A Study of Nipocalimab in Adults With Moderate to Severe Systemic Lupus Erythematosus

Open to people ages 18-75

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• Medically stable on the basis of physical examination, medical history, vital signs and 12-lead electrocardiogram (ECG) performed at screening
• Clinical diagnosis of systemic lupus erythematosus (SLE) for more than or equal to (>=) 24 weeks prior to screening and meeting european league against rheumatism/american college of rheumatology (EULAR/ACR) classification criteria
• Must have a systemic lupus erythematosus disease activity index 2000 (SLEDAI-2K) score >= 6 and a clinical SLEDAI-2K >= 4 at screening, AND a clinical SLEDAI-2K score >= 4 points at Week 0. For eligibility, points attributed to "lupus headache," "alopecia," and "organic brain syndrome" are excluded
• Participants of childbearing potential must have a negative serum beta human chorionic gonadotropin (β-hCG) test at screening and a negative urine (β- hCG) test at Week 0 prior to randomization
• Has at least 1 BILAG-2004 A score or 2 BILAG-2004 B scores observed at screening

• History of severe, progressive and/or uncontrolled hepatic, gastrointestinal, renal, pulmonary, cardiovascular, psychiatric, neurological or musculoskeletal disorder, hypertension, and/or any other medical or uncontrolled autoimmune disorder (s) or clinically significant abnormalities in screening laboratory
• Any unstable or progressive manifestation of SLE that is likely to warrant escalation in therapy beyond permitted background medications
• Confirmed or suspected clinical immunodeficiency syndrome not related to treatment of SLE or has a family history of congenital or hereditary immunodeficiency unless confirmed absent in the participant
• Has shown a previous severe immediate hypersensitivity reaction, such as anaphylaxis, to therapeutic proteins
• Suspected or known allergies, hypersensitivity, or intolerance to nipocalimab or its excipients, or excipients used in the placebo formulation