when administering to patients with hepatic or renal insufficiency or inborn errors of beta oxidation. The safety or efficacy of doses in excess of 20 gra
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Hyperion Therapeutics Completes Phase 2 Data Analysis and Schedules End of Phase 2 Meeting With FDA for HPN-100 in the Chronic Treatment of Urea Cycle...(Left untreated urea cycle disorders canc...),Health