Table 1 Clinical and demographic characteristics of the SSc patients.

Age—years, mean (SD)51.32 (12.82)
Sex—n, % female61, 77.2%
Race—n, %55, 69.6% Caucasian
18, 22.8% African American
5, 6.3% Asian
Disease duration—years,
mean (SD)
5.6 (4.9)
Scleroderma subtype
n, % diffuse
n, % limited
62, 78.5%
13, 16.5%
MRSS—mean (SD)16.4 (11)
Autoantibody n, % Scl70
n, % RNA polymerase 3
n, % centromere
n, % RNP
28, 35.4% Scl70
21, 26.6% POL3
11, 13.9% CENB
4, 5.06% RNP
Interstitial lung disease
present—n, %
43, 54.4%
Pulmonary hypertension
present—n, %
8, 10.1%