Woman reported cured of HIV after stem cell transplant


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A US patient with leukaemia has become the first woman and the third person to date to be cured of HIV after receiving a stem cell transplant from a donor who was naturally resistant to the virus that causes Aids, researchers reported.

The case of a middle-aged woman of mixed race, presented at the Conference on Retroviruses and Opportunistic Infections in Denver, is also the first involving umbilical cord blood, a modern approach that may make the treatment more widely available.

Since receiving the cord blood to treat her acute myeloid leukaemia — a cancer that starts in blood-forming cells in the bone marrow — the woman has been in remission and free of the virus for 14 months, without the need for potent HIV treatment known as antiretroviral therapy.

The two previous cases occurred in males — one white and one Latino — who had received adult stem cells, which are more frequently used in bone marrow transplants.

"This is now the third report of a cure in this setting and the first in a woman living with HIV," said Sharon Lewin, president elect of the International Aids Society.

The case is part of a larger US-backed study led by Dr Yvonne Bryson of the University of California Los Angeles (UCLA), and Dr Deborah Persaud of Johns Hopkins University in Baltimore. It aims to follow 25 people with HIV who undergo a transplant with stem cells taken from umbilical cord blood for the treatment of cancer and other serious conditions.

Patients in the trial first undergo chemotherapy to kill off the cancerous immune cells. Doctors then transplant stem cells from people with a specific genetic mutation in which they lack receptors used by the virus to infect cells.

Scientists believe these people then develop an immune system resistant to HIV.

Ms Lewin said bone marrow transplants are not a viable strategy to cure most people living with HIV. But the report "confirms that a cure for HIV is possible and further strengthens using gene therapy as a viable strategy for an HIV cure", she said.

The study suggests an important element to the success is the transplantation of HIV-resistant cells. Previously, scientists believed that a common stem cell transplant side effect called graft-versus-host disease, in which the donor immune system attacks the recipient’s immune system, played a role in a possible cure.

"Taken together, these three cases of a cure post-stem cell transplant all help in teasing out the various components of the transplant that were absolutely key to a cure," Ms Lewin said.

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Also on December 7 to 9, the third edition of the Gulf Car Festival (www.gulfcarfestival.com) will take over Dubai Festival City Mall, a new venue for the event. Last year's festival brought together about 900 cars worth more than Dh300 million from across the Emirates and wider Gulf region – and that first figure is set to swell by several hundred this time around, with between 1,000 and 1,200 cars expected. The first day is themed around American muscle; the second centres on supercars, exotics, European cars and classics; and the final day will major in JDM (Japanese domestic market) cars, tuned vehicles and trucks. Individuals and car clubs can register their vehicles, although the festival isn’t all static displays, with stunt drifting, a rev battle, car pulls and a burnout competition.

Updated: June 20, 2023, 8:52 AM`