Change from Baseline in Lupus Quality of Life (QoL) Questionnaire Score
Change from Baseline in Medical Outcomes Short Form-36 Questionnaire Score
Change from Baseline in Patient-Reported Outcome Measurement Information System Fatigue Short Form 7a Instrument (PROMIS Fatigue SF 7A) Fatigue Score
Week 8
Cutaneous Lupus Erythematosus Area and Severity Index (CLASI) Activity Score ≥ 50% Improvement from Baseline at Week 8, 12, 24, 36, and 52 in Participants with a CLASI Activity Score ≥ 8 at Baseline
Tender and Swollen Joint Count ≥ 50% Improvement from Baseline at Weeks 8, 12, 24, 36, and 52 in Participants with ≥ 6 Tender and Swollen Joints Involving the Hands and Wrists at Baseline
Up to Week 52
Trough Serum and Sparse Postdose Serum Concentration of Efavaleukin Alfa
Up to Week 56
Number of Participants who Experience a Clinically Significant Change in Laboratory Values and Vital Sign Measurements
Number of Participants who Experience a Treatment-Emergent Adverse Event (AE) and Serious Adverse Event (SAE)
Week 24
Percent of Participants Achieving a Systemic Lupus Erythematosus Responder Index-4 (SRI-4) Response at Week 24
Week 52
Percent of Participants Achieving a British Isles Lupus Assessment Group Based Composite Lupus Assessment (BICLA) Response at Week 24 and Week 52
Percent of Participants Achieving a Hybrid Systemic Lupus Erythematosus Disease Activity Index (hSLEDAI) Response at Week 24 and Week 52
Week 52
Percent of Participants Achieving a Lupus Low Disease Activity State (LLDAS) Response at Week 52
Percent of Participants Achieving a Systemic Lupus Erythematosus Responder Index-4 (SRI-4) Response at Week 52
Percent of Participants who Experience a Flare
Percent of Participants with a Reduction of Oral Corticosteroid (OCS) to Less Than or Equal to 7.5 mg/day by Week 44 and Sustained Through Week 52 in Participants with a Baseline OCS Dose ≥ 10 mg/day
Efavaleukin Alfa Dose Level Two + Standard of Care
1 of 4
Efavaleukin Alfa Dose Level Three + Standard of Care
1 of 4
Efavaleukin Alfa Dose Level One + Standard of Care
1 of 4
Placebo + Standard of Care
1 of 4
Experimental Treatment
Non-Treatment Group
320 Total Participants · 4 Treatment Groups
Primary Treatment: Efavaleukin Alfa · Has Placebo Group · Phase 2
Efavaleukin Alfa Dose Level Two + Standard of CareExperimental Group · 2 Interventions: Efavaleukin Alfa, Standard of Care · Intervention Types: Drug, Other
Efavaleukin Alfa Dose Level Three + Standard of CareExperimental Group · 2 Interventions: Efavaleukin Alfa, Standard of Care · Intervention Types: Drug, Other
Efavaleukin Alfa Dose Level One + Standard of CareExperimental Group · 2 Interventions: Efavaleukin Alfa, Standard of Care · Intervention Types: Drug, Other
Placebo + Standard of CarePlaceboComparator Group · 2 Interventions: Placebo, Standard of Care · Intervention Types: Drug, Other
744 Patients Enrolled for Systemic Lupus Erythematosus (SLE)
Eligibility Criteria
Age 18 - 75 · All Participants · 9 Total Inclusion Criteria
Mark “Yes” if the following statements are true for you:
You have provided informed consent prior to study participation.
You have at least 1 A item or 2 B items.
You are taking hydroxychloroquine, chloroquine, quinacrine, mycophenolate mofetil, azathioprine, methotrexate, dapsone, or oral calcineurin inhibitors, or OCS
You have active disease as indicated by clinical hSLEDAI score ≥ 4 must be observed.