FDA Accepts for Review Questcor's Filing of Its Supplemental New Drug Application for H.P. Acthar(R) Gel for Treatment of Infantile Spasms


UNION CITY, Calif., Dec. 24, 2009 (GLOBE NEWSWIRE) -- Questcor Pharmaceuticals, Inc. (Nasdaq:QCOR) today announced the U.S. Food & Drug Administration (FDA) now considers that Questcor has provided a complete response to all prior action letters for its supplemental New Drug Application (sNDA) to market H.P. Acthar(R) Gel (repository corticotrophin injection) for the treatment of infantile spasms. The FDA has set the user fee goal date (PDUFA) of June 11, 2010 for this sNDA.

"The medical community and Questcor continue to believe that Acthar has an important role in the treatment of infantile spasms and we look forward to working with the FDA to answer any questions as they consider our application," said Don M. Bailey, President and CEO of Questcor. "We continue to expect the FDA will convene an Advisory Panel meeting to obtain independent expert advice on specific aspects of the sNDA," added Mr. Bailey.

Acthar is currently approved in the U.S. for the treatment of MS exacerbations, nephrotic syndrome and many other conditions. Acthar is not approved in the U.S. for the treatment of IS, a potentially life-threatening disorder that typically begins in the first year of life. However, pursuant to guidelines published by the American Academy of Neurology and the Child Neurology Society, many child neurologists use Acthar to treat infants afflicted with this condition. Previously, the FDA granted Orphan Designation to Acthar for the treatment of IS.

About Questcor

Questcor Pharmaceuticals, Inc. is a pharmaceutical company that markets H.P. Acthar(R) Gel (repository corticotropin injection). H.P. Acthar Gel ("Acthar") is an injectable drug that is approved for the treatment of certain disorders with an inflammatory component, including the treatment of exacerbations associated with multiple sclerosis ("MS") and to induce a diuresis or a remission of proteinuria in the nephrotic syndrome without uremia of the idiopathic type or that is due to lupus erythamatosus. In addition, Acthar is not indicated for, but is used in treating patients with infantile spasms ("IS"), a rare form of refractory childhood epilepsy, and opsoclonus myoclonus syndrome, a rare autoimmune-related childhood neurological disorder. The Company also markets Doral(R) (quazepam), which is indicated for the treatment of insomnia characterized by difficulty in falling asleep, frequent nocturnal awakenings, and/or early morning awakenings. For more information, please visit www.questcor.com.

Note: Except for the historical information contained herein, this press release contains forward-looking statements that have been made pursuant to the Private Securities Litigation Reform Act of 1995. These statements relate to future events or our future financial performance. In some cases, you can identify forward-looking statements by terminology such as "may," "will," "if," "should," "forecasts," "expects," "plans," "anticipates," "believes," "estimates," "predicts," "potential," or "continue" or the negative of such terms and other comparable terminology. These statements are only predictions. Actual events or results may differ materially. Factors that could cause or contribute to such differences include, but are not limited to, the following:


 -- Questcor's ability to continue to successfully implement its
    Acthar-centric business strategy, including its expansion in
    the MS marketplace;
 -- Questcor's ability to manage its sales force expansion;
 -- FDA approval of and the market introduction of competitive
    products and our inability to market Acthar in IS prior to
    approval of IS as a labeled indication;
 -- Questcor's ability to operate within an industry that is
    highly regulated at both the Federal and state level;
 -- Regulatory changes or actions including Federal or State
    health care reform initiatives;
 -- Questcor's ability to accurately forecast the demand for its
    products;
 -- The gross margin achieved from the sale of its products;
 -- Questcor's ability to estimate the quantity of Acthar used by
    government entities and Medicaid-eligible patients;
 -- That the actual amount of rebates and chargebacks related to
    the use of Acthar by government entities, including the
    Department of Defense Tricare network, and Medicaid-eligible
    patients may differ materially from Questcor's estimates;
 -- Questcor's expenses and other cash needs for upcoming periods;
 -- The inventories carried by Questcor's distributors, specialty
    pharmacies and hospitals;
 -- Volatility in Questcor's monthly and quarterly Acthar
    shipments and end-user demand;
 -- Questcor's ability to obtain finished goods from its sole
    source contract manufacturers on a timely basis if at all;
 -- Questcor's ability to attract and retain key management
    personnel;
 -- Questcor's ability to utilize its NOLs to reduce income taxes
    on taxable income;
 -- Research and development risks, including risks associated
    with Questcor's sNDA for IS and its preliminary work in the
    area of nephrotic syndrome;
 -- Uncertainties regarding Questcor's intellectual property;
 -- The uncertainty of receiving required regulatory approvals in
    a timely way, or at all;
 -- Uncertainties in the credit and capital markets and the impact
    a further deterioration of these markets could have on
    Questcor's investment portfolio;
 -- As well as the risks discussed in Questcor's annual report on
    Form 10-K for the year ended December 31, 2008 and other
    documents filed with the Securities and Exchange Commission.

The risk factors and other information contained in these documents should be considered in evaluating Questcor's prospects and future financial performance.

Questcor undertakes no obligation to publicly release the result of any revisions to these forward-looking statements, which may be made to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events.

For more information, please visit www.questcor.com or www.acthar.com.



            

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