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Low-dose steroids are associated with indeterminate QuantiFERON-TB Gold In-Tube assay results in immunocompetent children

 Kyu Ho Kim  ;  Ji-Man Kang  ;  Jong Gyun Ahn 
 SCIENTIFIC REPORTS, Vol.11(1) : 6468, 2021-03 
Journal Title
Issue Date
Immunocompromised status can result in indeterminate QuantiFERON-TB Gold In-Tube (QFT-GIT) results, but the association of indeterminate results with immunocompetent status in children is unknown. Therefore, we aimed to identify factors associated with indeterminate QFT-GIT results for immunocompetent children. We conducted a retrospective chart review of children (aged ≤ 18 years) who underwent QFT-GIT between September 2006 and July 2017 at the Severance Hospital, Seoul, South Korea. Of the 2037 QFT-GIT assays included in the present study, 7.7% yielded indeterminate QFT-GIT results. Multivariable logistic regression analysis identified younger age (OR 0.88; 95% CI 0.836-0.927; P < 0.001), elevated white blood cell (WBC) count (OR 1.066; 95% CI 1.020-1.115; P = 0.005), decreased albumin levels (OR 0.505; 95% CI 0.316-0.807; P = 0.004), and low-dose steroid therapy (< 1 mg/kg per day of prednisone or equivalent for < 2 weeks) (OR 76.146; 95% CI 8.940-648.569; P < 0.001) as significant factors influencing indeterminate results. Younger age, high WBC count, low albumin levels, and low-dose steroid therapy were associated with indeterminate QFT-GIT results. Low-dose steroid therapy had the highest OR for the indeterminate results compared to other significant risk factors. Our study suggests that screening for steroid doses is important prior to performing interferon-gamma release assays for immunocompetent children.
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1. College of Medicine (의과대학) > Others (기타) > 1. Journal Papers
Yonsei Authors
Kang, Ji-Man(강지만) ORCID logo https://orcid.org/0000-0002-0678-4964
Ahn, Jong Gyun(안종균) ORCID logo https://orcid.org/0000-0001-5748-0015
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