A Clinical Study to Evaluate Ianalumab in Participants With Diffuse Cutaneous Systemic Sclerosis

Key Inclusion Criteria: * Male and female participants \>= 18 and =\< 70 years (at the time of the screening visit). * Diagnosis of systemic sclerosis, as defined by the 2013 American College of Rheumatology/ European League Against Rheumatism (ACR/EULAR) classification criteria for SSc (van den Hoogen et al 2013) and meet the dcSSc subset classification according to LeRoy (LeRoy 1988) * Disease duration of =\< 60 months (defined as time from the first non-Raynaud phenomenon manifestation, e.g., puffy hands, scleroderma, digital ulcers, arthralgia, dyspnea) * mRSS units of \>= 15 and =\< 45 at the time of the screening visit * Active disease that meets at least one of the following criteria at screening: * Disease duration of =\< 18 months defined as time from the first non-Raynaud phenomenon manifestation * Increase in mRSS of \>= 3 units compared with the most recent assessment performed within the previous 6 months * Involvement of one new body area and an increase in mRSS of \>= 2 units compared with the most recent assessment performed within the previous 6 months * Involvement of two new body areas within the previous 6 months * Elevated acute phase reactants (ESR) \>= 30 mm/hr or high-sensitivity C-reactive protein (hsCRP) \>= 6 mg/L) * Presence of SSc-interstitial lung disease (ILD) and ATA autoantibody positivity * Modified EUSTAR disease activity index (mDAI) ≥ 2.5 * Participant must be positive for at least one of the following autoantibodies: * …