Opexa Announces Issuance of 50th Patent for T-cell Immunotherapy Platform Business Wire THE WOODLANDS, Texas -- August 27, 2013 Opexa Therapeutics, Inc. (NASDAQ: OPXA), a biotechnology company developing Tcelna^®, a novel T-cell immunotherapy for the treatment of multiple sclerosis (MS), today announced that several key patents have issued, further strengthening the Company's proprietary technology for the development of patient-specific immunotherapies. Opexa licenses and maintains a variety of patents covering the treatment of autoimmune diseases, including MS. In the past year alone, Opexa has received eight patents or notices of allowance for related inventions, including a key patent recently issued by the European patent office. The European patentis the fiftieth (50^th) patent awarded worldwide under Opexa's direction for its proprietary T-cell platform and validates Opexa as a leader in the field of Precision Immunotherapy^TM. Opexa has a broad patent portfolio protecting its technology in the United States, Europe and Asia. European patent no. 2335720 was recently granted and is valid in 18 European countries. The European patent covers the manufacture of patient-specific T-cell vaccines created using immunogenic fragments of myelin proteins. It further protects the use of Tcelna as a treatment for MS. Tcelna, Opexa's leading pharmaceutical candidate, is a personalized T-cell immunotherapy currently in a Phase IIb clinical development program for the treatment of Secondary Progressive MS (SPMS). Tcelna has been granted Fast Track Designation from the United States Food and Drug Administration (FDA) for the treatment of SPMS. Additional patents that have recently been granted include European patent no. 1677821,which is directed toward a T-cell vaccine enriched in CD8^+ T-cells for treating MS, and Israeli patent no. 195115, granted for personalized T-cell vaccines comprising T-cells specific to the most immunogenic epitopes of any autoantigen. A notice of allowance was received last month with respect to U.S. patent application no. 12/306,894, directed toward the use of a personalized T-cell vaccine for the treatment of rheumatoid arthritis. "As a leader in the novel field of Precision Immunotherapy, it is vital that we build and protect our intellectual property position globally. This serves to maintain our competitive advantage and also enables us to build incremental shareholder value," stated Neil K. Warma, President and CEO of Opexa. "It is critical that we not only maintain and defend the strong patent estate we have built for Tcelna in MS, but we believe it is also important to our long-term growth to seek patent coverage for the potential use of our proprietary technology to treat other autoimmune diseases.” About Opexa Opexa’s mission is to lead the field of Precision Immunotherapy™ by aligning the interests of patients, employees and shareholders. The Company’s leading therapy candidate, Tcelna^®, is a personalized T-cell immunotherapy that is in a Phase IIb clinical development program (the Abili-T trial) for the treatment of Secondary Progressive MS. Tcelna is derived from T-cells isolated from the patient’s peripheral blood, expanded ex vivo, and reintroduced into the patients via subcutaneous injections. This process triggers a potent immune response against specific subsets of autoreactive T-cells known to attack myelin. About Multiple Sclerosis (MS) MS is a chronic, inflammatory condition of the central nervous system and is the most common, non-traumatic, disabling neurological disease in young adults. It is estimated that approximately two million people have MS worldwide. While symptoms can vary, the most common symptoms of MS include blurred vision, numbness or tingling in the limbs and problems with strength and coordination. The relapsing forms of MS are the most common. The Secondary Progressive form of MS represents about a third of the MS patient population. About Tcelna Tcelna^® is a potential personalized therapy that is under development to be specifically tailored to each patient's disease profile. Tcelna is manufactured using ImmPath™, Opexa's proprietary method for the production of a patient-specific T-cell immunotherapy, which encompasses the collection of blood from the MS patient, isolation of peripheral blood mononuclear cells, generation of an autologous pool of myelin-reactive T-cells (MRTCs) raised against selected peptides from myelin basic protein (MBP), myelin oligodendrocyte glycoprotein (MOG) and proteolipid protein (PLP), and the return of these expanded, irradiated T-cells back to the patient. These attenuated T-cells are reintroduced into the patient via subcutaneous injection to trigger a therapeutic immune system response. Opexa is currently conducting a Phase IIb study of Tcelna. Named “Abili-T,” the trial is a randomized, double-blind, placebo-controlled clinical study in patients who demonstrate evidence of disease progression with or without associated relapses. The trial is expected to enroll 180 patients at approximately 30 leading clinical sites in the U.S. and Canada with each patient receiving two annual courses of Tcelna treatment consisting of five subcutaneous injections per year. The trial’s primary efficacy outcome is the percentage of brain volume change (atrophy) at 24 months. Study investigators will also measure several important secondary outcomes commonly associated with MS, including disease progression as measured by the Expanded Disability Status Scale (EDSS), annualized relapse rate and changes in disability as measured by EDSS and the MS Functional Composite. For more information visit the Opexa Therapeutics website at www.opexatherapeutics.com. Cautionary Statement Relating to Forward-Looking Information for the Purpose of "Safe Harbor" Provisions of the Private Securities Litigation Reform Act of 1995 This press release contains forward-looking statements which are made pursuant to the safe harbor provisions of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Statements contained in this release, other than statements of historical fact, constitute "forward-looking statements." The words "expects," "believes," "anticipates," "estimates," "may," "could," "intends," and similar expressions are intended to identify forward-looking statements. The forward-looking statements in this release do not constitute guarantees of future performance. Investors are cautioned that statements in this report which are not strictly historical statements, including, without limitation, statements regarding the Company’s intellectual property portfolio, the Company’s T-cell platform and the development of the Company's product candidate, Tcelna (imilecleucel-T), constitute forward-looking statements. Such forward-looking statements are subject to a number of risks and uncertainties that could cause actual results to differ materially from those anticipated. These risks and uncertainties include, but are not limited to, risks associated with: market conditions; our capital position; the rights and preferences provided to the Series A convertible preferred stock and investors in the convertible secured notes we issued in July 2012 (including a secured interest in all of our assets); our ability to compete with larger, better financed pharmaceutical and biotechnology companies; new approaches to the treatment of our targeted diseases; our expectation of incurring continued losses; our uncertainty of developing a marketable product; our ability to raise additional capital to continue our development programs (including to undertake and complete any ongoing or further clinical studies for Tcelna), including in this regard our ability to satisfy various conditions required to access the financing potentially available under the purchase agreements with Lincoln Park Capital Fund, LLC (“Lincoln Park”) (such as the minimum closing price for our common stock and the requirement for an ongoing trading market for our stock); our ability to raise additional capital through the sale of shares of our common stock under the purchase agreements with Lincoln Park or under our at-the-market (ATM) facility; our ability to maintain compliance with NASDAQ listing standards; the success of our clinical trials (including the Phase IIb trial for Tcelna in secondary progressive MS which, depending upon results, may determine whether Ares Trading SA (“Merck”) elects to exercise its option for an exclusive license to Tcelna for the treatment of MS (the “Option”)); whether Merck exercises its Option and, if so, whether we receive any development or commercialization milestone payments or royalties from Merck pursuant to the Option; our dependence (if Merck exercises its Option) on the resources and abilities of Merck for the further development of Tcelna; the efficacy of Tcelna for any particular indication, such as for relapsing remitting MS or secondary progressive MS; our ability to develop and commercialize products; our ability to obtain required regulatory approvals; our compliance with all Food and Drug Administration regulations; our ability to obtain, maintain and protect intellectual property rights (including for Tcelna); the risk of litigation regarding our intellectual property rights or the rights of third parties; the success of third party development and commercialization efforts with respect to products covered by intellectual property rights that we may license or transfer; our limited manufacturing capabilities; our dependence on third-party manufacturers; our ability to hire and retain skilled personnel; our volatile stock price; and other risks detailed in our filings with the SEC. These forward-looking statements speak only as of the date made. We assume no obligation or undertaking to update any forward-looking statements to reflect any changes in expectations with regard thereto or any change in events, conditions or circumstances on which any such statement is based. You should, however, review additional disclosures we make in our Annual Reports on Form 10 K, Quarterly Reports on Form 10-Q, and Current Reports on Form 8-K filed with the SEC. Contact: Opexa Therapeutics, Inc. Company Contact: Karthik Radhakrishnan Chief Financial Officer 281-775-0600 or Investor Relations: The Trout Group Adam Cutler 646-378-2936 email@example.com
Opexa Announces Issuance of 50th Patent for T-cell Immunotherapy Platform
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