TY - JOUR
T1 - Identification of Recent Tuberculosis Exposure Using QuantiFERON-TB Gold Plus, a Multicenter Study
AU - Pérez-Recio, Sandra
AU - Pallarès, Natàlia
AU - Grijota-Camino, Maria D.
AU - Sánchez-Montalvá, Adrián
AU - Barcia, Laura
AU - Campos-Gutiérrez, Silvia
AU - Pomar, Virginia
AU - Rabuñal-Rey, Ramón
AU - Balcells, María Elvira
AU - Gazel, Denzil
AU - Montiel, Natalia
AU - Vicente, Diego
AU - Goić-Barišić, Ivana
AU - Schön, Thomas
AU - Paues, Jakob
AU - Mareković, Ivana
AU - Cacho-Calvo, Juana
AU - Barac, Aleksandra
AU - Goletti, Delia
AU - García-Gasalla, Mercedes
AU - Barcala, José María
AU - Tórtola Fernández, María Teresa
AU - Anibarro, Luis
AU - Suárez-Toste, Isabel
AU - Moga, Esther
AU - Gude-González, María José
AU - Naves, Rodrigo
AU - Karsligil, Tekin
AU - Martin-Peñaranda, Tania
AU - Stevanovic, Goran
AU - Trigo, Matilde
AU - Rubio, Verónica
AU - Karaoǧlan, Ilkay
AU - Bayram, Nazan
AU - Alcaide, Fernando
AU - Tebé, Cristian
AU - Santin, Miguel
PY - 2021
Y1 - 2021
N2 - 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.
AB - 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.
KW - QuantiFERON-TB gold plus
KW - Diagnosis
KW - Latent tuberculosis infection
KW - Tuberculosis-specific CD8 T cells
U2 - 10.1128/Spectrum.00972-21
DO - 10.1128/Spectrum.00972-21
M3 - Article
C2 - 34756079
SN - 2165-0497
VL - 9
JO - Microbiology spectrum
JF - Microbiology spectrum
IS - 3
ER -