Demographic characteristics (for available subjects) and percentage of normal donors and subjects with SLE, DM, PM, RA and SSc with a positive type I interferon (IFN) inducible gene signature in the WB
| Signature | Normal donors | SLE | DM | PM | RA | SSc |
|---|---|---|---|---|---|---|
| Gender (% female) | 77 | 94 | 73 | 63 | 74 | 79 |
| Age (mean±SD) | 39.8±9.4 | 43.0±1.9 | 47.4±13.5 | 53.1±14.4 | 65.2±13.1 | 45.4±11.8 |
| Race (% Caucasian) | NA | 74 | 84 | 78 | 98 | 71 |
| Type I IFN signature (%) | 0.0 | 73 | 66 | 61 | 33 | 68 |
| Total sample size (WB) | 24 | 262 | 44 | 33 | 89 | 28 |
DM, dermatomyositis; PM, polymyositis; RA, rheumatoid arthritis; SLE, systemic lupus erythematosus; SSc, systemic scleroderma; WB, whole blood.