Table 1. Characteristics of patients and controls: 118 patients with anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis, 300 with autoimmune and gastrointestinal diseases, 49 with infectious disorders, and 125 blood donors (BD) were enrolled in the study.
| Diagnosis | N | Gender | Age | Age |
| f/m | median | interquartile range | ||
| ANCA-associated vasculitis | ||||
| GPA | 90 | 51/39 | 65 | 56–89 |
| MPA | 28 | 14/14 | 67 | 51–72 |
| Autoimmune disease controls | ||||
| RA | 133 | 99/34 | 62 | 56–69 |
| PSC | 70 | 21/49 | 45 | 35–57 |
| AIH I | 10 | 8/2 | 13 | 12–15 |
| AIH II | 10 | 10/0 | 11 | 8–14 |
| UC | 57 | 31/26 | 49 | 38–57 |
| CD | 20 | 15/5 | 40 | 32–54 |
| Infectious disease controls | ||||
| Toxoplasmosis | 16 | 15/1 | 34 | 27–43 |
| CMV | 25 | 23/2 | 38 | 33–41 |
| Rubella | 5 | 5/0 | 36 | 31–37 |
| EBV | 3 | 2/1 | 10 | 7–23 |
| Blood Donors | 125 | 64/61 | 21 | 21–26 |
AIH, autoimmune hepatitis; CMV, Cytomegalovirus; CD, Crohn's disease; EBV, Epstein-Barr virus; f, female; GPA, granulomatosis with polyangiitis; m, male; MPA, microscopic polyangiits; N, number; PSC, primary sclerosing cholangitis; RA, rheumatoid arthritis; UC, ulcerative colitis.