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Table 3 Clinical manifestations of African American versus Caucasian patients with anti-topo I

From: Frequent coexistence of anti-topoisomerase I and anti-U1RNP autoantibodies in African American patients associated with mild skin involvement: a retrospective clinical study

 

Caucasian

(n= 15)

African American

(n= 8)

P

Age (yr, mean ± SD)

56.5 ± 11.5

45.9 ± 13.2

 

Male

20%

38%

 

Anti-U1RNP

13%

50%

0.13

Anti-Sm

0

25%

 

Proximal scleroderma

87%

38%

0.03

No skin changes

7%

38%

0.03a

Sclerodactyly only

7%

25%

 

Pitting scar

80%

88%

 

ILD

73%

75%

 

Scleroderma kidney

20%

0

 

Overlap with SLE

0

38%

0.03

Elevated CPK

7%

50%

0.03

Overlap with PM/DM

0

25%

0.05

  1. aNo skin changes and sclerodactyly combined. CPK, creatine phosphokinase; ILD, interstitial lung disease. P values are with the Fisher Exact test.