This second untreated person living with HIV showed no evidence of intact HIV genomes in more than 1.5 billion blood and tissue cells analyzed.
- Ragon Member Xu Yu, MD, studies how HIV stores copies of its genome in human cells, resulting in life-long infection.
- In 2020, she identified an untreated HIV patient with no intact copies of HIV genomes in more than 1.5 billion blood cells analyzed, suggesting the virus had been cleared from the patient’s body.
- Her team now reports a second untreated person living with HIV who had no evidence of intact HIV genomes in more than 1.5 billion blood and tissue cells analyzed.
During infection, HIV places copies of its genome into the DNA of cells, creating what is known as a viral reservoir. In this state, the virus effectively hides from anti-HIV drugs and the body’s immune response. In most people, new viral particles are constantly made from this reservoir. Anti-retroviral therapy (ART) can prevent the new viruses from being made but cannot eliminate the reservoir, necessitating daily treatment to suppress the virus.
Some people, known as elite controllers, have immune systems that are able to suppress HIV without the need for medication. Though they still have viral reservoirs that can produce more HIV virus, a type of immune cell called a killer T cell keeps the virus suppressed without the need for medication.
Xu Yu, MD, a member of the Ragon Institute of MGH, MIT, and Harvard, has been studying the HIV reservoirs of elite controllers. Her research group identified one patient who had no intact HIV viral sequence in her genome, indicating that her immune system may have eliminated the HIV reservoir – what scientists call a sterilizing cure. Yu’s team sequenced billions of cells from this patient, known as the San Francisco Patient, searching for any HIV sequence that could be used to create new virus, and found none. This extraordinary finding, the first known incidence of a sterilizing cure without a stem cell transplant, was reported in Nature in 2020 (and Yu discusses in this video).
“These findings, especially with the identification of a second case, indicate there may be an actionable path to a sterilizing cure for people who are not able to do this on their own.”
— Xu Yu, MD, Physician investigator, Massachusetts General Hospital
Yu’s group now reports a second untreated HIV-infected patient, known as the Esperanza Patient, who, like the San Francisco Patient, has no intact HIV genomes found in more than 1.19 billion blood cells and 500 million tissue cells sequenced. This report, published in the Annals of Internal Medicine, may represent a second instance of a sterilizing cure.
“These findings, especially with the identification of a second case, indicate there may be an actionable path to a sterilizing cure for people who are not able to do this on their own,” says Yu, who is also a physician investigator at Massachusetts General Hospital.
She further explains that these findings may suggest a specific killer T cell response common to both patients driving this response, with the possibility that other people with HIV have also achieved a sterilizing cure. If the immune mechanisms underlying this response can be understood by researchers, they may be able to develop treatments that teach others’ immune systems to mimic these responses in cases of HIV infection.
Yu adds: “We are now looking toward the possibility of inducing this kind of immunity in persons on ART through vaccination, with the goal of educating their immune systems to be able to control the virus without ART.”
Reference: “A Possible Sterilizing Cure of HIV-1 Infection Without Stem Cell Transplantation” by Gabriela Turk, PhD, Kyra Seiger, BSc, Xiaodong Lian, PhD, Weiwei Sun, PhD, Elizabeth M. Parsons, BSc, Ce Gao, PhD, Yelizaveta Rassadkina, BSc, Maria Laura Polo, PhD, Alejandro Czernikier, MSc, Yanina Ghiglione, PhD, Alejandra Vellicce, MD, Joseph Varriale, MSc, Jun Lai, MSc, Yuko Yuki, DDM, Maureen Martin, MD, Ajantha Rhodes, BSc, Sharon R. Lewin, PhD, Bruce D. Walker, MD, Mary Carrington, PhD, Robert Siliciano, MD, Janet Siliciano, PhD, Mathias Lichterfeld, MD, PhD, Natalia Laufer, MD, PhD and Xu G. Yu, MD, MSc, 16 November 2021, Annals of Internal Medicine.
Additional co-authors on this study include: Gabriela Turk, PhD; Kyra Seiger, BSc; Xiaodong Lian, PhD; Weiwei Sun, PhD; Elizabeth M. Parsons, BSc; Ce Gao, PhD; Yelizaveta Rassadkina, BSc; Maria Laura Polo, PhD; Alejandro Czernikier, MSc; Yanina Ghiglione, PhD; Alejandra Vellicce, MD; Joseph Varriale, MSc; Jun Lai, MSc; Yuko Yuki, DDM; Maureen Martin, MD; Ajantha Rhodes, BSc; Sharon R. Lewin, AO, PhD; Bruce D. Walker, MD; Mary Carrington, PhD; Robert Siliciano, MD; Janet Siliciano, PhD; Mathias Lichterfeld, MD, PhD; and Natalia Laufer, MD, PhD.
Funding for this study comes from National Institutes of Health (NIH) grants HL134539, AI116228, AI078799, DA047034, AI155171, and AI150396 and by the Bill & Melinda Gates Foundation (INV-002703); NIH grants AI135940, AI114235, AI117841, AI120008, AI152979, AI130005, DK120387, and AI155233 and by amfAR (110181-69-RGCV). Lichterfeld and Yu are Associated Members of the BEAT-HIV Martin Delaney Collaboratory (UM1 AI126620). This project was funded in whole or in part by federal funds from the Frederick National Laboratory for Cancer Research under contract no. HHSN261200800001E. This research was supported in part by the Intramural Research Program of the NIH, Frederick National Laboratory, Center for Cancer Research.
[Editor’s note: Previously the headline was “Scientists Identify Second HIV Patient Who Cured Themselves of the Virus”]
An incurable, highly contagious virus brought on by definitely being within 1,5 meter distance of one another… Where’s their QR code?
Such a dreadful headline! How can a person be “themselves?” The media mangling of personal pronouns is out of control. The article indicates that the patient is a woman, so why not “herself?” Or, “Patient cured self?”
Thank you for the note about the poor grammar in the headline. It has been changed.
How do we know that this isn’t some liberal agenda to shutdown the economy and infect everyone with virus?
My cousin might have aids but nobody knows. We need HIV free cards in order to enter building same as with COVID19 so we will know who is infected so we can stop the spread of HIV. People with COVID19 are being treated worse than people with HIV.
I agree sam, HIV negative test should be required to travel from country to country just like with coronavirus and proof of HIV negative test to get on public transportation like airplanes. These infected people can have sex anywhere and spread the virus and it is not safe.
We need to stop super spreaders of HIV. This includes porn stars and sexually promiscuous individuals. Keep your infected body fluids away from uninfected persons.
If low energy Biden is so great why hasn’t he been able to stop coronavirus. If I was still president it would have magically disappeared several months ago and then operation WARP SPEED could have moved on to defeating HIV before the Chinese.