Is aged ≥18 years and the local legal age of consent for clinical studies
Has diffuse or limited SSc diagnosis and fulfills the 2013 ACR/EULAR classification criteria
Has a positive antinuclear antibodies (ANA) test result at the central laboratory with titer of at least 1:160
Has a Health Assessment Questionnaire-Disability Index (HAQ-DI) score of at least 0.5 OR a Patient Global Assessment (PGA) score of at least 3
Has a modified Rodnan Skin Score (mRSS) score between 15 and 35
The participant is anti-RNA polymerase III autoantibody negative at central laboratory and had the first non-Raynaud's phenomenon manifestation less than 5 years before screening or the participant is anti-RNA polymerase III autoantibody positive at central laboratory and had the first non-Raynaud's phenomenon manifestation less than 2 years before screening
Has uninvolved or mildly thickened skin area in at least 1 injection site
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Isolated anticentromere antibodies (ACA) seropositivity at the central laboratory
Significant Pulmonary Arterial Hypertension
Severe digital vasculopathy within the past 3 months
Skin thickening due to scleroderma mimics or localized scleroderma
Scleroderma renal crisis within the past 6 months of participating to the study
Another rheumatic autoimmune disease, except for secondary Sjögren's syndrome or fibromyalgia
