The major obstacle to HCV vaccine development has been the extensive genetic variation between different strains and genotypes, and even the significant antigenic variation among virus within individual patients. In addition, the absence of a clearly defined protective immune response after natural infection has historically complicated the prospects of developing a vaccine against HCV infection.However, unlike traditional vaccines constrained by the paradigm of matching a preventive or therapeutic vaccine to a single pathogen strain or strains, Inovio's SynCon vaccines are based on genetic code for a specific antigen from multiple strains of the target pathogen. Thus, while the SynCon antigens may not be perfectly (100%) matched to the pathogenic strains, they are designed to protect against multiple existing strains as well as changing strains of a virus. Extensive preclinical data has validated their ability to protect against many strains of a disease; initial human data for our influenza vaccine has also provided evidence of this capability. About Inovio Pharmaceuticals, Inc. Inovio is revolutionizing vaccines to prevent and treat today's cancers and challenging infectious diseases. Its SynCon vaccines are designed to provide universal cross-strain protection against known as well as newly emergent unmatched strains of pathogens such as influenza. These synthetic vaccines, in combination with Inovio's proprietary electroporation delivery, have been shown in humans to generate best-in-class immune responses with a favorable safety profile. Inovio's clinical programs include phase II studies for cervical dysplasia, leukemia and hepatitis C virus and phase I studies for influenza and HIV. Partners and collaborators include the University of Pennsylvania, Merck, ChronTech, National Cancer Institute, U.S. Military HIV Research Program, NIH, HIV Vaccines Trial Network, University of Southampton, US Dept. of Homeland Security, University of Manitoba and PATH Malaria Vaccine Initiative. More information is available at www.inovio.com. This press release contains certain forward-looking statements relating to our business, including our plans to develop electroporation-based drug and gene delivery technologies and DNA vaccines and our capital resources. Actual events or results may differ from the expectations set forth herein as a result of a number of factors, including uncertainties inherent in pre-clinical studies, clinical trials and product development programs (including, but not limited to, the fact that pre-clinical and clinical results referenced in this release may not be indicative of results achievable in other trials or for other indications, that the studies or trials may not be successful or achieve the results desired, that pre-clinical studies and clinical trials may not commence or be completed in the time periods anticipated, that results from one study may not necessarily be reflected or supported by the results of other similar studies and that results from an animal study may not be indicative of results achievable in human studies), the availability of funding to support continuing research and studies in an effort to prove safety and efficacy of electroporation technology as a delivery mechanism or develop viable DNA vaccines, the adequacy of our capital resources, the availability or potential availability of alternative therapies or treatments for the conditions targeted by the company or its collaborators, including alternatives that may be more efficacious or cost-effective than any therapy or treatment that the company and its collaborators hope to develop, evaluation of potential opportunities, issues involving product liability, issues involving patents and whether they or licenses to them will provide the company with meaningful protection from others using the covered technologies, whether such proprietary rights are enforceable or defensible or infringe or allegedly infringe on rights of others or can withstand claims of invalidity and whether the company can finance or devote other significant resources that may be necessary to prosecute, protect or defend them, the level of corporate expenditures, assessments of the company's technology by potential corporate or other partners or collaborators, our ability to secure new partnerships and collaborations, capital market conditions, the impact of government healthcare proposals and other factors set forth in our Annual Report on Form 10-K for the year ended December 31, 2011, our Form 10-Q for the quarter ended September 30, 2012, and other regulatory filings from time to time. There can be no assurance that any product in Inovio's pipeline will be successfully developed or manufactured, that final results of clinical studies will be supportive of regulatory approvals required to market licensed products, or that any of the forward-looking information provided herein will be proven accurate. CONTACTS: Investors: Bernie Hertel, Inovio Pharmaceuticals, 858-410-3101, firstname.lastname@example.org Media: Jeff Richardson, Inovio Pharmaceuticals, 267-440-4211, email@example.com (Logo: http://photos.prnewswire.com/prnh/20120131/LA44118LOGO) SOURCE Inovio Pharmaceuticals, Inc.