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The descriptive characteristics of the study population.
| IgG4-RD patients | Sarcoidosis patients | Controls (anonymous blood bank donors) | |
|---|---|---|---|
| Number | 26 | 78 | 101 |
| Median age (IQR) | 53 years (41–61) | 49 years (38–56) | Not applicable |
| Males | 20 (76.9%) | 37 (47.7%) | Not applicable |
| Females | 6 (23.1%) | 41 (52.6%) | Not applicable |
| Median serum sIL-2R (IQR) | 4667 pg/ml (3485–7319) | 6050 pg/ml (4651–9475) | 1515 pg/ml (1150–1880) |
