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N Engl J Med. 2009 Feb 12;360(7):692-8. doi: 10.1056/NEJMoa0802905.

Long-term control of HIV by CCR5 Delta32/Delta32 stem-cell transplantation.

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  • 1Department of Hematology, Oncology, and Transfusion Medicine, Campus Benjamin Franklin, Charité Universitätsmedizin Berlin, Germany.


Infection with the human immunodeficiency virus type 1 (HIV-1) requires the presence of a CD4 receptor and a chemokine receptor, principally chemokine receptor 5 (CCR5). Homozygosity for a 32-bp deletion in the CCR5 allele provides resistance against HIV-1 acquisition. We transplanted stem cells from a donor who was homozygous for CCR5 delta32 in a patient with acute myeloid leukemia and HIV-1 infection. The patient remained without viral rebound 20 months after transplantation and discontinuation of antiretroviral therapy. This outcome demonstrates the critical role CCR5 plays in maintaining HIV-1 infection.

2009 Massachusetts Medical Society

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