Additionally, it is essential to view CXR as part of a broader diagnostic algorithm for pediatric TB, which includes assessing symptoms; signs of TB; exposure to a TB source patient; results from tests for M. tuberculosis infection (eg, tuberculin skin tests or interferon-gamma release assays), microbiological tests (eg, Xpert MTB/RIF, microscopy, or culture for M. tuberculosis), and any other relevant supporting tests [15]. Here, IFNG is linked to tuberculosis.