Table 1: Characteristics of clinical subjects and healthy controls.

Clinical characteristicsControls (n=19)SSc (n=18)

Age (Mean ± SD)39.8 ± 6.546.2 ± 12.4
Sex (M/F)5/147/11
Disease duration (months)NA48.7 ± 37.3
Organ involvement
 Interstitial lung diseaseNA10
 PAHNA1
 Raynaud’s phenomenaNA16
 Gastrointestinal involvementNA9
 Digital ulcerNA5
Serological characteristics
 Anti-Scl-70NA12
 Anti-RNPNA4
 Anti-ANANA16
 Anti-dsDNANA0
 Anti-Jo-1NA0
 Anti-SmNA0
 Anti-SSaNA4
 Anti-SSbNA0
 Anti-ANCANA1
Medications
 PrednisoneNA17
 CyclophosphamideNA7