SOURCE: VIRxSYS Corporation

VIRxSYS Corporation

November 15, 2011 09:10 ET

VIRxSYS Issued U.S. Patents for Its Lentiviral Vector and SMaRT RNA Platforms

GAITHERSBURG, MD--(Marketwire - Nov 15, 2011) - VIRxSYS Corporation, a Maryland-based biotechnology company, today announced that the United States Patent and Trademark Office has issued two patents to VIRxSYS for the Company's proprietary HIV-based lentiviral vector and Spliceosome Mediated RNA Trans-splicing (SMaRT™) platform technologies, bringing the number of U.S. patents awarded to VIRxSYS in 2011 to five.

The first newly issued patent, U.S. Patent No. 8,041,633, further broadens VIRxSYS's intellectual property for its lentiviral vector stable cell line-based large scale production capabilities. This patent strengthens VIRxSYS's position as a leader in the clinical development of HIV-based lentiviral vectors. The production methods covered by U.S. Patent No. 8,041,633 will be used for the later stage clinical production of our lead HIV therapeutic vaccine candidate, VRX1273.

With this new patent, VIRxSYS's lentiviral vector-based portfolio of intellectual property currently holds 63 patents in addition to a number of patent applications pending in the U.S. and worldwide.

The second issued patent, U.S. Patent No. 8,053,232, further strengthens and broadens VIRxSYS's ability to treat serious human diseases with its SMaRT technology platform, and in particular, patients with alpha-1-antitrypsin (AAT) deficiency. With regards to clinical development with SMaRT, the Company is pushing forward the development of an innovative method of enhancing HDL (the good cholesterol) through the production of apolipoprotein A-I (apoA-I, the major protein component of HDL) in the liver.

With this new patent, the VIRxSYS's SMaRT-based portfolio of intellectual property currently holds 34 patents in addition to a number of patent applications pending in the U.S. and worldwide.

"These patents further strengthen our position as a leader in the clinical development of lentiviral vector-based vaccine and RNA therapies," said Lawrence Michaelis, MD, VIRxSYS CEO and Chairman of the Board. "These patents are in an area of incredibly high commercial value for VIRxSYS. Our Lentiviral vector-based HIV therapeutic vaccine candidate, VRX1273, has the potential to revolutionize the treatment of HIV while our RNA-based HDL enhancing therapy, VRX1243, using our SMaRT technology, has the ability to overcome apoA-I deficiencies and eventually atherosclerosis."

U.S. Patent No. 8,043,611 represents the fourth U.S. patent issued to VIRxSYS in 2011. This patent strengthens VIRxSYS's intellectual property coverage for its lentiviral vector stable cell line technology by optimizing transcript expression and minimizing toxicity associated with over expression of transgenes. VIRxSYS will employ this stable cell line technology for the production of its lentiviral vector-based HIV therapeutic vaccine candidate, VRX1273.

U.S. Patent No. 8,053,232 represents the fifth U.S. patent issued to VIRxSYS in 2011. This patent further strengthens VIRxSYS's SMaRT-based intellectual property position. Specifically, the patent covers the correction of alpha-1 antitrypsin genetic defects using SMaRT-based therapeutic constructs encoding corrective SERPINA1. Genetic defects in SERPINA1 are responsible for AAT deficiency. The methods and compositions of the present invention can thus be used for correction of SERPINA1 defects and to reduce the accumulation of toxic AAT protein in liver cells.

About VIRxSYS
VIRxSYS Corporation is a biotechnology company with platform technologies focused on the development of novel therapies for serious human diseases. The Company's proprietary platforms include: (i) lentiviral vectors as vaccines and curative gene delivery vehicles to the core of human cells, and (ii) RNA trans-splicing for the repair and reprogramming of genes. More information can be found at www.virxsys.com.

Forward-Looking Statements
This release may contain forward-looking statements regarding VIRxSYS Corporation's activities. Any such forward-looking statements involve, and are subject to, many known and unknown risks and uncertainties common to any drug or therapy development company, including, but not limited to, whether development efforts will succeed, whether products will receive regulatory approval, and whether products will achieve commercial success. Such risks and uncertainties could cause VIRxSYS' actual results, performance or achievements to be different from those anticipated and such differences could be material. Further, any forward-looking statements contained in this release are made only as of the date it was created, and VIRxSYS expressly disclaims any obligation to update any such forward-looking statements, whether as a result of new information, future events, or otherwise.

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