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HIV & AIDS Health Center

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Child 'Cured' of HIV Remains Free of Virus: Report

Treatment started shortly after birth seems to have kept virus from getting a foothold in her immune system


Gay also chose to employ a combination of three antiretroviral drugs, all at doses commonly used to treat HIV-infected infants, and kept the girl on the medications until she was 18 months old. This prevented the virus from mounting any drug resistance before it could be wiped clean from her body, Luzuriaga said.

Tests showed progressively diminishing HIV levels in the infant's blood, until it reached undetectable levels 29 days after birth. The child remained on antiretrovirals until 18 months of age, at which point doctors said they lost track of her and she stopped treatment.

Doctors next saw her about 10 months after her treatment ceased. The child underwent repeated standard HIV tests, which detected no virus in her blood.

The two factors -- timing and medication -- appear to have prevented HIV from gaining a foothold in the girl's immune system. The virus was unable to create a reservoir in her body in which dormant HIV can hide and later reignite when drug therapy is suspended.

"What studies in other babies have shown us is if you treat very early, you're not only able to treat the viral replication but also able to limit the number of cells in which HIV integrates itself into the host genes," Luzuriaga said. "Basically, HIV makes copies of DNA and that DNA integrates itself into host genes. That's the barrier to cure. As long as you have those white blood cells floating around the body that have HIV stitched into the host DNA, the patient is not cured."

A key point is that the child exhibits none of the immune characteristics seen in "elite controllers," the tiny percentage of HIV-infected people whose immune systems are so active that they can keep the virus in check without treatment, the researchers said. The absence of these characteristics indicates that early therapy -- rather than natural immune mechanisms -- led to the child's remission.

Based on this girl's case, a federally funded study set to begin in early 2014 will test the early treatment method to determine whether the approach could be used in all HIV-infected newborns.

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