Something Happened That's Only Occurred 10 Times In History.

Dr Sharon Walmsley HIV clinic director at Toronto General Hospital presenting the Toronto Patient case at the Canadian Association of HIV Research Conference in Winnipeg 2026

A 62-year-old Toronto man known in medical literature as the Toronto Patient is on course to become the first Canadian and potentially the eleventh person in recorded history to be cured of HIV, following a bone marrow transplant that appears to have done something doctors have only ever managed to accomplish ten times before. The man was diagnosed with HIV in 1999 and given just six months to live because he was simultaneously battling Stage 4 Burkitt lymphoma, an aggressive cancer that had spread to both his brain and lymph nodes. He survived. In 2021, doctors at the University Health Network's Princess Margaret Cancer Centre and Toronto General Hospital performed a bone marrow transplant to treat the cancer, searching a global database of 47 million potential donors for a match that carried the CCR5-delta-32 genetic mutation, a rare variant that makes its carriers naturally resistant to HIV. They found one. The transplant replaced the patient's immune system with donor cells that the virus cannot infect.

Four years after the transplant, he stopped taking antiretroviral therapy in July 2025, and as of April 2026 his HIV levels remain completely undetectable using the most sensitive laboratory testing available. If he maintains that status for approximately 20 more months, he will formally join a group that includes the Berlin Patient, the London Patient, the Dusseldorf Patient, and a handful of others for whom the word cured is no longer just a hope but a verified fact. Dr. Sharon Walmsley, who has directed the HIV clinic at Toronto General for decades and was a medical intern in 1983 when she stood helplessly at the bedside of one of the city's first AIDS patients, said the small but growing number of cases like his prove that an HIV cure is possible, and that each one provides information for researchers working to find a way to eradicate HIV from the body that is accessible to more than the tiny fraction of patients currently eligible for bone marrow transplants. She stood at the podium at the Canadian Association of HIV Research Conference in Winnipeg to present the case and said she had been waiting for a moment like this for more than 40 years.

Source:https://scienceaim.com/toronto-man-cured-of-hiv-after-stem-cell-transplant/