The
story of the first child known to have been cured of HIV through early
treatment with powerful doses of antiretroviral drugs — what researchers
call “sustained remission” rather than a cure — was initially announced
in March when she was two and a half.
A
handful of HIV-infected adults around the world have been described in
medical literature as newly free of the disease, most famously Timothy
Brown, also known as “the Berlin patient,” who was given a bone marrow
transplant for leukemia that wiped out his HIV as well.
But
no easy method has emerged to eradicate the three-decade-old human
immunodeficiency virus that infects 34 million people globally and is
responsible for 1.8 million deaths each year.
The
girl’s updated case report in the New England Journal of Medicine also
sought to answer questions raised by outside experts over whether she
was ever really infected, by describing DNA and RNA tests that were
positive for HIV just over a day after birth.
The
child was given antiretroviral drugs until the age of age 18 months
and, after a year and half without treatment, no sign of the disease has
returned, the article said.
“Our
findings suggest that this child’s remission is not a mere fluke but
the likely result of aggressive and very early therapy that may have
prevented the virus from taking a hold in the child’s immune cells,” said lead author Deborah Persaud, a virologist and pediatric HIV expert at the Johns Hopkins Children’s Center.
The child’s mother gave birth to her prematurely, about a month early, and had not received any prenatal care. She was unaware that she was HIV positive until she was tested at the Mississippi hospital where she delivered.
The
newborn also tested positive for HIV, and the high level found in her
blood suggested that she had become infected with human immunodeficiency
virus while in the womb, researchers said.
She
also showed signs of HIV in blood tests at 19 days of age, data that
“support the authors’ perspective that the infant was truly infected,”
said an accompanying editorial by Scott Hammer, a leading HIV scientists
at Columbia University Medical Center.
“The
big question, of course, is, ‘Is the child cured of HIV infection?’ The
best answer at this moment is a definitive ‘maybe,’”he wrote.
A
longer term follow up of the child is needed, he said, cautioning that
her case may be “unique,” even as it shows a proof of principle that may
lead to more rigorous studies down the road.
The child was given antiretroviral drugs for the first 15-18 months of her life, when she was lost to follow up.
Her mother brought her back to doctors at 23 months of age, saying she had last given her anti-HIV medication at age 18 months.
“This happened almost by accident,” said Anthony Fauci, director of the National Institute for Allergy and Infectious Diseases.
“It wasn’t that the doctor said ‘let’s stop the therapy.’ This is not recommended for home use,” he told AFP.
Tests
at 23 months were negative for HIV, and by the time the child reached
30 months of age, tests still showed no sign of HIV or HIV antibodies,
said the study.
“We’re thrilled that the child remains off medication and has no detectable virus replicating,” said pediatrician Hannah Gay of the University of Mississippi Medical Center.
“We’ve continued to follow the child, obviously, and she continues to do very well,” said Gay, who first treated her.
“There is no sign of the return of HIV, and we will continue to follow her for the long term.”
The
girl’s medical team believes the reason for her success was the early
intervention, and they hope to investigate whether treating other
infected infants within hours or days of birth could show similar
outcomes.
A
US-government funded study is set to begin in low and middle income
countries in 2014 that would test the method in HIV-infected newborns on
a wider scale, Fauci said.
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