Table 1. The clinical features of IgG4-RD patients included in the current study.

	All patients (n = 43)
Age, y	66 (55–71)
Gender, male, n (%)	33 (77%)
Diabetes, n (%)	11 (26%)
Laboratory examination
IL-6, pg/mL	2.2 (1.3–3.8)
IL-6 increase (> 4 pg/mL), n (%)	10 (23%)
CRP, mg/dL	0.10 (0.05–0.30)
CRP increase (> 0.3 mg/dL), n (%)	10 (23%)
IgG, mg/dL	1723 (1362–2185)
IgG increase (> 1700 mg/dL), n (%)	21 (41.8%)
IgG4, mg/dL	290 (204–578)
IgG4 increase (> 135 mg/dL), n (%)	37 (86%)
IgE, IU/mL	515 (311–1254)
IgE increase (> 320 IU/mL), n (%)	20 (46.5%)
WBC, /μl	5300 (4500–6600)
WBC increase (> 8500 /μL), n(%)	2 (5%)
Eosinophil, /μl	213 (110–281)
Eosinophil increase (> 5% of WBC count), n (%)	7 (16.3%)
Relapse, n (%)	15/42 (36%)

IL-6: Interleukin-6, CRP: C-reactive protein, WBC: White blood cells

Continuous data values are presented as the median (interquartile range).