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Lu P, Lian Y, Li Z, Wu K, Xu Z, Xue H, Li J, Zhang X, Wang R, Ding X, Pan J, Ding H, Liu Q, Zhu L, Yang H. Effect of CD4 count on Mycobacterium tuberculosis infection rates in people living with HIV: a comparative study in prison and community. Sci Rep 2024; 14:26386. [PMID: 39488608 PMCID: PMC11531519 DOI: 10.1038/s41598-024-77250-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2024] [Accepted: 10/21/2024] [Indexed: 11/04/2024] Open
Abstract
To evaluate the impact of the CD4 count on ESAT6-CFP10 (EC) skin test, QuantiFERON-TB Gold In-tube test (QFT) and tuberculin skin test (TST) in a large prison and communities in Jiangsu Province among people living with HIV (PLHIV). Participants in communities were tested with the QFT and EC skin test and in prison were tested with the QFT, TST and EC skin test. A 4-knotted restricted cubic spline fitted for Logistic models was used to explore the cutoff point of CD4 count and the associations between changes in CD4 count and Mycobacterium tuberculosis (M.tb) infection. Among 1,815 PLHIV included, 19.3% (350) were from prisons and 80.7% (1465) were identified through community screenings. M.tb infection rates were 12.2% and 8.3% through QFT and EC tests, respectively. Odd Ratios (ORs) for infection increased with CD4 counts, peaking at 618 cells/mm3 for EC, 392 cells/mm3 for QFT, then plateaued. However, the pattern differed for EC between prison and screening scenarios. In prison settings, M.tb infection increased with CD4 count from 0 to 350 cells/mm3, plateaued until 500 cells/mm3, and then persistently increased. Conversely, for community, ORs decreased until 300 cells/mm3, followed by an increase between 300 and 729 cells/mm3, after which they continued to rise persistently. Our cross-sectional study among PLHIV revealed a higher rate of M.tb infection in prison compared to the community. The relationship between CD4 count and infection became negative after a certain threshold. This pivotal point differed with detection methods, with QFT showing lower CD4 thresholds than EC.
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Affiliation(s)
- Peng Lu
- Department of Chronic Communicable Disease, Jiangsu Provincial Center for Disease Control and Prevention, 172 Jiangsu Rd, Nanjing, 210009, Jiangsu Province, People's Republic of China
- School of Public Health, Nanjing Medical University, Nanjing, Jiangsu Province, People's Republic of China
| | - Yilin Lian
- School of Public Health, Southeast University, Nanjing, Jiangsu Province, People's Republic of China
| | - Zhongqi Li
- Department of Chronic Communicable Disease, Jiangsu Provincial Center for Disease Control and Prevention, 172 Jiangsu Rd, Nanjing, 210009, Jiangsu Province, People's Republic of China
| | - Kai Wu
- Central Hospital, Jiangsu Prison Administration, Changzhou, Jiangsu Province, People's Republic of China
| | - Zhuping Xu
- Department of Chronic Communicable Disease, Wuxi City Center for Disease Control and Prevention, Wuxi, Jiangsu Province, People's Republic of China
| | - Hao Xue
- Department of Chronic Communicable Disease, Yancheng City Center for Disease Control and Prevention, Yancheng, Jiangsu Province, People's Republic of China
| | - Jincheng Li
- Department of Chronic Communicable Disease, Yangzhou City Center for Disease Control and Prevention, Yangzhou, Jiangsu Province, People's Republic of China
| | - Xing Zhang
- Department of Chronic Communicable Disease, Changzhou City Center for Disease Control and Prevention, Changzhou, Jiangsu Province, People's Republic of China
| | - Rong Wang
- Department of Chronic Communicable Disease, Nanjing City Center for Disease Control and Prevention, Nanjing, Jiangsu Province, People's Republic of China
| | - Xiaoyan Ding
- Department of Chronic Communicable Disease, Jiangsu Provincial Center for Disease Control and Prevention, 172 Jiangsu Rd, Nanjing, 210009, Jiangsu Province, People's Republic of China
| | - Jingjing Pan
- Department of Chronic Communicable Disease, Jiangsu Provincial Center for Disease Control and Prevention, 172 Jiangsu Rd, Nanjing, 210009, Jiangsu Province, People's Republic of China
| | - Hui Ding
- Department of Chronic Communicable Disease, Jiangsu Provincial Center for Disease Control and Prevention, 172 Jiangsu Rd, Nanjing, 210009, Jiangsu Province, People's Republic of China
| | - Qiao Liu
- Department of Chronic Communicable Disease, Jiangsu Provincial Center for Disease Control and Prevention, 172 Jiangsu Rd, Nanjing, 210009, Jiangsu Province, People's Republic of China.
| | - Limei Zhu
- Department of Chronic Communicable Disease, Jiangsu Provincial Center for Disease Control and Prevention, 172 Jiangsu Rd, Nanjing, 210009, Jiangsu Province, People's Republic of China.
| | - Haitao Yang
- Department of Chronic Communicable Disease, Jiangsu Provincial Center for Disease Control and Prevention, 172 Jiangsu Rd, Nanjing, 210009, Jiangsu Province, People's Republic of China
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Tian W, Han Z, Shi D, Wang H, Tang H, Wu Z, Zhang Y, Cui L, Shen N, Zheng J, Chen Y. Indeterminate Result of Interferon-γ Release Assay-A Risk Factor of Mortality for COVID-19 and Non-COVID-19 Respiratory Infections. J Med Virol 2024; 96:e70058. [PMID: 39588785 PMCID: PMC11590174 DOI: 10.1002/jmv.70058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 09/28/2024] [Accepted: 10/29/2024] [Indexed: 11/27/2024]
Abstract
Toward the end of 2022, the cessation of China's "dynamic zero-COVID policy" had led to a notable outbreak of SARS-CoV-2 infections and a substantial number of severe cases and deaths were reported, which raised serious concerns. Concurrently, our study identified a significant increase in the incidence of indeterminate results from the Interferon-γ Release Assay (IGRA) among hospitalized patients during this period. Peripheral T cells from these individuals were unable to produce measurable levels of IFN-γ upon stimulation with the PHA mitogen. This indeterminate IGRA results emerged as a potential risk factor for increased mortality among severely affected elderly COVID-19 patients, contributing to an understanding of the observed excess mortality. The deep serum proteomic analysis elucidated a dysfunctional immune response and defect in cardiac function of those patients. A predictive panel including IGRA results significantly enhanced the accuracy of predicting mortality outcomes in COVID-19 cases (AUC = 0.9762). We also extended the relevance of indeterminate IGRA outcomes as a risk factor for mortality to elderly non-COVID-19 respiratory infections, providing valuable prognostic insights into this type of disease and informing targeted and effective therapeutic interventions for similar outbreaks in the future.
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Affiliation(s)
- Wenmin Tian
- Center for Precision Medicine Multi‐Omics Research, Institute of Advanced Clinical MedicinePeking UniversityBeijingChina
| | - Zhongyu Han
- Department of Laboratory MedicinePeking University Third HospitalBeijingChina
| | - Dongxue Shi
- Center for Precision Medicine Multi‐Omics Research, Institute of Advanced Clinical MedicinePeking UniversityBeijingChina
| | - Hongli Wang
- Center for Precision Medicine Multi‐Omics Research, Institute of Advanced Clinical MedicinePeking UniversityBeijingChina
| | - Haohao Tang
- Center for Precision Medicine Multi‐Omics Research, Institute of Advanced Clinical MedicinePeking UniversityBeijingChina
| | - Zhenchao Wu
- Department of Pulmonary and Critical Care MedicinePeking University Third HospitalBeijingChina
- Center for Infectious DiseasesPeking University Third HospitalBeijingChina
| | - Yinmei Zhang
- Department of Laboratory MedicinePeking University Third HospitalBeijingChina
| | - Liyan Cui
- Department of Laboratory MedicinePeking University Third HospitalBeijingChina
- Center for Infectious DiseasesPeking University Third HospitalBeijingChina
| | - Ning Shen
- Department of Pulmonary and Critical Care MedicinePeking University Third HospitalBeijingChina
- Center for Infectious DiseasesPeking University Third HospitalBeijingChina
| | - Jiajia Zheng
- Department of Laboratory MedicinePeking University Third HospitalBeijingChina
- Center for Infectious DiseasesPeking University Third HospitalBeijingChina
| | - Yang Chen
- Center for Precision Medicine Multi‐Omics Research, Institute of Advanced Clinical MedicinePeking UniversityBeijingChina
- Department of Biochemistry and BiophysicsSchool of Basic Medical Sciences, Peking University Health Science CenterBeijingChina
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Lu P, Wu K, Zhou H, Yu H, Yuan J, Dong L, Liu Q, Ding X, Lu W, Yang H, Zhu L, Martinez L. Evaluation of ESAT6-CFP10 Skin Test for Mycobacterium tuberculosis Infection among Persons Living with HIV in China. J Clin Microbiol 2023; 61:e0181622. [PMID: 36946732 PMCID: PMC10117090 DOI: 10.1128/jcm.01816-22] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023] Open
Abstract
Recent global guidelines recommend Mycobacterium tuberculosis antigen-based skin tests, such as the ESAT6-CFP10 (EC) skin test, as acceptable alternatives to the tuberculin skin test (TST) and the QuantiFERON-TB Gold In-Tube test (QFT). However, the diagnostic value of these tests among persons living with HIV (PLHIV) is unknown. We aimed to assess the diagnostic accuracy of the EC among a cohort of PLHIV in China. We recruited PLHIV in Jiangsu Province, China, to assess sensitivity and specificity of the EC test. Participants were tested with the QFT, TST, and EC skin test. Results were stratified by age, M. tuberculosis BCG vaccination, and CD4 count. The sensitivity and specificity of the EC skin test was assessed using distinct cutoffs of the QFT and TST. Of 350 PLHIV enrolled in the study, 58 (16.6%), 89 (25.4%), and 59 (16.9%) tested positive with the EC test, the QFT, and the TST, respectively. Positivity increased with CD4 count; however, these trends were similar across tests. At a 5-mm cutoff, EC skin test specificity was high (99.6%, 95% confidence interval [CI] 95% CI = 97.7 to 100.0); however, sensitivity was moderate (81.4%; 95% CI = 66.6 to 91.6). After stratifying by BCG, the sensitivity and specificity were 86.4% (95% CI = 65.1 to 97.1) and 99.1% (95% CI = 95.0 to 100.0) among vaccinated PLHIV and 76.2% (95% CI = 52.8 to 91.8) and 100.0% (95% CI = 97.2 to 100.0) among unvaccinated PLHIV, respectively. Among PLHIV, the diagnostic value of the EC skin test remained high, regardless of BCG vaccination or CD4 count. The EC skin test performed comparably to TST and may be a valid alternative diagnostic test to use in settings or populations with high HIV prevalence and BCG vaccination. To our knowledge, this is the first study to evaluate the novel ESAT6-CFP10 skin test among PLHIV. Among 350 PLHIV, the test displayed high specificity and sensitivity, a finding which did not markedly differ based on BCG vaccination and CD4 count.
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Affiliation(s)
- Peng Lu
- Department of Chronic Communicable Disease, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, Jiangsu, People's Republic of China
| | - Kai Wu
- Central Hospital, Jiangsu Prison Administration, Changzhou, Jiangsu, People's Republic of China
| | - Hongxi Zhou
- Central Hospital, Jiangsu Prison Administration, Changzhou, Jiangsu, People's Republic of China
| | - Haibing Yu
- Central Hospital, Jiangsu Prison Administration, Changzhou, Jiangsu, People's Republic of China
| | - Ju Yuan
- Central Hospital, Jiangsu Prison Administration, Changzhou, Jiangsu, People's Republic of China
| | - Lang Dong
- Central Hospital, Jiangsu Prison Administration, Changzhou, Jiangsu, People's Republic of China
| | - Qiao Liu
- Department of Chronic Communicable Disease, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, Jiangsu, People's Republic of China
| | - Xiaoyan Ding
- Department of Chronic Communicable Disease, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, Jiangsu, People's Republic of China
| | - Wei Lu
- Department of Chronic Communicable Disease, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, Jiangsu, People's Republic of China
| | - Haitao Yang
- Jiangsu Provincial Health Development Research Center, Nanjing, Jiangsu, People's Republic of China
| | - Limei Zhu
- Department of Chronic Communicable Disease, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, Jiangsu, People's Republic of China
| | - Leonardo Martinez
- Department of Epidemiology, School of Public Health, Boston University, Boston, Massachusetts, USA
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Imeneo A, Alessio G, Di Lorenzo A, Campogiani L, Lodi A, Barreca F, Zordan M, Barchi V, Massa B, Tedde S, Crea A, Vitale P, Spalliera I, Compagno M, Coppola L, Dori L, Malagnino V, Teti E, Andreoni M, Sarmati L, Iannetta M. In Patients with Severe COVID-19, the Profound Decrease in the Peripheral Blood T-Cell Subsets Is Correlated with an Increase of QuantiFERON-TB Gold Plus Indeterminate Rates and Reflecting a Reduced Interferon-Gamma Production. Life (Basel) 2022; 12:life12020244. [PMID: 35207531 PMCID: PMC8880410 DOI: 10.3390/life12020244] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 02/03/2022] [Accepted: 02/05/2022] [Indexed: 12/15/2022] Open
Abstract
Increased rates of indeterminate QuantiFERON-TB Gold Plus Assay (QFT-Plus) were demonstrated in patients hospitalized with Coronavirus Disease (COVID)-19. We aimed to define the prevalence and characteristics of hospitalized COVID-19 patients with indeterminate QFT-Plus. A retrospective study was performed including hospitalized COVID-19 patients, stratified in survivors and non-survivors, non-severe and severe according to the maximal oxygen supply required. Statistical analysis was performed using JASP ver0.14.1 and GraphPad Prism ver8.2.1. A total of 420 patients were included, median age: 65 years, males: 66.4%. The QFT-Plus was indeterminate in 22.1% of patients. Increased rate of indeterminate QFT-Plus was found in non-survivors (p = 0.013) and in severe COVID-19 patients (p < 0.001). Considering the Mitogen-Nil condition of the QFT-Plus, an impaired production of interferon-gamma (IFN-γ) was found in non-survivors (p < 0.001) and in severe COVID-19 patients (p < 0.001). A positive correlation between IFN-γ levels in the Mitogen-Nil condition and the absolute counts of CD3+ (p < 0.001), CD4+ (p < 0.001), and CD8+ (p < 0.001) T-lymphocytes was found. At the multivariable analysis, CD3+ T-cell absolute counts and CD4/CD8 ratio were confirmed as independent predictors of indeterminate results at the QFT-Plus. Our study confirmed the increased rate of indeterminate QFT-Plus in COVID-19 patients, mainly depending on the peripheral blood T-lymphocyte depletion found in the most severe cases.
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Affiliation(s)
- Alessandra Imeneo
- Department of System Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy; (A.I.); (G.A.); (A.D.L.); (A.L.); (F.B.); (M.Z.); (V.B.); (B.M.); (S.T.); (A.C.); (V.M.); (M.A.); (L.S.)
| | - Grazia Alessio
- Department of System Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy; (A.I.); (G.A.); (A.D.L.); (A.L.); (F.B.); (M.Z.); (V.B.); (B.M.); (S.T.); (A.C.); (V.M.); (M.A.); (L.S.)
| | - Andrea Di Lorenzo
- Department of System Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy; (A.I.); (G.A.); (A.D.L.); (A.L.); (F.B.); (M.Z.); (V.B.); (B.M.); (S.T.); (A.C.); (V.M.); (M.A.); (L.S.)
| | - Laura Campogiani
- Infectious Disease Clinic, Policlinico Tor Vergata, Viale Oxford 81, 00133 Rome, Italy; (L.C.); (P.V.); (I.S.); (M.C.); (L.C.); (L.D.); (E.T.)
| | - Alessandra Lodi
- Department of System Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy; (A.I.); (G.A.); (A.D.L.); (A.L.); (F.B.); (M.Z.); (V.B.); (B.M.); (S.T.); (A.C.); (V.M.); (M.A.); (L.S.)
| | - Filippo Barreca
- Department of System Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy; (A.I.); (G.A.); (A.D.L.); (A.L.); (F.B.); (M.Z.); (V.B.); (B.M.); (S.T.); (A.C.); (V.M.); (M.A.); (L.S.)
| | - Marta Zordan
- Department of System Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy; (A.I.); (G.A.); (A.D.L.); (A.L.); (F.B.); (M.Z.); (V.B.); (B.M.); (S.T.); (A.C.); (V.M.); (M.A.); (L.S.)
| | - Virginia Barchi
- Department of System Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy; (A.I.); (G.A.); (A.D.L.); (A.L.); (F.B.); (M.Z.); (V.B.); (B.M.); (S.T.); (A.C.); (V.M.); (M.A.); (L.S.)
| | - Barbara Massa
- Department of System Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy; (A.I.); (G.A.); (A.D.L.); (A.L.); (F.B.); (M.Z.); (V.B.); (B.M.); (S.T.); (A.C.); (V.M.); (M.A.); (L.S.)
| | - Simona Tedde
- Department of System Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy; (A.I.); (G.A.); (A.D.L.); (A.L.); (F.B.); (M.Z.); (V.B.); (B.M.); (S.T.); (A.C.); (V.M.); (M.A.); (L.S.)
| | - Angela Crea
- Department of System Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy; (A.I.); (G.A.); (A.D.L.); (A.L.); (F.B.); (M.Z.); (V.B.); (B.M.); (S.T.); (A.C.); (V.M.); (M.A.); (L.S.)
| | - Pietro Vitale
- Infectious Disease Clinic, Policlinico Tor Vergata, Viale Oxford 81, 00133 Rome, Italy; (L.C.); (P.V.); (I.S.); (M.C.); (L.C.); (L.D.); (E.T.)
| | - Ilaria Spalliera
- Infectious Disease Clinic, Policlinico Tor Vergata, Viale Oxford 81, 00133 Rome, Italy; (L.C.); (P.V.); (I.S.); (M.C.); (L.C.); (L.D.); (E.T.)
| | - Mirko Compagno
- Infectious Disease Clinic, Policlinico Tor Vergata, Viale Oxford 81, 00133 Rome, Italy; (L.C.); (P.V.); (I.S.); (M.C.); (L.C.); (L.D.); (E.T.)
| | - Luigi Coppola
- Infectious Disease Clinic, Policlinico Tor Vergata, Viale Oxford 81, 00133 Rome, Italy; (L.C.); (P.V.); (I.S.); (M.C.); (L.C.); (L.D.); (E.T.)
| | - Luca Dori
- Infectious Disease Clinic, Policlinico Tor Vergata, Viale Oxford 81, 00133 Rome, Italy; (L.C.); (P.V.); (I.S.); (M.C.); (L.C.); (L.D.); (E.T.)
| | - Vincenzo Malagnino
- Department of System Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy; (A.I.); (G.A.); (A.D.L.); (A.L.); (F.B.); (M.Z.); (V.B.); (B.M.); (S.T.); (A.C.); (V.M.); (M.A.); (L.S.)
- Infectious Disease Clinic, Policlinico Tor Vergata, Viale Oxford 81, 00133 Rome, Italy; (L.C.); (P.V.); (I.S.); (M.C.); (L.C.); (L.D.); (E.T.)
| | - Elisabetta Teti
- Infectious Disease Clinic, Policlinico Tor Vergata, Viale Oxford 81, 00133 Rome, Italy; (L.C.); (P.V.); (I.S.); (M.C.); (L.C.); (L.D.); (E.T.)
| | - Massimo Andreoni
- Department of System Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy; (A.I.); (G.A.); (A.D.L.); (A.L.); (F.B.); (M.Z.); (V.B.); (B.M.); (S.T.); (A.C.); (V.M.); (M.A.); (L.S.)
- Infectious Disease Clinic, Policlinico Tor Vergata, Viale Oxford 81, 00133 Rome, Italy; (L.C.); (P.V.); (I.S.); (M.C.); (L.C.); (L.D.); (E.T.)
| | - Loredana Sarmati
- Department of System Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy; (A.I.); (G.A.); (A.D.L.); (A.L.); (F.B.); (M.Z.); (V.B.); (B.M.); (S.T.); (A.C.); (V.M.); (M.A.); (L.S.)
- Infectious Disease Clinic, Policlinico Tor Vergata, Viale Oxford 81, 00133 Rome, Italy; (L.C.); (P.V.); (I.S.); (M.C.); (L.C.); (L.D.); (E.T.)
| | - Marco Iannetta
- Department of System Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy; (A.I.); (G.A.); (A.D.L.); (A.L.); (F.B.); (M.Z.); (V.B.); (B.M.); (S.T.); (A.C.); (V.M.); (M.A.); (L.S.)
- Infectious Disease Clinic, Policlinico Tor Vergata, Viale Oxford 81, 00133 Rome, Italy; (L.C.); (P.V.); (I.S.); (M.C.); (L.C.); (L.D.); (E.T.)
- Correspondence:
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Dumitrescu F, Pisoschi CG, Pădureanu V, Stoian AC, Dragonu L, Giubelan L. The Role of QuantiFERON-TB Gold Plus in Mycobacterium Tuberculosis Detection in a Severe HIV Immunocompromised Patient-Case Report. Pathogens 2021; 10:1523. [PMID: 34832677 PMCID: PMC8620343 DOI: 10.3390/pathogens10111523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 11/19/2021] [Accepted: 11/20/2021] [Indexed: 11/17/2022] Open
Abstract
Tuberculosis (TB) is an important opportunistic infection in HIV-positive people. We are reporting a case of a 31-year-old HIV-infected patient who was hospitalized in July 2021 for dyspnea, cough with mucopurulent sputum and asthenia. He was confirmed to have Serratia liquefaciens pneumonia and acute respiratory failure. The evolution was unfavorable despite the antibiotic, pathogenic and symptomatic treatment. Because the patient had severe immunosuppression (CD4 count = 37 cell/mm3), we used QuantiFERON-TB Gold Plus for the detection of the Mycobacterium tuberculosis infection. The antituberculosis therapy was initiated, which resulted in a significant improvement of the general condition and the patient was discharged with the recommendation to continue antiretroviral therapy, antituberculosis treatment and Trimethoprim/Sulfamethoxazole-single tablet daily for the prophylaxis of Pneumocystis pneumonia.
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Affiliation(s)
- Florentina Dumitrescu
- Department of Infectious Disease, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (F.D.); (A.C.S.); (L.D.); (L.G.)
| | - Cătălina-Gabriela Pisoschi
- Department of Pharmaceutical Biochemistry, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania;
| | - Vlad Pădureanu
- Department of Internal Medicine, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Andreea Cristina Stoian
- Department of Infectious Disease, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (F.D.); (A.C.S.); (L.D.); (L.G.)
| | - Livia Dragonu
- Department of Infectious Disease, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (F.D.); (A.C.S.); (L.D.); (L.G.)
| | - Lucian Giubelan
- Department of Infectious Disease, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (F.D.); (A.C.S.); (L.D.); (L.G.)
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Solanich X, Fernández-Huerta M, Basaez C, Antolí A, Rocamora-Blanch G, Corbella X, Santin M, Alcaide F. Clinical Significance of Indeterminate QuantiFERON-TB Gold Plus Assay Results in Hospitalized COVID-19 Patients with Severe Hyperinflammatory Syndrome. J Clin Med 2021; 10:jcm10050918. [PMID: 33652893 PMCID: PMC7956705 DOI: 10.3390/jcm10050918] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 02/18/2021] [Accepted: 02/23/2021] [Indexed: 12/13/2022] Open
Abstract
Performance of the QuantiFERON-TB Gold Plus (QFT-Plus) assay could be affected by conditions of immune dysregulation. Little is known about the reliability of QTF-Plus in COVID-19 patients. Our aim was to determine the prevalence and the factors related to an indeterminate QFT-Plus test in COVID-19 hospitalized patients, and to analyze its relationship with in-hospital mortality. A retrospective analysis of all hospitalized COVID-19 patients on whom a QTF-Plus assay was performed in a tertiary care public hospital during the first epidemic wave in Spain (March-April 2020). Out of a total of 96 patients included, 34 (35.4%) had an indeterminate result, in all cases due to a lack of response in the mitogen control. Factors related to COVID-19 severity, such as higher lactate dehydrogenase (LDH) (odds ratio [OR] 1.005 [95% confidence interval [CI] 1.002-1.008]) and previous administration of corticosteroids (OR 4.477 [95% CI 1.397-14.345]), were independent predictors for indeterminate QFT-Plus assay. Furthermore, indeterminate results were more frequent among COVID-19 patients who died during hospitalization (29.1% vs. 64.7%; p = 0.005). We conclude that QFT-Plus assay yielded an unexpected, high prevalence of indeterminate results in severe COVID-19 patients. Factors related to worse COVID-19 outcome, such as LDH, as well as corticosteroid use before the QFT-Plus assay, seem to be predictors for an indeterminate result. The role of an indeterminate QFT-Plus result in predicting COVID-19 severity and mortality should be evaluated.
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Affiliation(s)
- Xavier Solanich
- Department of Internal Medicine, Bellvitge University Hospital, 08907 L’Hospitalet de Llobregat, Barcelona, Spain; (A.A.); (G.R.-B.); (X.C.)
- Bellvitge Biomedical Research Institute (IDIBELL), 08907 L’Hospitalet de Llobregat, Barcelona, Spain; (M.F.-H.); (M.S.); (F.A.)
- Correspondence:
| | - Miguel Fernández-Huerta
- Bellvitge Biomedical Research Institute (IDIBELL), 08907 L’Hospitalet de Llobregat, Barcelona, Spain; (M.F.-H.); (M.S.); (F.A.)
- Department of Microbiology, Bellvitge University Hospital, 08907 L’Hospitalet de Llobregat, Barcelona, Spain
| | - Celeste Basaez
- Biochemistry Department, Hospital Interzonal General de Agudos Evita de Lanús, 1826 Lanús, Argentina;
| | - Arnau Antolí
- Department of Internal Medicine, Bellvitge University Hospital, 08907 L’Hospitalet de Llobregat, Barcelona, Spain; (A.A.); (G.R.-B.); (X.C.)
- Bellvitge Biomedical Research Institute (IDIBELL), 08907 L’Hospitalet de Llobregat, Barcelona, Spain; (M.F.-H.); (M.S.); (F.A.)
| | - Gemma Rocamora-Blanch
- Department of Internal Medicine, Bellvitge University Hospital, 08907 L’Hospitalet de Llobregat, Barcelona, Spain; (A.A.); (G.R.-B.); (X.C.)
- Bellvitge Biomedical Research Institute (IDIBELL), 08907 L’Hospitalet de Llobregat, Barcelona, Spain; (M.F.-H.); (M.S.); (F.A.)
| | - Xavier Corbella
- Department of Internal Medicine, Bellvitge University Hospital, 08907 L’Hospitalet de Llobregat, Barcelona, Spain; (A.A.); (G.R.-B.); (X.C.)
- Bellvitge Biomedical Research Institute (IDIBELL), 08907 L’Hospitalet de Llobregat, Barcelona, Spain; (M.F.-H.); (M.S.); (F.A.)
- School of Medicine, Universitat Internacional de Catalunya, 08017 Barcelona, Spain
| | - Miguel Santin
- Bellvitge Biomedical Research Institute (IDIBELL), 08907 L’Hospitalet de Llobregat, Barcelona, Spain; (M.F.-H.); (M.S.); (F.A.)
- Department of Infectious Diseases, Bellvitge University Hospital, 08907 L’Hospitalet de Llobregat, Barcelona, Spain
- Department of Infectious Diseases, University of Barcelona, 08907 L’Hospitalet de Llobregat, Barcelona, Spain
| | - Fernando Alcaide
- Bellvitge Biomedical Research Institute (IDIBELL), 08907 L’Hospitalet de Llobregat, Barcelona, Spain; (M.F.-H.); (M.S.); (F.A.)
- Department of Microbiology, Bellvitge University Hospital, 08907 L’Hospitalet de Llobregat, Barcelona, Spain
- Department of Infectious Diseases, University of Barcelona, 08907 L’Hospitalet de Llobregat, Barcelona, Spain
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7
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Chaisson LH, Saraceni V, Cohn S, Seabrook D, Cavalcante SC, Chaisson RE, Golub JE, Durovni B. CD4+ cell count stratification to guide tuberculosis preventive therapy for people living with HIV. AIDS 2020; 34:139-147. [PMID: 31634189 PMCID: PMC7112158 DOI: 10.1097/qad.0000000000002398] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
OBJECTIVES In 2018, Brazilian guidelines changed to recommend tuberculosis (TB) preventive therapy for all people with HIV and a CD4 cell count 350 cells/μl or less, but only for those with a positive tuberculin skin test (TST) if CD4 cell count is than 350 cells/μl. We determined the potential effectiveness of CD4-based guidelines for TB testing and preventive therapy. DESIGN Secondary analysis of the stepped-wedge, cluster-randomized THRio trial for isoniazid preventive therapy (IPT). METHODS We analyzed data from 4114 newly registered patients with HIV in 29 clinics followed until TB diagnosis, death, or administrative censoring. We compared incidence rates of TB and TB/death between CD4, TST, IPT, and antiretroviral therapy categories. RESULTS Initial CD4 cell count was 350 cells/μl or less in 2138 (52%) and more than 350 cells/μl in 1976 (48%) patients. TST was performed for 2922 (71%), of whom 657 (16%) were TST-positive [278 (13%) CD4 ≤ 350 vs. 379 (19%) CD4 > 350]. A total of 619 (15%) received IPT and 2806 (68%) received antiretroviral therapy. For patients with CD4 cell count 350 cells/μl or less who did not receive IPT, the incidence rate of TB was 1.79/100 person-years (pys) and TB/death was 3.89/100 pys. For patients with CD4 cell count more than 350 who did not receive IPT, the incidence rates of TB and TB/death were 0.57/100 and 1.49/100 pys for TST-negatives, and 1.05/100 and 1.64/100 pys for TST-unknowns. CONCLUSION TB incidence was high among all patients who did not receive IPT, including those with CD4 cell count more than 350 cells/μl and negative or unknown TST results. TB preventive therapy should be provided to all people living with HIV in medium burden settings, regardless of CD4 cell count and TST status.
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Affiliation(s)
- Lelia H Chaisson
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA Municipal Health Secretariat, Rio de Janeiro, Brazil Department of Medicine, Center for Tuberculosis Research, Johns Hopkins University School of Medicine, Baltimore, Maryland Linksbridge SPC, Seattle, Washington, USA Instituto Nacional de Infectologia Evandro Chagas Centro de Estudos Estratégicos, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
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8
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Overton K, Varma R, Post JJ. Comparison of Interferon-γ Release Assays and the Tuberculin Skin Test for Diagnosis of Tuberculosis in Human Immunodeficiency Virus: A Systematic Review. Tuberc Respir Dis (Seoul) 2017; 81:59-72. [PMID: 29256218 PMCID: PMC5771747 DOI: 10.4046/trd.2017.0072] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 09/06/2017] [Accepted: 09/07/2017] [Indexed: 11/24/2022] Open
Abstract
Background It remains uncertain if interferon-γ release assays (IGRAs) are superior to the tuberculin skin test (TST) for the diagnosis of active tuberculosis (TB) or latent tuberculosis infection (LTBI) in immunosuppressed populations including people with human immunodeficiency virus (HIV) infection. The purpose of this study was to systematically review the performance of IGRAs and the TST in people with HIV with active TB or LTBI in low and high prevalence TB countries. Methods We searched the MEDLINE database from 1966 through to January 2017 for studies that compared results of the TST with either the commercial QuantiFERON-TB Gold in Tube (QFTGT) assay or previous assay versions, the T-SPOT.TB assay or in-house IGRAs. Data were summarized by TB prevalence. Tests for concordance and differences in proportions were undertaken as appropriate. The variation in study methodology was appraised. Results Thirty-two studies including 4,856 HIV subjects met the search criteria. Fourteen studies compared the tests in subjects with LTBI in low TB prevalence settings. The QFTGT had a similar rate of reactivity to the TST, although the first-generation version of that assay was reactive more commonly. IGRAs were more frequently positive than the TST in HIV infected subjects with active TB. There was considerable study methodology and population heterogeneity, and generally low concordance between tests. Both the TST and IGRAs were affected by CD4 T-cell immunodeficiency. Conclusion Our review of comparative data does not provide robust evidence to support the assertion that the IGRAs are superior to the TST when used in HIV infected subjects to diagnose either active TB or LTBI.
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Affiliation(s)
- Kristen Overton
- Infectious Diseases Department, Prince of Wales Hospital, Randwick, NSW, Australia.,Prince of Wales Clinical School, University of New South Wales, Sydney, NSW, Australia.
| | - Rick Varma
- Infectious Diseases Department, Prince of Wales Hospital, Randwick, NSW, Australia.,Prince of Wales Clinical School, University of New South Wales, Sydney, NSW, Australia
| | - Jeffrey J Post
- Infectious Diseases Department, Prince of Wales Hospital, Randwick, NSW, Australia.,Prince of Wales Clinical School, University of New South Wales, Sydney, NSW, Australia
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9
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Lin AWC, Lau SKP, Woo PCY. Screening and treatment of latent tuberculosis infection among HIV-infected patients in resource-rich settings. Expert Rev Anti Infect Ther 2016; 14:489-500. [PMID: 26999724 DOI: 10.1586/14787210.2016.1168693] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Current international guidelines recommend screening and treatment of latent tuberculosis (TB) infection in HIV-infected patients in all settings. The main factors affecting the risk of TB in HIV-infected patients include the level of immunosuppression, coverage of antiretroviral therapy and local TB burden. In resource-rich settings where antiretroviral therapy is more accessible and HIV-infected patients are expected to be diagnosed at an earlier stage, local TB burden remains a key factor on their risk of TB. This article reviewed the epidemiology of latent TB infection among the adult HIV-infected patients, and the use and benefit of screening and treatment of latent TB infection in resource-rich settings in the past decade. While such practice should be continued in countries with medium or high TB burden, targeted screening and treatment only for HIV-infected patients with additional risk factors for TB might be a more practical option in resource-rich countries with low TB burden.
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Affiliation(s)
- Ada W C Lin
- a Department of Microbiology , The University of Hong Kong , Hong Kong , China
| | - Susanna K P Lau
- a Department of Microbiology , The University of Hong Kong , Hong Kong , China.,b State Key Laboratory of Emerging Infectious Diseases , The University of Hong Kong , Hong Kong , China.,c Research Centre of Infection and Immunology , The University of Hong Kong , Hong Kong , China.,d Carol Yu Centre for Infection , The University of Hong Kong , Hong Kong , China
| | - Patrick C Y Woo
- a Department of Microbiology , The University of Hong Kong , Hong Kong , China.,b State Key Laboratory of Emerging Infectious Diseases , The University of Hong Kong , Hong Kong , China.,c Research Centre of Infection and Immunology , The University of Hong Kong , Hong Kong , China.,d Carol Yu Centre for Infection , The University of Hong Kong , Hong Kong , China
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10
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Ayubi E, Doosti-Irani A, Sanjari Moghaddam A, Sani M, Nazarzadeh M, Mostafavi E. The Clinical Usefulness of Tuberculin Skin Test versus Interferon-Gamma Release Assays for Diagnosis of Latent Tuberculosis in HIV Patients: A Meta-Analysis. PLoS One 2016; 11:e0161983. [PMID: 27622293 PMCID: PMC5021339 DOI: 10.1371/journal.pone.0161983] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 08/15/2016] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Accurate diagnosis of latent tuberculosis infection (LTBI) is becoming increasingly concerning due to the increasing the HIV epidemic, which have increased the risk for reactivation to active tuberculosis (TB) infection. LTBI is diagnosed by tuberculin skin test (TST) and interferon-gamma release assays (IGRAs). OBJECTIVES The aim of the present study was to conduct a meta-analysis of published papers on the agreement (kappa) between TST and QuantiFERON-TB Gold In-Tube (QFT-GIT) tests for diagnosis of LTBI in HIV patient. METHODS Electronic databases including PubMed/Medline, Elsevier/Scopus and Embase/Ovid were reviewed up Jan. 2016. We performed a random effect model meta-analysis for estimation of pooled Kappa between the two methods of diagnosis. Meta regression was used for assessing potential heterogeneity and Egger's test was used for assessing small study effect and publication bias. RESULTS The initial search strategy produced 6744 records. Of them, 23 cross-sectional studies met the inclusion criteria and 20 studies entered in meta-analysis. The pooled kappa was and prevalence-adjusted and bias-adjusted kappa (PABAK) were 0.37 (95% CI: 0.28, 0.46) and 0.59 (0.49, 0.69). The discordance of TST-/QFT-GIT+ was more than TST+/QFT-GIT-. Kappa estimate between two tests was linearly associated with age and prevalence index and inversely associated with bias index. CONCLUSION Fair agreement between TST and QFT-GIT makes it difficult to know whether TST is as useful as the QFT-GIT in HIV-infected patients. The higher discordance of TST-/QFT-GIT+ in compared to TST+/QFT-GIT- can induce the higher sensitivity of QFT-GIT for diagnosis LTBI in HIV patients. Disagreement between two tests can be influenced by error in measurements and prevalence of HIV.
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Affiliation(s)
- Erfan Ayubi
- Department of Epidemiology, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Department of Epidemiology, Pasteur Institute of Iran, Tehran, Iran
- Department of Epidemiology, School of Public Health, Tehran University of Medical sciences, Tehran, Iran
| | - Amin Doosti-Irani
- Department of Epidemiology, Pasteur Institute of Iran, Tehran, Iran
- Department of Epidemiology, School of Public Health, Tehran University of Medical sciences, Tehran, Iran
| | | | - Mohadeseh Sani
- School of Medicine, Zabol University of Medical Sciences, Zabol, Iran
| | - Milad Nazarzadeh
- The collaboration center of meta-analysis research (ccMETA), Iranian Research Center on Healthy Aging, Sabzevar University of Medical Sciences, Sabzevar, Iran
| | - Ehsan Mostafavi
- Department of Epidemiology, Pasteur Institute of Iran, Tehran, Iran
- Research Center for Emerging and Reemerging infectious diseases (Akanlu), Hamadan, Iran
- * E-mail: ;
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Santin M, García-García JM, Domínguez J. Guidelines for the use of interferon-γ release assays in the diagnosis of tuberculosis infection. Enferm Infecc Microbiol Clin 2016; 34:303.e1-13. [PMID: 26917222 DOI: 10.1016/j.eimc.2015.11.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Accepted: 11/16/2015] [Indexed: 10/22/2022]
Abstract
INTRODUCTION Interferon-gamma release assays are widely used for the diagnosis of tuberculosis infection in low-prevalence countries. However, there is no consensus on their application. The objective of this study was to develop guidelines for the use of interferon-gamma release assays in specific clinical scenarios in Spain. METHODS A panel of experts comprising specialists in infectious diseases, respiratory diseases, microbiology, pediatrics and preventive medicine, together with a methodologist, formulated the clinical questions and outcomes of interest. They conducted a systematic literature search, summarized the evidence and rated its quality, and prepared the recommendations following the GRADE (Grading of Recommendations of Assessment Development and Evaluations) methodology. RESULTS The panel prepared recommendations on the use of interferon-gamma release assays for the diagnosis of tuberculosis infection in the contact-tracing study (both adults and children), health care workers, immunosuppressed patients (patients infected with human immunodeficiency virus, patients with chronic immunomediated inflammatory diseases due to start biological therapy and patients requiring organ transplant) and for the diagnosis of active tuberculosis. Most recommendations were weak, mainly due to the lack of good quality evidence to balance the clinical benefits and disadvantages of the interferon-gamma release assays as compared with the tuberculin skin test. CONCLUSION This document provides evidence-based guidance on the use of interferon-gamma release assays for the diagnosis of tuberculosis infection in patients at risk of tuberculosis or with suspicion of active disease. The guidelines will be applicable in specialist and primary care and in public health settings.
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Affiliation(s)
- Miguel Santin
- Service of Infectious Diseases, Bellvitge University Hospital-IDIBELL, Barcelona, Spain; Department of Clinical Sciences, University of Barcelona, Barcelona, Spain
| | | | - José Domínguez
- Service of Microbiology, Research Institute Trias i Pujol, Hospital Gremans Trias i Pujol, Barcelona, Spain; Department of Genetics and Microbiology, Universidad Autónoma de Barcelona, Barcelona, Spain; CIBER Respiratory Diseases, Madrid, Spain.
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Abstract
PURPOSE OF REVIEW The detection of latent tuberculosis infection (LTBI) in different categories of compromised patients is reviewed with focus on the role of strategies incorporating immunodiagnostic tests and analysis of epidemiological and clinical risk factors. RECENT FINDINGS The development of active tuberculosis (TB) is increased in compromised patients and is closely related to determinants for disease reactivation or newly acquired TB infection. A targeted detection of LTBI in these high-risk groups should be performed especially if preventive treatment is planned. The performance of immunodiagnostic tests is highly variable among different groups of immunocompromised individuals. Findings of cross-sectional studies indicate a better diagnostic accuracy of interferon-γ release assays over the tuberculin skin test. The critical issue is that in low-incidence countries, the positive and negative predictive values of any of immunodiagnostic tests were very poor. A targeted testing process involving analysis of TB risk factors increases the predictive positive values of immunodiagnostic tests and may improve LTBI detection. SUMMARY The LTBI detection in immunocompromised patients is a challenge. The development of new immunological biomarkers and integrated clinical and epidemiological strategies are needed to identify LTBI in compromised individuals and to plan preventive chemotherapies in those at risk of developing active TB.
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Khawcharoenporn T, Apisarnthanarak A, Phetsuksiri B, Rudeeaneksin J, Srisungngam S, Mundy LM. Tuberculin skin test and QuantiFERON-TB Gold In-tube Test for latent tuberculosis in Thai HIV-infected adults. Respirology 2014; 20:340-7. [PMID: 25428131 DOI: 10.1111/resp.12442] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 09/19/2014] [Accepted: 09/25/2014] [Indexed: 12/20/2022]
Abstract
BACKGROUND AND OBJECTIVE Limited data exist for the performance of QuantiFERON-TB Gold In-tube Test (QFT-IT) in comparison to tuberculin skin test (TST) for detecting latent tuberculosis (LTB) in patients with human immunodeficiency virus (HIV) infection from tuberculosis (TB)-endemic Asia-Pacific countries. METHODS A cohort study of Thai HIV-infected patients without history of TB or LTB treatment was conducted from March 2012 through March 2013. Each patient underwent simultaneous TST and QFT-IT. RESULTS Among the 150 enrolled subjects, the median age was 40 years (range 17-65), 53% were male, and the median CD4 count was 367 cells/μL (range 8-1290). Reactive TST and positive QFT-IT were 16% and 13%, respectively, with low concordance between tests (kappa = 0.26); correlation between TST reaction size and level of interferon-γ was moderate (r = 0.34). Independent factors associated with discordant results were long-term smoking (adjusted odds ratio (aOR) 5.74; P = 0.002) for TST-reactive, QFT-IT-negative subjects, and age greater than 52 years (aOR 5.56; P = 0.02) and female gender (aOR 4.40; P = 0.04) for TST non-reactive, QFT-IT-positive subjects. The level of agreement between both tests improved when using a TST cut-off of ≥ 10 mm (kappa = 0.39). CONCLUSIONS In our setting where QFT-IT is available but has limited use due to cost, TST with a cut-off of 10 mm for reactivity should be the initial LTB test. HIV-infected women and persons older than 52 years with non-reactive TST and long-term smokers with reactive TST may benefit from subsequent QFT-IT.
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Affiliation(s)
- Thana Khawcharoenporn
- Division of Infectious Diseases, Faculty of Medicine, Thammasat University, Pathumthani, Thailand
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14
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Souza JMO, Evangelista MDSN, Trajman A. Added value of QuantiFERON TB-gold in-tube for detecting latent tuberculosis infection among persons living with HIV/AIDS. BIOMED RESEARCH INTERNATIONAL 2014; 2014:294963. [PMID: 24991546 PMCID: PMC4058839 DOI: 10.1155/2014/294963] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Accepted: 05/13/2014] [Indexed: 12/03/2022]
Abstract
OBJECTIVE To evaluate the added value of QuantiFERON TB-Gold in-Tube (QTF-GIT) over the tuberculin skin testing (TST) for detecting latent tuberculosis (TB) infection (LTBI) among patients with AIDS in a city with a low TB incidence rate (11.1/100,000 inhabitants) and universal BCG coverage. METHODS Three hundred consecutive patients with AIDS in eight outpatient sexually transmitted disease public clinics in Brasilia were submitted to QFT-IT and TST between May 2011 and March 2013. A positive result of either test was considered to be LTBI. RESULTS Median CD4-cell count was 477.5 cells/mm(3); 295 (98.3%) were using antiretroviral therapy. Eighteen patients (6%, 95% CI: 3.6%-9.3%) had LTBI, of whom 4 (1.3%, 95% CI: 0.04%-2.63%) had only a positive TST, 8 (2.7%, 95% CI: 0.8%-4.5%) had only a QFT-GIT positive test, and 6 (2%, 95% CI: 0.4%-3.6%) had positive results for both tests. This represents an 81.8% relative increase in LTBI detection when QFT-GIT is added to TST. The concordance between both tests was 96% (k = 0.48). CONCLUSIONS The QFT-GIT alone was more effective to detect LTBI than TST alone and had an 81% added value as an add-on sequential test in this population with mild immunosuppression. The cost-effectiveness of these strategies remains to be evaluated.
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Affiliation(s)
- Josiane Maria Oliveira Souza
- University of Brasilia (UnB), Campus Universitário Darcy Ribeiro, 70910-900 Brasília, DF, Brazil
- SHA, Conjunto 5 chácara 47, Quadra D, Arniqueiras, 71995-297 Taguatinga, DF, Brazil
| | - Maria do Socorro Nantua Evangelista
- University of Brasilia (UnB), Campus Universitário Darcy Ribeiro, 70910-900 Brasília, DF, Brazil
- Catholic University of Brasilia (UCB), Campus I, QS 07 Lote 01 EPCT, Águas Claras, 71966-700 Taguatinga, DF, Brazil
| | - Anete Trajman
- Federal University of Rio de Janeiro (UFRJ), Avenida Brigadeiro Trompowsky s/n°, Ilha do Fundão Prédio do Hospital Universitário Clementino Fraga Filho, 11° andar Bloco F, Sala 4, 21941-590 Rio de Janeiro, RJ, Brazil
- Montreal Chest Institute, McGill University, 3650 St. Urbain Street, Montreal, QC, Canada H2X 2P4
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15
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Whitworth HS, Aranday-Cortes E, Lalvani A. Biomarkers of tuberculosis: a research roadmap. Biomark Med 2013; 7:349-62. [PMID: 23734796 DOI: 10.2217/bmm.13.53] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Tuberculosis (TB) continues to represent a major public health problem worldwide. Prompt and accurate diagnosis and effective treatment are fundamental to reducing morbidity and mortality and curtailing spread of infection. Furthermore, tackling the large reservoir of latent infection is the cornerstone to TB control in many high income low TB incidence countries. However, our existing toolkit for prevention, diagnosis and treatment remains outdated and inadequate. Here, we discuss the key targets for biomarker research and discovery in TB and recent developments in the field. We focus on host biomarkers, in particular: correlates of vaccine efficacy and sterilizing immunity; biomarkers of latent TB infection, including diagnosis, risk of progression to active TB and response to treatment; and markers of active TB, including diagnosis, response to treatment and risk of relapse. Recent scientific and technological advances have contributed to significant recent progression in biomarker discovery. Although there are clear remaining paucities, continued efforts within scientific, translational and clinical studies are likely to yield a number of clinically useful biomarkers of TB in the foreseeable future.
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Affiliation(s)
- Hilary S Whitworth
- Tuberculosis Research Unit, Department of Respiratory Medicine, National Heart & Lung Institute, Imperial College London, London W2 1PG, UK
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16
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Redelman-Sidi G, Sepkowitz KA. IFN-γ release assays in the diagnosis of latent tuberculosis infection among immunocompromised adults. Am J Respir Crit Care Med 2013; 188:422-31. [PMID: 23262514 PMCID: PMC12056979 DOI: 10.1164/rccm.201209-1621ci] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Accepted: 11/28/2012] [Indexed: 01/18/2023] Open
Abstract
Immunocompromised persons with latent tuberculosis infection (LTBI) are at increased risk for tuberculosis reactivation compared with the general population. The tuberculin skin test, the traditional assay for diagnosing LTBI, has reduced accuracy in immunocompromised patients. IFN-γ release assays (IGRAs) are in vitro blood tests that measure T-cell release of IFN-γ after stimulation with antigens unique to Mycobacterium tuberculosis. Here we review the data for the use of QuantiFERON-TB Gold In-Tube and T-SPOT.TB, the two currently available IGRAs, in immunocompromised adults, including persons infected with HIV, patients with immune-mediated inflammatory disorders, candidates for treatment with tumor necrosis factor-α inhibitors, patients receiving hemodialysis, solid-organ transplant recipients, and patients with cancer. On the basis of the available data, IGRAs have advantages over the tuberculin skin test in specific patient populations and in certain situations. Further studies are needed to more accurately define the usefulness of IGRAs in immunocompromised patients.
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Affiliation(s)
- Gil Redelman-Sidi
- Infectious Disease Service, Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, NY 10065, USA.
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Trajman A, Steffen RE, Menzies D. Interferon-Gamma Release Assays versus Tuberculin Skin Testing for the Diagnosis of Latent Tuberculosis Infection: An Overview of the Evidence. Pulm Med 2013; 2013:601737. [PMID: 23476763 PMCID: PMC3582085 DOI: 10.1155/2013/601737] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Accepted: 01/10/2013] [Indexed: 11/18/2022] Open
Abstract
A profusion of articles have been published on the accuracy and uses of interferon-gamma releasing assays. Here we review the clinical applications, advantages, and limitations of the tuberculin skin test and interferon-gamma release assays and provide an overview of the most recent systematic reviews conducted for different indications for the use of these tests. We conclude that both tests are accurate to detect latent tuberculosis, although interferon-gamma release assays have higher specificity than tuberculin skin testing in BCG-vaccinated populations, particularly if BCG is received after infancy. However, both tests perform poorly to predict risk for progression to active tuberculosis. Interferon-gamma release assays have significant limitations in serial testing because of spontaneous variability and lack of a validated definition of conversion and reversion, making it difficult for clinicians to interpret changes in category (conversions and reversions). So far, the most important clinical evidence, that is, that isoniazid preventive therapy reduces the risk for progression to disease, has been produced only in tuberculin skin test-positive individuals.
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Affiliation(s)
- A. Trajman
- Gama Filho University, 20740-900 Rio de Janeiro, RJ, Brazil
- Montreal Chest Institute, McGill University, Montreal, QC, Canada H2X 2P4
| | - R. E. Steffen
- Federal University of Rio de Janeiro, 21941-913 Rio de Janeiro, RJ, Brazil
| | - D. Menzies
- Montreal Chest Institute, McGill University, Montreal, QC, Canada H2X 2P4
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Diel R, Loddenkemper R, Nienhaus A. Predictive Value of Interferon-γ Release Assays and Tuberculin Skin Testing for Progression From Latent TB Infection to Disease State. Chest 2012; 142:63-75. [DOI: 10.1378/chest.11-3157] [Citation(s) in RCA: 184] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Ruhwald M, Aabye MG, Ravn P. IP-10 release assays in the diagnosis of tuberculosis infection: current status and future directions. Expert Rev Mol Diagn 2012; 12:175-87. [PMID: 22369377 DOI: 10.1586/erm.11.97] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The current state-of-the-art tests for infection with Mycobacterium tuberculosis - the IFN-γ release assays - rely on accurate measurement of the cytokine IFN-γ. Many other potential biomarkers are expressed in concert with IFN-γ, and IP-10 in particular has shown promising results. IP-10 is produced in large amounts, allowing for the development of new and simplified test platforms, such as lateral flow. In this review, we summarize the results of 22 clinical studies exploring the use of IP-10 as an alternative marker to IFN-γ. The studies report that diagnostic accuracy of IP-10 is on par with IFN-γ, but also that IP-10 may be more robust in young children and in HIV-infected individuals with low CD4 cell counts. We conclude the review by presenting limitations of the published works and outline recent developments and future directions.
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Affiliation(s)
- Morten Ruhwald
- Clinical Research Centre, Copenhagen University Hospital, Hvidovre, Copenhagen, Denmark.
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Kabeer BSA, Sikhamani R, Raja A. Comparison of interferon gamma-inducible protein-10 and interferon gamma-based QuantiFERON TB Gold assays with tuberculin skin test in HIV-infected subjects. Diagn Microbiol Infect Dis 2012; 71:236-43. [PMID: 21996360 DOI: 10.1016/j.diagmicrobio.2011.07.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2011] [Revised: 07/06/2011] [Accepted: 07/25/2011] [Indexed: 12/31/2022]
Abstract
We aimed to compare the positivity of the QuantiFERON TB gold in-tube (QFT-IT antigens) specific interferon gamma (IFN-γ/QFT-IT) and IFN-γ-inducible protein-10 (IP-10/QFT-IT) assays with tuberculin skin test (TST) among human immunodeficiency virus (HIV)-infected individuals in a TB endemic setting. A total of 180 HIV-infected subjects, with no evidence of active TB, were recruited. IFN-γ and IP-10 levels specific to QFT-IT antigens were measured in plasma from QFT-IT tubes. The overall positivity of TST at the 5-mm cut-off point (19%) was significantly lower when compared to IFN-γ/QFT-IT (38%) and IP-10/QFT-IT (45%) assays. The positivity of IP-10/QFT-IT was significantly higher than that of IFN-γ/QFT-IT (P = 0.038). Indeterminate results for IFN-γ/QFT-IT and IP-10/QFT-IT were more frequent in subjects with CD4 count <100 cells/μL than in those with >100 cells/μL. IFN-γ/QFT-IT (9%) yielded significantly higher number of indeterminate results than IP-10/QFT-IT (5%). The frequency of these responses is higher than the proportion of individuals with positive TST results. However, 6 IFN-γ/QFT-IT- or IP-10/QFT-IT-negative subjects were positive for TST at the 5-mm cut-off point. Prospective and prognostic studies are required to clarify the significance of these data.
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Santin M, Muñoz L, Rigau D. Interferon-γ release assays for the diagnosis of tuberculosis and tuberculosis infection in HIV-infected adults: a systematic review and meta-analysis. PLoS One 2012; 7:e32482. [PMID: 22403663 PMCID: PMC3293815 DOI: 10.1371/journal.pone.0032482] [Citation(s) in RCA: 112] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2011] [Accepted: 01/30/2012] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Despite the widespread use of interferon-γ release assays (IGRAs), their role in diagnosing tuberculosis and targeting preventive therapy in HIV-infected patients remains unclear. We conducted a comprehensive systematic review to contribute to the evidence-based practice in HIV-infected people. METHODOLOGY/PRINCIPAL FINDINGS We searched MEDLINE, Cochrane, and Biomedicine databases to identify articles published between January 2005 and July 2011 that assessed QuantiFERON®-TB Gold In-Tube (QFT-GIT) and T-SPOT®.TB (T-SPOT.TB) in HIV-infected adults. We assessed their accuracy for the diagnosis of tuberculosis and incident active tuberculosis, and the proportion of indeterminate results. The search identified 38 evaluable studies covering a total of 6514 HIV-infected participants. The pooled sensitivity and specificity for tuberculosis were 61% and 72% for QFT-GIT, and 65% and 70% for T-SPOT.TB. The cumulative incidence of subsequent active tuberculosis was 8.3% for QFT-GIT and 10% for T-SPOT.TB in patients tested positive (one study each), and 0% for QFT-GIT (two studies) and T-SPOT.TB (one study) respectively in those tested negative. Pooled indeterminate rates were 8.2% for QFT-GIT and 5.9% for T-SPOT.TB. Rates were higher in high burden settings (12.0% for QFT-GIT and 7.7% for T-SPOT.TB) than in low-intermediate burden settings (3.9% for QFT-GIT and 4.3% for T-SPOT.TB). They were also higher in patients with CD4(+) T-cell count <200 (11.6% for QFT-GIT and 11.4% for T-SPOT.TB) than in those with CD4(+) T-cell count ≥ 200 (3.1% for QFT-GIT and 7.9% for T-SPOT.TB). CONCLUSIONS/SIGNIFICANCE IGRAs have suboptimal accuracy for confirming or ruling out active tuberculosis disease in HIV-infected adults. While their predictive value for incident active tuberculosis is modest, a negative QFT-GIT implies a very low short- to medium-term risk. Identifying the factors associated with indeterminate results will help to optimize the use of IGRAs in clinical practice, particularly in resource-limited countries with a high prevalence of HIV-coinfection.
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Affiliation(s)
- Miguel Santin
- Department of Infectious Diseases, Bellvitge University Hospital-IDIBELL, L'Hospitalet, Barcelona, Spain.
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Fraisse P. Diagnostic des infections tuberculeuses latentes (sujets sains, sujets immunodéprimés ou amenés à l’être). Rev Mal Respir 2012; 29:277-318. [DOI: 10.1016/j.rmr.2011.05.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2011] [Accepted: 05/11/2011] [Indexed: 01/30/2023]
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Rangaka MX, Wilkinson KA, Glynn JR, Ling D, Menzies D, Mwansa-Kambafwile J, Fielding K, Wilkinson RJ, Pai M. Predictive value of interferon-γ release assays for incident active tuberculosis: a systematic review and meta-analysis. THE LANCET. INFECTIOUS DISEASES 2012; 12:45-55. [PMID: 21846592 PMCID: PMC3568693 DOI: 10.1016/s1473-3099(11)70210-9] [Citation(s) in RCA: 367] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND We aimed to assess whether interferon-γ release assays (IGRAs) can predict the development of active tuberculosis and whether the predictive ability of these tests is better than that of the tuberculin skin test (TST). METHODS Longitudinal studies of the predictive value for active tuberculosis of in-house or commercial IGRAs were identified through searches of PubMed, Embase, Biosis, and Web of Science and complementary manual searches up to June 30, 2011. Eligible studies included adults or children, with or without HIV, who were free of active tuberculosis at study baseline. We summarised incidence rates in forest plots and pooled data with random-effects models when appropriate. We calculated incidence rate ratios (IRR) for rates of disease progression in IGRA-positive versus IGRA-negative individuals. FINDINGS 15 studies had a combined sample size of 26 680 participants. Incidence of tuberculosis during a median follow-up of 4 years (IQR 2-6), even in IGRA-positive individuals, was 4-48 cases per 1000 person-years. Seven studies with no possibility of incorporation bias and reporting baseline stratification on the basis of IGRA results showed a moderate association between positive results and subsequent tuberculosis (pooled unadjusted IRR 2·10, 95% CI 1·42-3·08). Compared with test-negative results, IGRA-positive and TST-positive results were much the same with regard to the risk of tuberculosis (pooled IRR in the five studies that used both was 2·11 [95% CI 1·29-3·46] for IGRA vs 1·60 [0·94-2·72] for TST at the 10 mm cutoff). However, the proportion of IGRA-positive individuals in seven of 11 studies that assessed both IGRAs and TST was generally lower than TST-positive individuals. INTERPRETATION Neither IGRAs nor the TST have high accuracy for the prediction of active tuberculosis, although use of IGRAs in some populations might reduce the number of people considered for preventive treatment. Until more predictive biomarkers are identified, existing tests for latent tuberculosis infection should be chosen on the basis of relative specificity in different populations, logistics, cost, and patients' preferences rather than on predictive ability alone. FUNDING Special Programme for Research and Training in Tropical Diseases (WHO), Wellcome Trust, Canadian Institutes of Health Research, UK Medical Research Council, and the European and Developing Countries Clinical Trials Partnership.
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Affiliation(s)
- Molebogeng X Rangaka
- Centre for Infectious Disease Research and Epidemiology, University of Cape Town, South Africa
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Improving the diagnosis of tuberculosis: From QuantiFERON to new techniques to diagnose tuberculosis infections. Curr HIV/AIDS Rep 2011; 8:153-63. [PMID: 21660459 DOI: 10.1007/s11904-011-0083-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The diagnosis of latent and active tuberculosis in the HIV-positive population is challenged by diminished sensitivity of conventional tests, atypical presentations, and the lack of culture methods in the developing world, where the burden of co-infection is greatest. In response to these challenges, a variety of new diagnostics have emerged. These include interferon-gamma release assays for the diagnosis of latent tuberculosis (TB) infection and novel culture methods and molecular assays for the diagnosis of active tuberculosis. Although some tests (such as interferon-gamma release assays) are not clearly superior to existing diagnostics, other novel diagnostics, such as real-time polymerase chain reaction and the microscopic observed direct susceptibility assay hold much promise for prompt and accurate TB diagnosis in this population. Line-probe, nitrate reductase, and mycobacteriophage assays have also provided rapid alternatives to conventional time-consuming drug susceptibility testing and are critical to curtailing the spread of multidrug-resistant TB.
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Casas S, Muñoz L, Moure R, Castellote J, Guerra MR, Gonzalez L, Andreu A, Rafecas AG, Alcaide F, Santin M. Comparison of the 2-step tuberculin skin test and the quantiFERON-TB Gold In-Tube Test for the screening of tuberculosis infection before liver transplantation. Liver Transpl 2011; 17:1205-11. [PMID: 22279622 DOI: 10.1002/lt.22375] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The ability of interferon-gamma release assays (IGRAs) to detect latent tuberculosis (TB) infection before liver transplantation (LT)is not well established. The aims of this study were (1) to compare the ability of the tuberculin skin test (TST) and the QuantiFERON-TB Gold In-Tube (QFT-IT) test (a whole-blood IGRA) to diagnose latent TB infections in patients awaiting LT and (2) to correlate the results with the severity of liver disease. We conducted a prospective, cross-sectional study of patients who were evaluated for LT between July 2008 and July 2010. The 95 patients who were included underwent the 2-step TST and the QFT-IT test. The mean Model for End-Stage Liver Disease (MELD) score was 13.8. Forty-four patients (46.3%) had positive TST results, 42 (44.2%) had positive QFT-IT results, and 2 (2.1%) had indeterminate QFT-IT results. Simultaneous TST and QFT-IT testing yielded a positivity rate of 55.8% [95% confidence interval (CI) = 45.3-65.9] with either test, and the 2-step TST yielded a positivity rate of 46.3% (95% CI = 36.1-56.8); the difference was 9.5% (P = 0.004). In an adjusted analysis, the rates for positive TST results were lower in patients with MELD scores > or = 18 [odds ratio (OR) = 0.2, 95% CI = 0.04-0.7], lower in Child-Pugh-Turcotte (CPT) class C patients versus CPT class A patients (OR = 0.1, 95% CI = 0.02-0.6), and higher in males (OR = 6.4, 95% CI = 1.9-22.0). In contrast, only being male (OR = 3.5, 95% CI = 1.1-11.0) was associated with positive QFT-IT results; no association was found with the MELD score (OR = 0.8, 95% CI = 0.2-2.8) or the CPT class (OR = 0.3; 0.05-1.4). In conclusion, the QFT-IT test is better than the TST for detecting latent TB infection in patients with more advanced liver disease. Our results support the regular use of the QFT-IT test for screening patients with end-stage liver disease for latent TB infection before LT.
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Affiliation(s)
- Susana Casas
- Department of Infectious Diseases, Bellvitge University Hospital, Bellvitge Biomedical Research Institute, Barcelona, Spain
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Talati NJ, Gonzalez-Diaz E, Mutemba C, Wendt J, Kilembe W, Mwananyanda L, Chomba E, Allen S, del Rio C, Blumberg HM. Diagnosis of latent tuberculosis infection among HIV discordant partners using interferon gamma release assays. BMC Infect Dis 2011; 11:264. [PMID: 21962029 PMCID: PMC3198954 DOI: 10.1186/1471-2334-11-264] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Accepted: 09/30/2011] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND There is limited data on the effect of HIV status and CD4 counts on performance of Interferon-g Release assays (IGRAs) for diagnosis of latent tuberculosis infection (LTBI). METHODS A cross sectional study was conducted to assess the prevalence of and risk factors for a positive diagnostic test for LTBI, using tuberculin skin test (TST) and IGRAs among HIV-discordant couples in Zambia. RESULTS A total of 596 subjects (298 couples) were enrolled. Median CD4 count among HIV positive persons was 388 cells/μl, (range 51-1330). HIV negative persons were more likely than their HIV positive partner, to have a positive diagnostic test for LTBI with TST (203 vs 128), QFT (171 vs 109) and TSPOT (156 vs. 109). On multivariate analysis, HIV negative status was an independent predictor for a positive QFT (OR = 2.22, 95% CI 1.42- 3.46) and TSPOT (OR = 1.79, 95% CI 1.16-2.77). Among HIV positive subjects a CD4 count ≥ 388 cells/μl was associated with a positive TST (OR = 1.76 95% CI 1.10-2.82) and QFT (OR = 1.71 95% CI 1.06-2.77) but not TSPOT (OR = 1.20 95% CI 0.74-1.94). CONCLUSIONS Persons with HIV had significantly fewer positive diagnostic tests for LTBI with TST, QFT and TSPOT. Persons with a CD4 count < 388 cells/μl were less likely to have a positive TST or QFT, but not less likely to have a positive TSPOT. TSPOT may perform better than TST or QFT in HIV positive individuals.
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Affiliation(s)
- Naasha J Talati
- Department of Medicine, University of Pennsylvania, Philadelphia, PA 19019, USA.
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Santín Cerezales M, Benítez JD. Diagnosis of tuberculosis infection using interferon-γ-based assays. Enferm Infecc Microbiol Clin 2011; 29 Suppl 1:26-33. [DOI: 10.1016/s0213-005x(11)70015-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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