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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Dichotomy in Fatal Outcomes in a Large Cohort of People Living with HTLV-1 in Sao Paulo, Brazil

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Marcusso, Rosa Maria N. [1] ; Van Weyenbergh, Johan [2] ; Luisi de Moura, Joao Victor [1] ; Dahy, Flavia Esper [1] ; Brasil Matos, Aline de Moura [3] ; Haziot, Michel E. J. [1] ; Vidal, Jose E. [3, 1] ; Fonseca, Luiz Augusto M. [3] ; Smid, Jerusa [1] ; Assone, Tatiane [3, 4] ; Casseb, Jorge [3, 4] ; Penalva de Oliveira, Augusto Cesar [1]
Total Authors: 12
Affiliation:
[1] Inst Infect Dis Emilio Ribas IIER Sao Paulo, BR-01246000 Sao Paulo - Brazil
[2] Katholieke Univ Leuven, Rega Inst Med Res, Dept Microbiol Immunol & Transplantat, B-3000 Leuven - Belgium
[3] Inst Trop Med Sao Paulo, BR-05403000 Sao Paulo - Brazil
[4] Univ Sao Paulo, Med Sch, Dept Dermatol, Lab Dermatol & Immunodeficiencies, BR-05403000 Sao Paulo - Brazil
Total Affiliations: 4
Document type: Journal article
Source: PATHOGENS; v. 9, n. 1 JAN 2020.
Web of Science Citations: 0
Abstract

Background: Despite its relatively low incidence of associated diseases, Human T-cell Leukemia Virus-1 (HTLV-1) infection was reported to carry a significant risk of mortality in several endemic areas. HTLV-1-associated diseases, adult T-cell leukemia /lymphoma (ATLL) and HTLV-1-associated myelopathy/tropical spastic paraperesis (HAM/TSP), as well as frequent coinfections with human immunodeficiency virus (HIV), hepatitis C virus (HCV), and Strongyloides stercoralis were associated to increased morbidity and mortality of HTLV-1 infection. Objective: To determine the mortality rate and its associated variables from an open cohort started in July 1997 at the HTLV Clinic, Emilio Ribas Institute (IIER), a major infectious disease hospital in Sao Paulo, Brazil. Methods: Since inception up to September 2018, we admitted 727 HTLV-1-infected individuals, with a rate of 30-50 new admissions per year. All patient data, including clinical and laboratory data, were regularly updated throughout the 21-year period, using a dedicated REDCap database. The Ethical Board of IIER approved the protocol. Results: During 21 years of clinical care to people living with HTLV-1 in the Sao Paulo region, we recruited 479 asymptomatic HTLV-1-infected individuals and 248 HAM/TSP patients, of which 632 remained under active follow-up. During a total of 3800 person-years of follow-up (maximum follow-up 21.5 years, mean follow-up 6.0 years), 27 individuals died (median age of 51.5 years), of which 12 were asymptomatic, one ATLL patient and 14 HAM/TSP patients. HAM/TSP diagnosis (but neither age nor gender) was a significant predictor of increased mortality by univariate and multivariate (hazard ratio (HR) 5.03, 95% CI {[}1.96-12.91], p = 0.001) Cox regression models. Coinfection with HIV/HCV was an independent predictor of increased mortality (HR 15.08; 95% CI {[}5.50-41.32]; p < 0.001), with AIDS-related infections as a more frequent cause of death in asymptomatics (6/13; p = 0.033). HIV/HCV-negative fatal HAM/TSP cases were all female, with urinary tract infection and decubitus ulcer-associated sepsis as the main cause of death (8/14, p = 0.002). Conclusions: All-cause mortality among people living with HTLV-1 in Sao Paulo differs between asymptomatic (2.9%) and HAM/TSP patients (7.3%), independent of age and gender. We observe a dichotomy in fatal cases, with HAM/TSP and HIV/HCV coinfection as independent risk factors for death. Our findings reveal an urgent need for public health actions, as the major causes of death, infections secondary to decubitus ulcers, and immune deficiency syndrome (AIDS)-related infections, can be targeted by preventive measures. (AU)

FAPESP's process: 18/07239-2 - Incidence, risk factors, and pathogenic mechanism of neurocognitive disorders (HAND) among HIV-1-infected subjects
Grantee:Jorge Simao do Rosario Casseb
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 17/08320-5 - Polymorphisms Identification related to HTLV-1 associated myelopathy / tropical spastic paraparesis (HAM / TSP)
Grantee:Jorge Simao do Rosario Casseb
Support Opportunities: Regular Research Grants
FAPESP's process: 16/03025-2 - Identification of polymorphisms related to HTLV-1 associated myelopathy / tropical spastic paraparesis (HAM / TSP)
Grantee:Tatiane Assone Casseb
Support Opportunities: Scholarships in Brazil - Post-Doctoral