Risk assessment of tuberculosis in immunocompromised patients: A TBNET study

Martina Sester, Frank Van Leth, Judith Bruchfeld, Dragos Bumbacea, Daniela M. Cirillo, Asli Gorek Dilektasli, José Domínguez, Raquel Duarte, Martin Ernst, Fusun Oner Eyuboglu, Irini Gerogianni, Enrico Girardi, Delia Goletti, Jean Paul Janssens, Inger Julander, Berit Lange, Irene Latorre, Monica Losi, Roumiana Markova, Alberto MatteelliHeather Milburn, Pernille Ravn, Theresia Scholman, Paola M. Soccal, Marina Straub, Dirk Wagner, Timo Wolf, Aslihan Yalcin, Christoph Lange, TBNET

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Copyright © 2014 by the American Thoracic Society. Rationale: In the absence of active tuberculosis, a positive tuberculin skin test (TST) or interferon-γ release assay (IGRA) result defines latent infection with Mycobacterium tuberculosis, although test results may vary depending on immunodeficiency. Objectives: This study compared the performance of TST and IGRAs in five different groups of immunocompromised patients, and evaluated their ability to identify those at risk for development of tuberculosis. Methods: Immunocompromised patients with HIV infection, chronic renal failure, rheumatoid arthritis, solid-organ or stem-cell transplantation, and healthy control subjects were evaluated head-to-head by the TST, QuantiFERON-TB-Gold in-tube test (ELISA), and T-SPOT.TB test (enzyme-linked immunospot) at 17 centers in 11 European countries. Development of tuberculosis was assessed during follow-up. Measurements and Main Results: Frequencies of positive test results varied from 8.7 to 15.9% in HIV infection (n = 768), 25.3 to 30.6% in chronic renal failure (n = 270), 25.0% to 37.2% in rheumatoid arthritis (n = 199), 9.0 to 20.0% in solid-organ transplant recipients (n = 197), 0% to 5.8% in stem-cell transplant recipients (n = 103), and 11.2 to 15.2% in immunocompetent control subjects (n = 211). Eleven patients (10 with HIV infection and one solid-organ transplant recipient) developed tuberculosis during a median follow-up of 1.8 (interquartile range, 0.2-3.0) years. Six of the 11 patients had a negative or indeterminate test result in all three tests at the time of screening. Tuberculosis incidence was generally low, but higher in HIV-infected individuals with a positive TST (3.25 cases per 100 person-years) than with a positive ELISA (1.31 cases per 100 person-years) or enzyme-linked immunospot result (1.78 cases per 100 person-years). No cases of tuberculosis occurred in patients who received preventive chemotherapy. Conclusions: Among immunocompromised patients evaluated in this study, progression toward tuberculosis was highest in HIV-infected individuals and was poorly predicted by TST or IGRAs. Clinical trial registered with www.clinicaltrials.gov (NCT 00707317).
Idioma originalAnglès
Pàgines (de-a)1168-1176
RevistaAmerican Journal of Respiratory and Critical Care Medicine
Volum190
Número10
DOIs
Estat de la publicacióPublicada - 1 de gen. 2014

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