Types of autoimmune diseases in relatives of IgG4-RD patients
| Family history of AID | Number of IgG4-RD patients (n=93) | Percentage (%) |
| RA | 34 | 36.6 |
| IgG4-RD | 16 | 17.2 |
| SLE | 8 | 8.6 |
| Psoriasis | 8 | 8.6 |
| GD | 8 | 8.6 |
| HT | 7 | 7.5 |
| SS | 6 | 6.4 |
| Spondyloarthritis | 6 | 6.4 |
| Vitiligo | 3 | 3.2 |
| PBC | 3 | 3.2 |
| DM | 2 | 2.2 |
| Autoimmune nephritis | 2 | 2.2 |
| ITP | 2 | 2.2 |
| UCTD | 1 | 1.1 |
| Type1 diabetes | 1 | 1.1 |
| AIH | 1 | 1.1 |
| TA | 1 | 1.1 |
| AIHA | 1 | 1.1 |
AIH, autoimmune hepatitis; AIHA, autoimmune haemolytic anaemia; DM, dermatomyositis; GD, Grave’s disease; HT, Hashimoto thyroiditis; IgG4-RD, IgG4-related disease; ITP, immune thrombocytopenia; PBC, primary biliary cholangitis; RA, rheumatoid arthritis; SLE, systemic lupus erythematosus; SS, Sjögren’s syndrome; TA, Takayasu arteritis; UCTD, undifferentiated connective tissue disease.