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Table 5 Changes in SDAI scores and circulating biomarkers, stratified by shared epitope (risk allele) status

From: Circulating anti-citrullinated peptide antibodies, cytokines and genotype as biomarkers of response to disease-modifying antirheumatic drug therapy in early rheumatoid arthritis

Risk allele negative

Variable

n

Baseline

6 months

P value

  

Median

IQR

Median

IQR

 

SDAI

47

39.18

23.50

18.00

19.50

0.0001

CRP (μg/ml)

47

18.00

43.60

7.00

14.60

0.0002

ACPA (IU/ml)

40

331.90

1006.60

185.60

654.15

0.0032

IL-4 (pg/ml)

10

2.55

7.99

5.24

7.18

NS

IL-8 (pg/ml)

44

7.68

14.15

5.23

5.98

NS

IL-10 (pg/ml)

10

7.34

27.79

19.18

19.91

NS

G-CSF (pg/ml)

44

14.42

36.94

12.18

81.23

NS

VEGF (pg/ml)

44

130.52

512.22

92.22

148.07

NS

Risk allele positive

Variable

n

Baseline

6 months

P value

  

Median

IQR

Median

IQR

 

SDAI

68

40.04

22.12

16.00

16.52

0.0001

CRP (μg/ml)

68

17.50

38.70

10.10

17.50

0.0005

ACPA (IU/ml)

56

561.10

911.05

277.60

677.80

0.0001

IL-4 (pg/ml)

19

5.00

9.80

1.00

1.50

0.0007

IL-8 (pg/ml)

65

9.49

12.15

5.97

6.20

0.0001

IL-10 (pg/ml)

19

11.24

18.78

5.53

6.52

0.0440

G-CSF (pg/ml)

65

8.66

42.11

1.85

24.74

0.0442

VEGF (pg/ml)

65

190.43

401.81

95.76

160.99

0.0056