Norwegian Man HIV-Free After Brother's Stem Cell Transplant

A Norwegian man is celebrating what he calls "winning the lottery twice" after becoming HIV-free through a stem cell transplant that also cured his blood cancer.

The 63-year-old Oslo patient received stem cells from his older brother, who unknowingly carried a rare genetic mutation that locks HIV out of cells. After two years without antiviral medication, doctors found zero traces of the virus in his bone marrow, blood, or gut tissue.

The transplant was originally performed to treat the man's fatal blood cancer, diagnosed in 2017. He'd been living with HIV since 2006, managing the virus with daily medication.

His brother's stem cells carried a mutation in the CCR5 gene, found in only about 1% of Northern Europeans. This genetic quirk essentially closes the door HIV uses to enter immune cells.

Over time, the donor's cells completely replaced the patient's immune system. Doctors monitored closely, testing for any signs the virus might return.

The Bright Side

This breakthrough offers fresh hope for understanding how HIV remission works. Researchers published their findings in Nature Microbiology, noting that the absence of HIV-specific immune responses appears to signal sustained remission.

While this approach isn't practical for most of the 38 million people living with HIV worldwide, it provides a crucial roadmap. Each successful case teaches scientists more about what a functional cure looks like.

The patient's case is unique because his donor was a family member who happened to carry the protective mutation. Previous cures required unrelated donors from registries, making matches extraordinarily rare.

Doctors emphasize this was a high-risk procedure, justified only because the patient needed treatment for life-threatening cancer. The transplant itself carries significant dangers, including rejection and serious complications.

Still, the Oslo patient's success adds to a growing body of evidence. Since the first Berlin patient achieved HIV remission in 2008, each new case refines our understanding of how the virus can be defeated.

Scientists now have ten examples proving long-term HIV remission is possible, giving researchers clearer targets for developing safer, more accessible treatments that could help millions worldwide.