Phase 2 Safety and Efficacy Study of Tulisokibart (MK-7240/PRA023) in Subjects With Systemic Sclerosis Associated With Interstitial Lung Disease (SSc-ILD) (MK-7240-007)

The purpose of this study is to assess the safety and efficacy of tulisokibart in participants with SSc-ILD.

Inclusion Criteria: * Has confirmed diagnosis of systemic sclerosis with onset of disease ≤ 5 years ago. * Has diffuse cutaneous scleroderma * Has systemic sclerosis related interstitial lung disease confirmed by HRCT * FVC ≥ 45% of predicted normal * Diffusing capacity of lung for carbon monoxide (DLCO)≥ 45% of predicted normal * If on background therapy, meets stable dosing requirements for nintedanib, mycophenolate mofetil (MMF), methotrexate (MTX) OR azathioprine, and corticosteroids * Women of childbearing potential are eligible to participate if not pregnant or breastfeeding and either willing to use an acceptable contraceptive method or sexually abstinent * Able to provide written informed consent and understand and comply with the requirements of the study Exclusion Criteria: * Has an airway obstruction per pulmonary function test (PFT) or clinically significant pulmonary arterial hypertension * Has current clinical diagnosis of another inflammatory connective tissue disease * Has any active infections, a serious infection within the past 3 months, or chronic bacterial infection * Is a current smoker or smoking within 6 months of screening * Has any concomitant medical conditions that, in the opinion of the investigator, might place them in unacceptable risk for participation in the study * Meets the protocol criteria for important laboratory exclusion criteria