Maertzdorf et al. found overlapping peripheral blood transcriptional profiles between patients with active pulmonary sarcoidosis and TB [14], while Zhao et al. identified IFNγ signaling in lung tissue and peripheral blood from both pulmonary sarcoidosis and TB [56], suggesting that systemic IFN circulation is involved in ISG induction. Here, IFNA1 is linked to pulmonary sarcoidosis.