Dr. Timothy Henrich of Brigham and Women's hospital presented the disappointing news yesterday at an AIDS research conference in Florida, saying that both patients had resumed HIV medications after the virus reappeared.
The two patients, both battling HIV for years, had received bone marrow transplants to treat Hodgkin's lymphoma, a type of blood cancer. After the transplants, both showed undetectable levels of the HIV virus. The patients agreed to stop taking HIV medications to help researchers determine if the marrow transplant was responsible for the virus disappearing.
When both patients showed undetectable virus levels after several weeks without treatment (seven weeks and 15 weeks, respectively), Henrich's team revealed this finding to the medical community. But the virus reappeared in one patient in August, and in the other in November, after eight months with no HIV detected.
Heinrich said the finding demonstrates that HIV's genetic code stays latent in "reservoirs" of cells, indicating the virus is more persistent than previously realised. While researchers are disappointed in the finding, those who heard the presentation yesterday said the Boston team's findings are still dramatically important in the fight to understand and fight HIV. [The Boston Globe]