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ContraVir Pharmaceuticals Announces TXL(TM) Has Been Granted Orphan Drug Designation for the Treatment of HBV in a Pediatric Population
EDISON, N.J., Feb. 22, 2018 (GLOBE NEWSWIRE) -- ContraVir Pharmaceuticals, Inc. (NASDAQ:CTRV), a biopharmaceutical company focused on the development and commercialization of targeted antiviral therapies, announced today that the U.S. Food and Drug Administration (FDA) has granted Orphan Drug Designation to its lead investigational drug candidate, tenofovir exalidex (TXL(TM)) for the treatment of chronic hepatitis B infection in a pediatric patient population (0 to 11 years old).
[color=red]Chronic hepatitis B virus (HBV) is a major public health burden affecting more than 350 million people worldwide, with high infection rates prevalent in children who are infected at birth or in early childhood. Current treatment options available for children [and adults] generally require lifelong treatment and have had limited success, creating a great need for improved therapies, ultimately leading to a functional cure. [/color]
"We are very pleased to report that TXL(TM) is currently the only investigational or approved HBV treatment granted orphan designation for the pediatric patient population," said James Sapirstein, Chief Executive Officer at ContraVir. "This designation underscores the significant unmet need in this highly vulnerable patient population and provides a critical development path for TXL(TM) to bring to market a new treatment option for this under-served patient population. As we previously reported the agreement with FDA on the 505(b)(2) registration pathway for TXL(TM), we have achieved yet another important regulatory milestone, and we look forward to continued collaboration with the FDA addressing the urgency of successfully developing treatments for hepatitis B in the pediatric and adult populations."
Orphan designation qualifies the sponsor of the drug for various development incentives, including tax credits for qualified clinical testing. Orphan drug designation qualifies TXL(TM) for seven years of market exclusivity in the U.S. upon approval, financial assistance in clinical research and development, and an accelerated evaluation of the registration package by the FDA Additionally, a marketing application for a prescription drug product that has received orphan designation is not subject to a prescription drug user fee for the rare disease or condition for which the drug is designated.
About TXL(TM)
Tenofovir exalidex (TXL(TM)) is a highly potent prodrug of the antiviral tenofovir. Tenofovir is the active component of both Vemlidy(R)(tenofovir alafenamide) and Viread(R) (tenofovir disoproxil fumarate).TXL(TM)'s novel liver-targeting prodrug structure results in decreased systemic circulating levels of tenofovir, thereby reducing the potential for renal and bone side effects. ContraVir has completed a Phase 2 trial of TXL(TM), in which HBV-infected subjects were administered doses up to 100 mg for 28 days and is now optimizing its formulation to further enhance drug delivery. To date, TXL(TM) has achieved clinical proof of concept for antiviral activity and displayed an excellent safety, tolerability, and pharmacokinetic profile. Based on the agent's best-in-class potential, ContraVir believes TXL(TM) can become the cornerstone of a curative combination therapy for hepatitis B.
About ContraVir Pharmaceuticals
ContraVir is a biopharmaceutical company focused on the development and commercialization of targeted antiviral therapies with a specific focus on developing a potentially curative therapy for hepatitis B virus (HBV). The company is developing two novel anti-HBV compounds with complementary mechanisms of action. TXL(TM), designed to deliver high intrahepatic concentrations of TFV while minimizing off-target effects caused by high levels of circulating TFV (bone and kidney), recently completed a Phase 2a trial. CRV431, the other anti-HBV compound, is a next-generation cyclophilin inhibitor with a unique structure that increases its potency and selective index against HBV. In vitro and in vivo studies have thus far demonstrated that CRV431 reduces HBV DNA and other viral proteins, including surface antigen (HBsAg). For more information visit www.contravir.com
Forward Looking Statements
Certain statements in this press release are forward-looking within the meaning of the Private Securities Litigation Reform Act of 1995. These statements may be identified by the use of forward-looking words such as "anticipate," "believe," "forecast," "estimated" and "intend," among others. These forward-looking statements are based on ContraVir's current expectations and actual results could differ materially. There are a number of factors that could cause actual events to differ materially from those indicated by such forward-looking statements. These factors include, but are not limited to, substantial competition; our ability to continue as a going concern; our need for additional financing; uncertainties of patent protection and litigation; uncertainties with respect to lengthy and expensive clinical trials, that results of earlier studies and trials may not be predictive of future trial results; uncertainties of government or third party payer reimbursement; limited sales and marketing efforts and dependence upon third parties; and risks related to failure to obtain FDA clearances or approvals and noncompliance with FDA regulations. As with any drug candidates under development, there are significant risks in the development, regulatory approval, and commercialization of new products. There are no guarantees that future clinical trials discussed in this press release will be completed or successful, or that any product will receive regulatory approval for any indication or prove to be commercially successful. ContraVir does not undertake an obligation to update or revise any forward-looking statement. Investors should read the risk factors set forth in ContraVir's Form 10-K for the year ended June 30, 2017 and other periodic reports filed with the Securities and Exchange Commission.
For further information, please contact:
Sharen Pyatetskaya
Director of Investor Relations
sp@contravir.com; (732) 902-4028
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February 22, 2018 08:00 ET (13:00 GMT)
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