Identification of Recent Tuberculosis Exposure Using QuantiFERON-TB Gold Plus, a Multicenter Study

Sandra Pérez-Recio, Natàlia Pallarès, Maria D. Grijota-Camino, Adrián Sánchez-Montalvá, Laura Barcia, Silvia Campos-Gutiérrez, Virginia Pomar, Ramón Rabuñal-Rey, María Elvira Balcells, Denzil Gazel, Natalia Montiel, Diego Vicente, Ivana Goić-Barišić, Thomas Schön, Jakob Paues, Ivana Mareković, Juana Cacho-Calvo, Aleksandra Barac, Delia Goletti, Mercedes García-GasallaJosé María Barcala, María Teresa Tórtola Fernández, Luis Anibarro, Isabel Suárez-Toste, Esther Moga, María José Gude-González, Rodrigo Naves, Tekin Karsligil, Tania Martin-Peñaranda, Goran Stevanovic, Matilde Trigo, Verónica Rubio, Ilkay Karaoǧlan, Nazan Bayram, Fernando Alcaide, Cristian Tebé, Miguel Santin

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10 Citations (Scopus)

Abstract

We investigated whether the difference of antigen tube 2 (TB2) minus antigen tube 1 (TB1) (TB22TB1) of the QuantiFERON-TB gold plus test, which has been postulated as a surrogate for the CD81 T-cell response, could be useful in identifying recent tuberculosis (TB) exposure. We looked at the interferon gamma (IFN-g) responses and differences in TB2 and TB1 tubes for 686 adults with QFT-plus positive test results. These results were compared among groups with high (368 TB contacts), low (229 patients with immune-mediated inflammatory diseases [IMID]), and indeterminate (89 asylum seekers or people from abroad [ASPFA]) risks of recent TB exposure. A TB22TB1 value.0.6 IU_ml21 was deemed to indicate a true difference between tubes. In the whole cohort, 13.6%, 10.9%, and 11.2% of cases had a TB2.TB1 result in the contact, IMID, and ASPFA groups, respectively (P = 0.591). The adjusted odds ratios (aORs) for an association between a TB22TB1 result of.0.6 IU_ml21 and risk of recent exposure versus contacts were 0.71 (95% confidence interval [CI], 0.31 to 1.61) for the IMID group and 0.86 (95% CI, 0.49 to 1.52) for the ASPFA group. In TB contact subgroups, 11.4%, 15.4%, and 17.7% with close, frequent, and sporadic contact had a TB2.TB1 result (P = 0.362). The aORs versus the close subgroup were 1.29 (95% CI, 0.63 to 2.62) for the frequent subgroup and 1.55 (95% CI, 0.67 to 3.60) for the sporadic subgroup. A TB22TB1 difference of.0.6 IU_ml21 was not associated with increased risk of recent TB exposure, which puts into question the clinical potential as a proxy marker for recently acquired TB infection.
Original languageEnglish
JournalMicrobiology spectrum
Volume9
Issue number3
DOIs
Publication statusPublished - 2021

Keywords

  • QuantiFERON-TB gold plus
  • Diagnosis
  • Latent tuberculosis infection
  • Tuberculosis-specific CD8 T cells

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