Press Release

 
VGX Pharmaceuticals announces publication in Molecular Therapy
regarding the Company’s GHRH gene therapy product
Blue Bell, PA – May 22, 2008 –

VGX Pharmaceuticals Inc. (VGX) and its affiliate, VGX Animal Health Inc. (VGXAH), announced today the publication in Molecular Therapy, the official journal of the American Society for Gene Therapy (http://www.nature.com/mt/index.html), of their work related to the Company’s leading Growth Hormone Releasing Hormone (GHRH) gene therapy product for the treatment of cancer- related anemia in companion dogs with spontaneous malignancies (Bodles-Brakhop et al., Double-blinded, Placebo-controlled Plasmid GHRH Trial for Cancer-associated Anemia in Dogs, Molecular Therapy, 2008, 16:862-870).

Cachexia and its associated disorders affect up to 5 million people in the United States alone and represent common complications of cancer, aging, acquired immunodeficiency syndrome, chronic kidney or heart failure. Prevalent cancer-associated conditions such as fatigue and poor quality of life may be induced by the cancer itself or by cancer treatments such as chemotherapy, with anemia being one of its leading causes in patients. Similar conditions and symptoms are shared by humans and animals alike.

In the published study, VGX researchers tested the use of a non-viral DNA molecule, called a plasmid, which encodes for growth hormone-releasing hormone (GHRH) in 55 companion dogs with spontaneous malignancies and anemia receiving a cancer-specific treatment in a double-blinded, placebo-controlled trial. Dogs received a single, low dose of plasmid or placebo, delivered intramuscularly by the Company’s CELLECTRA® constant current electroporation device. Plasmid-treated dogs had increases in all red blood cell count, hemoglobin and hematocrit. Post-hoc analysis of the GHRH-treated group showed that responder dogs survived significantly longer than non-responders and controls. In addition, quality of life, as defined by 10 different parameters, improved dramatically with treatment including increases in appetite and decreases in complications of cancer-related therapies, such as diarrhea and vomiting.

“Publication of this study stresses the potential of VGX technology to improve human and animal health,” stated Dr. J. Joseph Kim, President and Chief Executive Officer. “We are optimistic that our novel GHRH programs will significantly expand the treatment options for cancer patients.”

VGX Pharmaceuticals is waiting for approval from the Food and Drug Administration to study the GHRH treatment (VGX-3200) in humans. VGX Animal Health also plans to develop this product for companion dogs and cats.


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About VGX Pharmaceuticals
VGX Pharmaceuticals is a biopharmaceutical company with small molecule and biologic product candidates for the treatment of infectious diseases, cancer, and inflammatory diseases. The Company's clinical development programs include PICTOVIR™ for HIV infection, which is in Phase II clinical trials, PENNVAX™-B for HIV infection, which is in 2 separate Phase I clinical trials, and VGX-1027 for inflammatory diseases, which is in Phase I clinical trials. In addition, the Company has filed INDs for VGX-3100, a DNA therapeutic vaccine for cervical cancer; VGX-3200, a novel DNA therapy that utilizes GHRH for the treatment of cancer cachexia and anemia; and VGX-3400, a DNA preventative vaccine for avian influenza. VGX has established a vertically-integrated DNA Vaccines and Therapies Platform with extensive capabilities including SynCon™ DNA-based product candidates, the CELLECTRA® delivery device, and efficient cGMP plasmid manufacturing facilities. The cGMP facilities are used for VGX’s own product supplies and for contract manufacturing. Vertical control over key aspects of product development has enabled the Company to consistently develop multiple product candidates, from bench-to-IND filing, within 1 year. 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.


About VGX Animal Health
VGX Animal Health, Inc. was formed in 2007 as a majority-owned subsidiary of VGX Pharmaceuticals, Inc. (VGXP) specializing in animal health therapeutics. VGXAH’s products and technology were initially developed by ADViSYS Inc, which was founded in 1997 and acquired by VGX Pharmaceuticals in early 2007. VGXAH’s lead product, LifeTide™ SW 5, was approved in Australia in January 2008. The product is an injectable plasmid encoding for porcine Growth Hormone Release Hormone (“GHRH”). In addition, the Company has conducted extensive pre-clinical trials for other applications of its proprietary plasmid-based GHRH therapy in both food and companion animals. Treatment of cancer cachexia, anemia, and improved milk production are just a few of the many potential applications of this technology in animal health. VGXAH’s product candidates and technology programs are protected by the Company's extensive global intellectual property portfolio. More information about VGXAH can be found at www.vgxah.com.

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


© 2008 VGX™ Pharmaceuticals. All rights reserved.