Table 1 Baseline clinical characteristics of 107 patients with IgG4-related disease.

From: Serum IgG4 levels at diagnosis can predict unfavorable outcomes of untreated patients with IgG4-related disease

 

Overall

Treatment

n = 107

(−)

(+)

P value*

n = 27

n = 80

Age

67 (59, 73)

70 (60, 78)

66 (59, 72)

0.144

Male gender (%)

68

78

65

0.243

Allergy (%)

56

70

51

0.116

Serum IgG4 level (mg/dL)

486 (220, 991)

361 (187, 1,040)

495 (254, 975)

0.507

Serum IgG level (mg/dL)

1951 (1531, 2872)

1960 (1512, 2655)

1950 (1535, 2936)

0.637

Serum IgE level (IU/mL)

486 (190, 1231)

755 (122, 1764)

474 (235, 1036)

0.670

Serum IgG4/IgE ratio

0.99 (0.38, 3.24)

0.54 (0.22, 4.28)

1.11 (0.40, 3.15)

0.494

Serum C3 level (mg/dL)

90 (76, 110)

90 (76, 106)

94 (76, 110)

0.810

Serum C4 level (mg/dL)

22 (14, 27)

22 (19, 28)

21 (14, 27)

0.363

Serum CH50 level (IU/L)

51 (38, 58)

50 (39, 56)

51 (35, 59)

0.976

Serum CRP level (mg/dL)

0.1 (0.0, 0.3)

0.1 (0.0, 0.2)

0.1 (0.0, 0.3)

0.599

Serum creatinine level (mg/dL)

0.79 (0.64, 1.00)

0.75 (0.65, 0.94)

0.80 (0.60, 1.05)

0.415

Eosinophil count (/μL)

204 (118, 426)

180 (119, 598)

230 (118, 422)

0.766

RF positivity (%)

20

17

21

0.772

ANA positivity (%)

14

11

15

0.755

Pancreatic lesion (%)

26

19

29

0.448

Salivary gland lesion (%)

58

67

55

0.369

Ophthalmic lesion (%)

47

26

54

0.015

Renal lesion (%)

21

4

26

0.012

Vascular lesion (%)

27

30

26

0.804

Retroperitoneal lesion (%)

8

4

10

0.444

Lung lesion (%)

25

11

30

0.072

Number of involved organs

2 (1, 4)

1 (1, 3)

3 (2, 4)

0.001

IgG4-RD responder index

12 (9, 18)

9 (6, 15)

12 (9, 18)

0.048

  1. Conversion factor for Cr: mg/dL to μmol/L, × 88.4. Data are presented as median [interquartile range (IQR1, IQR3)]. *Treatment (+) versus Treatment (−).
  2. ANA anti-nuclear antibody, CRP C-reactive protein, IgG immunoglobulin G, IgG4 immunoglobulin G4, IgG4-RD immunoglobulin G4-related disease, IgE immunoglobulin E, PSL prednisolone, RF rheumatoid factor.