Table 1.

Clinical and laboratory data of patients with SSc

Age (years), mean ± SD	46 ± 11.4
Gender
Female	39
Male	15
Disease subset
Limited SSc	38
Diffuse SSc	16
Laboratory findings
Anti-topoisomerase	30 (57.7%)
Anti-centromere antibody	10 (20.0%)
Anti-U1RNP antibody	10 (19.6%)
Anti-RNA polymerase antibody	1 (2.0%)
Lung involvement	38 (80.8%)