In the 1990s, doctors in Berlin began a cutting-edge treatment programme that led to a patient being cured of HIV/AIDS. The so-called "Berlin patient" was Timothy Ray Brown: he was suffering from leukemia as well as HIV/AIDS, and was given a bone marrow transplant from a donor with a rare genetic mutation which killed off the HIV virus. Timothy Ray Brown was a campaigner for AIDS research until his death, from leukemia, in 2020. Ashley Byrne speaks to his partner, Tim Hoeffgen.

PHOTO: Timothy Ray Brown in 2012 (Getty Images)