Inhibitex Receives Fast Track Designation for INX-189 for the Treatment of Chronic Hepatitis C Infections

ATLANTA--(BUSINESS WIRE)-- Inhibitex, Inc. (Nasdaq: INHX) today reported that the U.S. Food and Drug Administration (“FDA”) has designated the investigation of INX-08189 (“INX-189”), a potent guanosine nucleotide polymerase inhibitor for the treatment of chronic hepatitis C viral infection, as a Fast Track development program. Under the FDA Modernization Act of 1997, Fast Track programs are designed to facilitate the development and expedite the review of new drugs that are intended to treat serious or life threatening conditions and that demonstrate the potential to address unmet medical needs. The characteristics of INX-189 that contributed to it being granted Fast Track status include a high genetic barrier to resistance, its pan-genotypic activity, and once-daily oral dosing.

“The FDA’s fast track designation for INX-189 is reflective of its unique features and the need for novel antiviral drugs that demonstrate the potential to provide better clinical outcomes and improved tolerability for the millions of individuals suffering from chronic hepatitis C infection,” commented Dr. Joseph Patti, Inhibitex’s Chief Scientific Officer and Senior Vice President of Research and Development.

The Company reported interim data from the first two cohorts of its ongoing Phase 1b clinical trial of INX-189 on January 9, 2011 and anticipates completing this trial by the end of the first quarter of 2011.

About HCV and INX-189

Hepatitis C is a disease of the liver caused by HCV. It is estimated that over 4 million Americans and 170 million individuals worldwide are infected with HCV, the majority of which represent chronic infections that can cause liver disease, cirrhosis and cancer. Chronic hepatitis C is the leading cause of liver transplants in the United States.

Inhibitex is developing a series of proprietary nucleotide inhibitors that target the RNA-dependent RNA polymerase (NS5b) of HCV. INX-189 is a protide of a 2’-C-methylguanosine analogue. The Company believes that preclinical and clinical studies of INX-189 completed to-date support its potential as a potent, once-daily, low dose oral therapy amenable to combination with other antivirals for the treatment of patients with all known genotypes of HCV.

About Inhibitex

Inhibitex, Inc. is a biopharmaceutical company focused on developing products to prevent and treat serious infectious diseases. In addition to INX-189, the Company’s clinical stage antiviral pipeline includes FV-100, a bicyclic nucleoside inhibitor in Phase II development for the prevention and reduction of shingles-associated pain. The Company also has additional HCV nucleotide polymerase inhibitors in various stages of preclinical development and has licensed the use of its proprietary MSCRAMM® protein platform to Pfizer for the development of active staphylococcal vaccines. For additional information about the Company, please visit

Safe Harbor Statement

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 that involve substantial risks and uncertainties. All statements, other than historical facts included in this press release, including statements regarding the Company’s belief that the results of preclinical and clinical studies of INX-189 to-date support its potential as a highly potent, once-daily, oral therapy amenable to combination with other anti-virals for the treatment of patients with all known genotypes of HCV, are forward looking statements. These intentions, expectations, or results may not be achieved in the future and various important factors could cause actual results or events to differ materially from the forward-looking statements that the Company makes, including the risk that; the results of ongoing or future preclinical or clinical studies of INX-189 alone or in combination with other anti-viral compounds not supporting its further development for lack of safety, tolerability, anti-viral activity, or any other reason; either the Company, the FDA, a data safety monitoring board or an investigational review board suspending or terminating the clinical development of INX-189 at any time for lack of safety, tolerability, anti-viral activity, or any other reason; obtaining, maintaining and protecting the intellectual property incorporated into and supporting the commercial viability of the Company’s product candidates; and other cautionary statements contained elsewhere herein and in its Annual Report on Form 10-K for the year ended December 31, 2009, as filed with the Securities and Exchange Commission, or SEC, on March 26, 2010, and its Quarterly Report on Form 10-Q for the quarter ended September 30, 2010, as filed with the SEC on November 15, 2010. Given these uncertainties, you should not place undue reliance on these forward-looking statements, which apply only as of the date of this press release.

There may be events in the future that the Company is unable to predict accurately, or over which it has no control. The Company's business, financial condition, results of operations and prospects may change. The Company may not update these forward-looking statements, even though its situation may change in the future, unless it has obligations under the Federal securities laws to update and disclose material developments related to previously disclosed information. The Company qualifies all of the information contained in this press release, and particularly its forward-looking statements, by these cautionary statements.

Inhibitex® and MSCRAMM® are registered trademarks of Inhibitex, Inc.


Inhibitex, Inc.
Russell H. Plumb, Chief Executive Officer, 678-746-1136
[email protected]
The Trout Group
Lee M. Stern, CFA, 646-378-2922
[email protected]


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