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Antares Pharma Announces Partners Update of LibiGel® Safety Study

Antares Pharma, Inc. (NYSE Amex:AIS) partner BioSante Pharmaceuticals announced today that based upon a review of study conduct and blinded data from the LibiGel Phase III Cardiovascular and Breast Cancer Safety Study, the LibiGel Safety Study External Executive Committee has recommended continuation of the LibiGel Phase III clinical program. A very low cardiovascular event rate has occurred thus far in the LibiGel Phase III clinical studies.

The Executive Committee evaluated study information from over 1,000 women enrolled totaling approximately 600 women-years of exposure in the Phase III LibiGel safety study. All serious adverse events including those in the cardiovascular categories as well as non-serious adverse events have been reviewed by the committee.

Antares President and Chief Executive Officer, Paul K. Wotton, Ph.D. said, “We are very pleased to see further and encouraging progress made with LibiGel, which uses the Antares Pharma ATD system, an FDA approved technology. A transdermal gel offers an ideal means to deliver drugs like testosterone in a controlled and reproducible way with a convenient to use dosage form. We have an advanced and deep pipeline of ATD based products, including LibiGel, where we have significant intellectual property and commercialization rights. We expect to earn additional milestone and royalty payments in the future from our multi-product agreement with BioSante.”

Under the terms of the agreement, BioSante is responsible for all development activities for LibiGel and Antares has retained international commercialization rights to LibiGel in significant territories including the European Union and Japan.

BioSante additionally stated that the Phase III Cardiovascular and Breast Cancer Safety Study is a randomized, double-blind, placebo-controlled, multi-center, cardiovascular events and breast cancer study that will enroll between 2,400 and 3,100 women exposed to LibiGel or placebo for 12 months. An NDA can be filed and reviewed by FDA, possibly leading to approval of LibiGel, at that time. After NDA submission and potential approval of LibiGel, BioSante will continue to follow the women enrolled in the study for an additional four years.

The LibiGel safety study is tracking a list of cardiovascular events including cardiovascular death, myocardial infarction and stroke in women 50 years of age or older and suffering from at least two cardiovascular risk factors including hypertension and diabetes. The objective of the safety study is to show the relative safety of testosterone compared to placebo in the number of cardiovascular events. The incidence of breast cancer also will be tracked over the course of the study.

In addition to the Phase III cardiovascular and breast cancer safety study, BioSante is conducting two LibiGel Phase III efficacy trials. The Phase III efficacy trials of LibiGel in the treatment of female sexual dysfunction (FSD) are double-blind, placebo-controlled trials that will enroll up to approximately 500 surgically menopausal women each for a six-month clinical trial. The efficacy trials are being conducted under an FDA approved SPA (special protocol assessment agreement).

As previously announced by BioSante, treatment with LibiGel in a Phase II clinical trial significantly increased satisfying sexual events in surgically menopausal women suffering from FSD.

About ATD™ Gel Technology

ATD™ Gel Technology is a hydroalcoholic transdermal gel containing less than 50 percent ethanol and a patented mixture of penetration enhancers. The matrix including testosterone is designed to simultaneously deliver the drug across the skin in a controlled and sustained fashion over a 24-hour period, and result in therapeutic plasma levels. The gel is crystal clear and cosmetically appealing, and dries readily after application to the abdomen, thighs, arms, or shoulders without leaving residues. Due to the low ethanol content, the gel is minimally irritating, as demonstrated by a similar FDA-approved formulation using ATD™ Gel Technology, ELESTRIN™ (low-dose estradiol for treating menopausal hot flashes).

About Antares Pharma

Antares Pharma is a product development company committed to improving pharmaceuticals through its patented drug delivery systems.Antares has multiple development partnerships with leading pharmaceutical companies such as Teva Pharmaceuticals. The Company’s products are designed to improve safety and efficacy profiles by minimizing dosing and reducing side effects while enabling improved patient compliance. The Company’s internal product candidate, Anturol™, an oxybutynin ATD™ gel for the treatment of OAB (overactive bladder), is currently under evaluation in a pivotal Phase III trial.Antares has three validated drug delivery systems: the ATDTM Advanced Transdermal Gel Delivery system, injection technology platforms including both VibexTM disposable pressure assisted auto injectors and Vision® reusable needle-free injectors; and Easy TecTM oral disintegrating tablets (ODT). Two of the systems have generated FDA approved products. Antares Pharma leverages its multiple drug delivery systems to add value to existing drugs and to create new products. Antares Pharma has corporate headquarters in Ewing, New Jersey, with subsidiaries performing research, development, manufacturing and product commercialization activities in Minneapolis, Minnesota and Basel, Switzerland.

Safe Harbor Statement

This press release contains forward-looking statements within the meaning of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements include statements related to the Company’s future financial performance, and other statements which are other than statements of historical facts. In some cases, you can identify forward-looking statements by terminology such as "may," "will," "should," "expects," "intends," "plans," “anticipates,” "believes," "estimates," "predicts," "projects," "potential," "continue," and other similar terminology or the negative of these terms, but their absence does not mean that a particular statement is not forward-looking. Such forward-looking statements are not guarantees of future performance and are subject to risks and uncertainties that may cause actual results to differ materially from those anticipated by the forward-looking statements. These risks and uncertainties include, among others: that the Company may experience difficulties or delays in the initiation, progress, or completion of its clinical trials, including the phase 3 trial of Anturol, whether caused by competition, adverse events, investigative site initiation rates, patient enrolment rates, regulatory issues, or other factors; that clinical trials may not demonstrate that Anturol is both safe and effective for the treatment of patients with overactive bladder syndrome; that the safety and/or efficacy results of the phase 3 trial of Anturol may not support an application for marketing approval in the United States or any other country; that an application for marketing approval may not be accepted for review or at all by the FDA or any other regulatory authority; and that the Company may lack the financial resources and access to capital to fund clinical trials. Additional information concerning these and other factors that may cause actual results to differ materially from those anticipated in the forward-looking statements is contained in the "Risk Factors" section of the Company's Annual Report on Form 10-K for the year ended December 31, 2008, and in the Company's other periodic reports and filings with the Securities and Exchange Commission. The Company cautions investors not to place undue reliance on the forward-looking statements contained in this press release. All forward-looking statements are based on information currently available to the Company on the date hereof, and the Company undertakes no obligation to revise or update these forward-looking statements to reflect events or circumstances after the date of this press release, except as required by law.


Antares Pharma
Robert Apple
Chief Financial Officer
In-Site Communications, Inc.
Lisa Wilson

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