Table 1.

Demographic and clinical characteristics of patients with early diffuse cutaneous systemic sclerosis (SSc) and individuals serving as healthy controls enrolled for collection of serum samples.

Characteristics	SSc Patients (n = 8)	Healthy Controls (n = 8)
Mean age, years (range)	38.5 (22–53)	38.9 (23–55)
Gender, male/female, n	0/8	0/8
Mean disease duration, months (range)	14.7 (9–22)	–
Autoantibody positivity, n
Antinuclear	8	–
Anti-topoisomerase I	6	–
Nailfold videocapillaroscopy pattern, n
Early	3	–
Active	5	–
Late	0	–
Mean modified Rodnan skin score, (range)	15.0 (10–21)	–
Interstitial lung disease a, n	2	–

^a Determined by thoracic, high-resolution computer tomography.