Vancouver (AFP) – A French teenager born with HIV has been in remission for 12 years after stopping her medication, a world-first that renews hope for the prospect of early treatment, researchers said Monday.

Never before have scientists known of a case in which an HIV-infected child goes into long-term remission, said the research presented at the International AIDS Society meeting in this western Canadian city.

“We can detect HIV in the cells, but what we cannot detect is viral replication in the plasma,” Saez-Cirion told AFP in an interview.

“We don’t know yet why this girl was able to control the infection,” he added.

The girl does not have the genetic factors associated with natural control of infection, which has been seen in a rare group of patients.

“Most likely she has been in virological remission for so long because she received a combination of antiretrovirals very soon after infection,” said the report.

The young woman, whose identity was not revealed, was infected with HIV either in utero or during childbirth.

Doctors decided not to resume antiretroviral treatment for the child, but monitored her.

Researchers said the unconventional case bolsters growing evidence in adults that starting treatment is essential immediately after HIV infection.

Her case “suggests that long-term remission after early treatment is possible in children infected by HIV,” said the report.

– Single case –

“This case is going to be inspiring for people living with HIV and working in the field,” said scientist Sharon Lewin, who co-chaired a symposium earlier this week on finding a cure for HIV.

“My reservations are, it’s a single case,” Lewin told AFP.

“It’s also uncertain whether the teen would have controlled (her HIV infection) without any treatment. We know one percent of people who become infected naturally control the virus and don’t require treatment.”

The girl’s case may not be unique, but it is the first identified by researchers, said Saez-Cirion.

“I’m sure there will be others in the future,” he said, noting there are still relatively few studies of children infected at birth who are now young adults and have been monitored for their entire lives.

Lewin cautioned that no one should become complacent about finding a cure in the face of growing evidence showing it is possible to treat HIV.

“The reality is there are still two million new infections and 1.5 million deaths a year from HIV and 35 million living with HIV,” said Lewin.

“Whether we can really fund that, sustain and keep people in lifelong care is unclear.”

Saez-Cirion said the findings offer direction for future research.

The case “shows that remission is possible, but rare. We need to understand why it’s not common, and which mechanisms are (involved) so that we can treat a larger population.”