Overview of the published studies on IGRA response among patients with non tuberculous mycobacterial disease.

#1 co-infected with MAC and M. abscessus.
*5 patients are excluded due to indeterminate results, 17.5% had a previous history of TB
+31% had a previous history of TB.
##Patients with a history of TB were excluded
**Patients with a history of TB and TB contacts excluded.
++4 Patients were excluded due to indeterminate results.
###Study of patients suspected of TB.
***7 Patients were excluded due to indeterminate results.
+++Data on these patients are not included in the “Total” column below. Age is expressed as median. “Others” constitute M. abscessus/chelonae, interjectum, shimoidei,simiae and xenopi (see Table 3a).
Abbreviations: N.A.: not available.
QTF-2G: QuantiFERON TB 2 Gold, Cellestis.
QTF-GIT: QuantiFERON TB Gold-In-Tube, Cellestis.
IGRA: Interferon-gamma release assay.
MAC: Mycobacterium avium-intracellulare complex.
T-SPOT: T-SPOT.TB, Oxford Immunotec.