Press Release

 
VGX Pharmaceuticals Announces a New Site Opening for Phase II Clinical Trials of VGX–410C for the Treatment of Chronic Hepatitis C Infection
Blue Bell, PA – May 15, 2006 –

VGX Pharmaceuticals announced today that the Company has opened an additional site at St. Louis University in Missouri for the Phase II clinical trials of VGX-410C for the treatment of chronic hepatitis C infection. The Company had initiated this Phase II clinical trial for VGX-410C in the fourth quarter of 2005 at the Hospital of University of Pennsylvania as the initial site and currently is in progress.

Dr. Bruce Bacon, a Director at the Division of Gastroenterology and Hepatology at St. Louis University, will lead the studies as a Principal Investigator. This clinical trials site has access to over 2000 hepatitis C infected patients and has participated in multiple investigational drug studies for hepatitis C. They plan to enroll up to 25 patients in this Phase II studies. The Company expects to finish the studies by the fourth quarter of 2006.

VGX-410C is an investigational drug for treatment of chronic hepatitis C infection. VGX-410C represents the first drug in a novel class of HCV IRES inhibitors under development. It is an orally active, small-molecule drug that provides once a day convenience. VGX-410C prevents HCV replication by suppressing HCV translation, ultimately blocking the HCV replication process. As all the genotypes of HCV use the same pathway, this drug target should be effective for all HCV genotypes. Currently approved drugs are effective only in about 30% to 50% of patients with chronic hepatitis C infection in the United States. Additionally, those approved drugs are toxic in many patients, resulting in discontinuation of treatment.

“We are pleased to add St. Louis University as a clinical site for VGX-410C,” says J. Joseph Kim, Ph.D., President and CEO of VGX Pharmaceuticals. “VGX-410C could make a significant impact for HCV treatment and the new site at St. Louis University will help us to accelerate the clinical trials greatly” said Dr. Kim.


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About VGX Pharmaceuticals
VGX Pharmaceuticals is a leading biopharmaceutical company with strong product candidates for the treatment of infectious diseases including HIV and hepatitis C virus (HCV) as well as cancer and inflammatory diseases. The Company’s clinical development programs include PICTOVIR™ for HIV infection and VGX-410C for chronic HCV infection, which are currently in Phase II clinical trials. In addition, a Phase I clinical trial will be initiated in 2006 for the Company’s lead cancer drug compound, VGX-150 for the treatment of Melanoma. Moreover, VGX Pharmaceuticals’ therapeutic platform is designed to advance a strong and continual pipeline of additional drug candidates into the clinic with VGX-100 for cancer therapy and VGX-1027 and VGX-750 for inflammatory diseases currently in development. The product candidates and technology programs are protected by the Company’s extensive global intellectual property portfolio. More information about VGX can be found at www.vgxp.com.

Company Contact:
Kevin W. Rassas
Vice President
Tel 267.440.4208
Fax 267.440.4242
E-mail: Rassas@vgxp.com
www.vgxp.com