ACA, anti centromere antibody; RNAPIII, RNA polymerase III; lcSSc,
limited cutaneous systemic sclerosis; mRSS, modified Rodnan skin score;
PAH, pulmonary arterial hypertension; ILD, interstitial lung disease;
GIS, gastrointestinal system; DU, digital ulcer; SRC, scleroderma renal
crisis; ANA, antinuclear antibody
Table 3 . Clinical features of single and multiple antibody
positive patient subgroups within each common SSc specific autoantibody
groups