IFNA2 and sarcoidosis: Observed levels of anti-IFNα2 autoantibodies in HCs, sarcoidosis, and TB were substantially lower compared to the level of anti-IFNα2 observed in a patient with APECED (MFI = 29380) and anti-IFNγ in a patient with AOID (MFI = 33381) as detected at a 1000-fold serum dilution.