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