To address this question, 37 EPTB patients including various numbers of TB meningitis (TBM), lymph node TB (LNTB), TB peritonitis (TBP), TB pleurisy (TBPL), bone TB (BTB), intestinal TB (ITB), and renal TB (RTB; Figure 3C), were recruited and the IFN-γ responses of patients with different forms of TB were compared. Here, IFNG is linked to tuberculosis.