FDA delays decision on first drug to prevent HIV

Federal health regulators have delayed a decision on whether to approve the first pill shown to prevent HIV infection, the drug's manufacturer says.

Gilead Sciences disclosed Friday that the Food and Drug Administration will take three more months to review its application for Truvada, after the company submitted additional materials to the agency earlier this month.

In May, a panel of experts recommended approval of the daily pill for healthy people who are at high risk of contracting HIV, including gay and bisexual men. The vote was nonbinding, though the FDA often follows the group's advice.

Gilead said it submitted updated information on its planned safety materials for patients and doctors using the drug. The FDA typically extends its reviews after receiving such information.

The FDA is now expected to rule by Sept. 14, the company said in a statement.

Gilead Sciences Inc., based in Foster City, Calif., has marketed Truvada since 2004 as a treatment for people who are infected with the virus. The medication is a combination of two older HIV drugs, Emtriva and Viread.

Truvada made headlines in 2010, when government researchers showed it could actually prevent people from contracting HIV when used as a precautionary measure. A three-year study found that daily doses cut the risk of infection in healthy gay and bisexual men by 42 percent, when accompanied by condoms and counseling. Last year another study found that Truvada reduced infection by 75 percent in heterosexual couples in which one partner was infected with HIV and the other was not.

An estimated 1.2 million Americans have HIV, which develops into AIDS unless treated with antiviral drugs. AIDS causes the body's immune system to break down, leading to infections which are eventually fatal. Gay and bisexual men account for the majority of cases

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