Positivity rate of interferon-γ release assays for estimating the prevalence of latent tuberculosis infection in renal transplant recipients in Japan

2019 ◽  
Vol 25 (7) ◽  
pp. 537-542 ◽  
Author(s):  
Hidetoshi Igari ◽  
Naotake Akutsu ◽  
Satoru Ishikawa ◽  
Hiromichi Aoyama ◽  
Kazunori Otsuki ◽  
...  
Author(s):  
Kileen L. Shier

Interferon-gamma release assays are used to screen various patient populations for latent tuberculosis infection. In this issue of the Journal of Clinical Microbiology, Ward et al. (J Clin Microbiol 59:e00811-21, 2021, https://doi.org/10.1128/JCM.00811-21 ) investigated an increased indeterminate rate in the QuantiFERON-TB Gold Plus assay among COVID-19 patients that was independent of immunosuppressive agents and lymphopenia. In their study, COVID-19 patients with indeterminate QuantiFERON-TB Gold Plus results trended toward decreased survival as well as increased serum IL-6 and IL-10 levels, though the differences were not statistically significant. They suggest that this pattern of cytokine expression supports an impairment of Th1, and specifically interferon-γ production, in critically ill COVID-19 patients, as indicated by indeterminate QuantiFERON-TB Gold Plus results. Clinicians should be aware of the increased rate of indeterminate QuantiFERON-TB Gold Plus results in critically ill COVID-19 patients.


2009 ◽  
Vol 13 (5) ◽  
pp. 280-282 ◽  
Author(s):  
Alfred Goodfellow ◽  
Douglas N. Keeling ◽  
Robert C. Hayes ◽  
Duncan Webster

Background: With increasing use of immunosuppressive therapy, including tumor necrosis factor a inhibitors, there is concern about infectious complications, including reactivation of latent Mycobacterium tuberculosis infection. Routine testing prior to administration of systemic immunosuppression includes the tuberculin skin test, which lacks sensitivity and specificity and may be difficult to interpret in the presence of extensive cutaneous disease. Treatment of individuals with latent tuberculosis infection is recommended when immunosuppressive medications are to be employed. Observations: We report a case in which a diagnosis of latent tuberculosis infection in a patient with extensive bullous pemphigoid was clarified by the use of an interferon-γ release assay after equivocal tuberculin skin test results. Conclusion: Interferon-γ release assays are useful adjuncts to the tuberculin skin test in the diagnosis of latent tuberculosis infection in the setting of extensive cutaneous disease.


2002 ◽  
Vol 74 (10) ◽  
pp. 1381-1386 ◽  
Author(s):  
Natividad Benito ◽  
Omar Sued ◽  
Asunci??n Moreno ◽  
Juan Pablo Horcajada ◽  
Juli?? Gonz??lez ◽  
...  

2011 ◽  
Vol 47 (4) ◽  
pp. 401-408 ◽  
Author(s):  
Nataųa Nenadić ◽  
Branka Kristić Kirin ◽  
Ivka Zoričić Letoja ◽  
Davor Plavec ◽  
Renata Zrinski Topić ◽  
...  

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