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Table 1 Baseline characteristics of treatment-naive Japanese SLE patients

From: Relationship of systemic type I interferon activity with clinical phenotypes, disease activity, and damage accrual in systemic lupus erythematosus in treatment-naive patients: a retrospective longitudinal analysis

n = 40 patients

 

Female, n (%)

37 (93)

Age of onset, median (IQR), years

31 (24–43)

Observation period, median (IQR), years

7.1 (2.8–9.6)

Numbers of ACR-1997 criteria domains, median (IQR), n

5 (4–6)

ACR-1997 criteria domains, n (%)

 Malar rash

19 (48)

 Discoid rash

6 (15)

 Photosensitivity

11 (28)

 Oral ulcer

6 (15)

 Arthritis

24 (60)

 Serositis

8 (20)

 Renal disorder

17 (43)

 Neurologic disorder

3 (8)

 Hematologic disorder

35 (88)

 Immunologic disorder

40 (100)

 ANA positive

40 (100)

Auto-antibody profile, n (%)

 Anti-dsDNA positive

36 (90)

 Anti-U1-RNP positive

24 (60)

 Anti-Sm positive

17 (43)

 Anti-Ro/SS-A positive

27 (68)

 Anti-La/SS-B positive

9 (23)

 Lupus anticoagulant positive

12 (30)

 Anti-cardiolipin positive

19 (48)

C3, median (IQR), mg/dl

42.5 (28.5–61.8)

C4, median (IQR), mg/dl

5.5 (3.3–11.8)

SLEDAI-2K, median (IQR), score

11 (8–16)

Induction dose of prednisolone, median (IQR), mg/day

40 (30–50)

Methylprednisolone pulse, n (%)

3 (8)

IVCY, n (%)

8 (20)

MMF, n (%)

7 (18)

HCQ, n (%)

5 (13)

CNIs, n (%)

4 (10)

  1. ACR-1997 criteria American College of Rheumatology 1997 revised classification criteria for SLE, ANA antinuclear antibody, C3/4 complement component 3/4, CNIs calcineurin inhibitors, dsDNA double-stranded DNA, HCQ hydroxychloroquine, IVCY intravenous cyclophosphamide, MMF mycophenolate mofetil, RNP ribonucleoprotein, SLE systemic lupus erythematosus, SLEDAI-2K SLE Disease Activity Index 2000, Sm Smith