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HTLV-1 and ATLL: Epidemiology, Oncogenesis, and Opportunities for Community-Informed Research in the United States
Journal article   Open access   Peer reviewed

HTLV-1 and ATLL: Epidemiology, Oncogenesis, and Opportunities for Community-Informed Research in the United States

Adrian Altieri, Sean Patrick Reilly, Abu Mansalay, Alan Soo-Beng Khoo, Nettie Johnson, Zafar K. Khan, Amy Leader, Pooja Jain and Pierluigi Porcu
Viruses, v 17(10), 1333
30 Sep 2025
DOI: https://doi.org/10.3390/v17101333
PMID: 41157604
Featured in Collection :   Research Supported by Drexel Libraries' OA Programs
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https://doi.org/10.3390/v17101333View
Published, Version of Record (VoR)Open Access Discount via Drexel Libraries Read and Publish Program 2025CC BY V4.0,  Open

Abstract

HTLV-1 retroviruses oncogenic viruses infection and cancer
Human T-cell leukemia virus type 1 (HTLV-1), the first oncogenic human retrovirus, causes adult T-cell leukemia/lymphoma (ATLL), an aggressive neoplasm of mature CD4+ T-cells that is incurable in most patients and is associated with a median survival of less than 1 year. HTLV-1 also causes inflammatory disorders, including HTLV-associated myelopathy/tropical spastic paraparesis (HAM/TSP) and uveitis. The estimated lifetime risks of ATLL and HAM/TSP in HTLV-1 carriers are 3–5% and 0.25–1.8%, respectively. Although there is uncertainty about other health effects of HTLV-1, a recent meta-analysis showed an association between HTLV-1 and cardiovascular, cerebrovascular, and metabolic diseases and a 57% increased risk of early mortality in HTLV-1 carriers, independent of ATLL or HAM/TSP. Furthermore, emerging studies in endemic areas show that outcomes for common cancers, such as cervical cancer and lymphoma (non-ATLL), are inferior in HTLV-1 carriers compared to publicly reported data. Thus, the impact of HTLV-1 may be greater and more diverse than currently understood. This review provides an outline of the prevalence and impact of HTLV-1 and associated disorders in the US, focused on—but not limited to—ATLL, with an emphasis on the social determinants of health that can affect the success of screening and prevention strategies. We also discuss the mechanisms by which HTLV-1 drives the pathogenesis of ATLL and potential strategies for early diagnosis and intervention. Finally, we conclude by suggesting approaches to designing and implementing community-informed research initiatives in HTLV-1 and ATLL.

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Collaboration types
Domestic collaboration
Web of Science research areas
Virology
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