Man Cured of HIV After Bone Marrow Transplant From Brother

A man in Norway has been functionally cured of HIV after receiving bone marrow from his brother, marking a medical milestone that could reshape our understanding of how to fight the virus.

The 63-year-old patient received the transplant from his sibling, who carries a rare genetic mutation called CCR5Δ32 that makes immune cells resistant to HIV. This mutation prevents the virus from attaching to cells, essentially locking HIV out of the body's defenses.

After the transplant, the donor's healthy cells completely replaced the patient's HIV-infected bone marrow. His T cell count, a key measure of immune system health, soared to normal levels within a year and stayed there even after he stopped taking antiretroviral drugs two years later.

Researchers tested his blood, gut tissue, and bone marrow searching for hidden pockets of HIV. They found none, even in places where the virus typically hides in patients taking standard medications.

What makes this case special is the sibling connection. While six other people have achieved HIV remission through bone marrow transplants, all received donations from unrelated donors with the same genetic mutation.

Why This Inspires

This breakthrough shows that family donors can work just as well as unrelated matches, potentially expanding treatment options for people who need bone marrow transplants for other conditions like cancer. The close genetic match between siblings might reduce complications while still eliminating HIV.

The treatment remains risky and is only appropriate for patients who already need a bone marrow transplant for another serious illness. Complications can include severe infections or graft versus host disease, where donor cells attack the recipient's body.

Still, every successful case teaches scientists more about how HIV hides in the body and how we might defeat it. Each person who achieves remission adds another piece to the puzzle of finding a cure that works for everyone.

The study, published in Nature Microbiology, demonstrated complete replacement of infected cells throughout the body's immune tissues, something researchers had never fully confirmed before. This complete transformation is key to understanding why some transplants lead to lasting remission.

For the millions living with HIV worldwide, this research offers something powerful: proof that the virus can be beaten.