Evaluation of the performance of QuantiFERON®-TB Gold plus test in active tuberculosis patients
The aim was to evaluate the sensitivity and the possible factors affecting the sensitivity of the QuantiFERON®-TB Gold Plus (QFT-Plus) assay in culture-positive active TB (Tuberculosis) patients, to investigate the possible causes of negative and indeterminate results in active TB patients, and to c...
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doaj-2a234f88995344fb8fc7d4b251c0f7952021-05-16T04:24:22ZengElsevierJournal of Clinical Tuberculosis and Other Mycobacterial Diseases2405-57942021-05-0123100223Evaluation of the performance of QuantiFERON®-TB Gold plus test in active tuberculosis patientsCengiz Çavuşoğlu0Melike Yaşar-Duman1Mehmet Sezai Taşbakan2Meltem Işıkgöz-Taşbakan3Mehmet Nurullah Orman4Department of Medical Microbiology, University of Ege, Izmir, TurkeyDepartment of Medical Microbiology, University of Ege, Izmir, Turkey; Corresponding author.Department of Chest Diseases, University of Ege, Izmir, TurkeyDepartment of Infectious Diseases and Clinical Microbiology, University of Ege, Izmir, TurkeyDepartment of Biostatistics and Medical Informatics, University of Ege, Izmir, TurkeyThe aim was to evaluate the sensitivity and the possible factors affecting the sensitivity of the QuantiFERON®-TB Gold Plus (QFT-Plus) assay in culture-positive active TB (Tuberculosis) patients, to investigate the possible causes of negative and indeterminate results in active TB patients, and to compare the QFT-Plus results of active TB patients and latent tuberculosis infection (LTBI) cases. The QFT-Plus assay was performed in 46 active TB patients and 64 LTBI. The sensitivity of the test was found as 79.5% in all culture-positive patients, 72.7% in the immunocompromised patients, and 86.4% in the non-immunocompromised patients. Compared to active TB, individuals with LTBI had a lower T-cell response and lower IFN-ɣ concentrations. It was determined that the immunocompromisation reduced the sensitivity of the test and the secreted IFN-ɣ concentrations and increased the indeterminate results in patients with active TB. There was no difference in secreted IFN-ɣ concentrations between M. tuberculosis clones, but higher IFN-ɣ concentrations in patients infected with M. tuberculosis strains compared to patients infected with zoonotic strains. Compared with active TB, response to “only to TB2” was significantly higher in LTBI. In conclusion, it was concluded that TB2 tube increased sensitivity in LTBI but may not contribute to sensitivity in active TB.http://www.sciencedirect.com/science/article/pii/S2405579421000127QuantiFERON TB Gold PlusActive TBSpoligotypingLTBI |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Cengiz Çavuşoğlu Melike Yaşar-Duman Mehmet Sezai Taşbakan Meltem Işıkgöz-Taşbakan Mehmet Nurullah Orman |
spellingShingle |
Cengiz Çavuşoğlu Melike Yaşar-Duman Mehmet Sezai Taşbakan Meltem Işıkgöz-Taşbakan Mehmet Nurullah Orman Evaluation of the performance of QuantiFERON®-TB Gold plus test in active tuberculosis patients Journal of Clinical Tuberculosis and Other Mycobacterial Diseases QuantiFERON TB Gold Plus Active TB Spoligotyping LTBI |
author_facet |
Cengiz Çavuşoğlu Melike Yaşar-Duman Mehmet Sezai Taşbakan Meltem Işıkgöz-Taşbakan Mehmet Nurullah Orman |
author_sort |
Cengiz Çavuşoğlu |
title |
Evaluation of the performance of QuantiFERON®-TB Gold plus test in active tuberculosis patients |
title_short |
Evaluation of the performance of QuantiFERON®-TB Gold plus test in active tuberculosis patients |
title_full |
Evaluation of the performance of QuantiFERON®-TB Gold plus test in active tuberculosis patients |
title_fullStr |
Evaluation of the performance of QuantiFERON®-TB Gold plus test in active tuberculosis patients |
title_full_unstemmed |
Evaluation of the performance of QuantiFERON®-TB Gold plus test in active tuberculosis patients |
title_sort |
evaluation of the performance of quantiferon®-tb gold plus test in active tuberculosis patients |
publisher |
Elsevier |
series |
Journal of Clinical Tuberculosis and Other Mycobacterial Diseases |
issn |
2405-5794 |
publishDate |
2021-05-01 |
description |
The aim was to evaluate the sensitivity and the possible factors affecting the sensitivity of the QuantiFERON®-TB Gold Plus (QFT-Plus) assay in culture-positive active TB (Tuberculosis) patients, to investigate the possible causes of negative and indeterminate results in active TB patients, and to compare the QFT-Plus results of active TB patients and latent tuberculosis infection (LTBI) cases. The QFT-Plus assay was performed in 46 active TB patients and 64 LTBI. The sensitivity of the test was found as 79.5% in all culture-positive patients, 72.7% in the immunocompromised patients, and 86.4% in the non-immunocompromised patients. Compared to active TB, individuals with LTBI had a lower T-cell response and lower IFN-ɣ concentrations. It was determined that the immunocompromisation reduced the sensitivity of the test and the secreted IFN-ɣ concentrations and increased the indeterminate results in patients with active TB. There was no difference in secreted IFN-ɣ concentrations between M. tuberculosis clones, but higher IFN-ɣ concentrations in patients infected with M. tuberculosis strains compared to patients infected with zoonotic strains. Compared with active TB, response to “only to TB2” was significantly higher in LTBI. In conclusion, it was concluded that TB2 tube increased sensitivity in LTBI but may not contribute to sensitivity in active TB. |
topic |
QuantiFERON TB Gold Plus Active TB Spoligotyping LTBI |
url |
http://www.sciencedirect.com/science/article/pii/S2405579421000127 |
work_keys_str_mv |
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