Raptor Pharmaceutical Corp. Submits New Drug Application for RP103 for the Potential Treatment of Nephropathic Cystinosis

NOVATO, CA, USA I March 30, 2012 I Raptor Pharmaceutical Corp. ("Raptor" or the "Company") (Nasdaq:RPTP - News) announced that it submitted a New Drug Application ("NDA") to the U.S. Food and Drug Administration ("FDA") seeking approval to market its investigational drug candidate, Cysteamine Bitartrate Delayed-release Capsules (RP103), for the potential treatment of nephropathic cystinosis. In its application, Raptor has requested Priority Review of the NDA, which, if granted, could lead to a decision for marketing approval from the FDA of RP103 for the potential treatment of nephropathic cystinosis in the fourth calendar quarter of 2012. Earlier this week, on March 26, Raptor announced European Medicines Agency ("EMA") validation of its Marketing Authorization Application ("MAA") for RP103 for the potential treatment of nephropathic cystinosis.

"A Company's first NDA submission is a significant milestone and we are proud of everyone who helped us to achieve this goal," said Christopher M. Starr, Ph.D., Raptor's Chief Executive Officer. "We could not be more pleased to have now submitted both our NDA, as well as our MAA to the EMA, of RP103 for the potential treatment of cystinosis, by taking advantage of the newly recommended electronic Common Technical Document ("eCTD") format."

The NDA submission for marketing approval includes previously announced data from Raptor's Phase 3 clinical trial of RP103. As reported, RP103 met the clinical trial's sole primary endpoint and there were no unexpected serious safety concerns attributable to RP103 experienced by patients in the trial. The trial was conducted at three clinical sites in the U.S. and five clinical sites in Europe.

Patrice P. Rioux, M.D., Ph.D., Raptor's Chief Medical Officer, said, "We believe the positive clinical data generated by our Phase 3 clinical trial demonstrates that RP103 is safe and effective in cystinosis patients. We look forward to working closely with FDA in their review of our application."

About Nephropathic Cystinosis

Nephropathic cystinosis, an orphan disease, is estimated to effect a population of 2,000 patients worldwide, including 500 patients in the U.S. and 800 patients in Europe. Cystinosis patients have inherited a defective cystine transporter gene which results in body-wide cellular toxicity resulting from the abnormal buildup of the amino acid cystine in the lysosomes. Cystinosis is usually diagnosed in the first year of life and requires lifelong therapy. Cystine crystals accumulate in various tissues and organs, including the kidneys, brain, liver, thyroid, pancreas, muscles and eyes. Left untreated, the disease is fatal by the first decade of life. RP103 reduces cellular toxicity by continuously removing cystine from the lysosome.

About Cysteamine and RP103

RP103 is Raptor's proprietary delayed and extended release oral medication designed to treat the underlying metabolic cause of cystinosis. RP103 is an enteric coated, microbead formulation of cysteamine bitartrate that has been formulated to be sprinkled onto food for administration to patients too young to take oral capsules. Raptor has been granted orphan product designation for RP103 by the EMA and FDA.

In December 2007, Raptor obtained an exclusive, worldwide license from the University of California, San Diego for the development of RP103 for nephropathic cystinosis and for cysteamine for other potential indications including Huntington's Disease currently in a Phase 2/3 clinical trial in France and non-alcoholic steatohepatitis ("NASH") currently in a Phase 2b clinical trial in the U.S.

About Raptor Pharmaceutical Corp.

Raptor Pharmaceutical Corp. (Nasdaq:RPTP - News) ("Raptor") seeks to research, produce, and deliver medicines that improve life for patients with severe, rare disorders. Raptor currently has product candidates in clinical development designed to potentially treat nephropathic cystinosis, Non-alcoholic Steatohepatitis ("NASH"), Huntington's Disease ("HD"), aldehyde dehydrogenase deficiency ("ALDH2"), and thrombotic disorder.

Raptor's preclinical programs are based upon bioengineered novel drug candidates and drug-targeting platforms derived from the human receptor-associated protein and related proteins that are designed to target cancer and infectious diseases.

SOURCE: Raptor Pharmaceutical Corp

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