When analysed according to radiological stage and treatment status, there were no significant differences between controls and sarcoidosis patients for all TH1 cytokines (radiological staging: IFNγ: p = 0.59, T-bet: p = 0.14, IL-27: p = 0.85; treatment status: IFNγ: p = 0.43, T-bet: p = 0.27, IL-27: p = 0.97) (Online Resource 1 and 2). This evidence concerns the gene IL27 and sarcoidosis.