Several tumor necrosis factor (TNF) superfamily genes (TNFSF8, LTB, TNFSF12, TNFSF13B, TNFSF14, TNFSF13, EDA) were upregulated, with LTB and EDA reaching higher levels than in other inflammatory myopathies (Supplementary Fig. S15). This evidence concerns the gene TNFSF13B and myopathy.