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Efficacy and Safety of Efavaleukin Alfa in Subjects With Active Systemic Lupus Erythematosus

A Phase 2b Dose Ranging Study to Evaluate the Efficacy and Safety of Efavaleukin Alfa in Subjects With Active Systemic Lupus Erythematosus With Inadequate Response to Standard of Care Therapy

Status
Terminated
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04680637
Enrollment
168
Registered
2020-12-23
Start date
2021-05-06
Completion date
2023-05-22
Last updated
2024-06-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Active Systemic Lupus Erythematosus

Brief summary

The primary objective is to evaluate the efficacy and safety of efavaleukin alfa in subjects with active systemic lupus erythematosus.

Interventions

Administered as a subcutaneous (SC) injection.

DRUGPlacebo

Administered as a subcutaneous (SC) injection.

OTHERStandard of Care

Standard of care procedures and therapies for managing active systemic lupus erythematosus will be carried out according to each investigator's standard procedures.

Sponsors

Amgen
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

* Participant has provided informed consent prior to initiation of any study specific activities/procedures. * Participant is aged between 18 and 75. * Fulfills classification criteria for systemic lupus erythematosus (SLE) according to the 2019 European League Against Rheumatism (EULAR)/American College of Rheumatology (ACR) classification criteria for SLE with antinuclear antibody ≥ 1:80 by immunofluorescence on Hep-2 cells being present at screening. * Hybrid SLEDAI score ≥ 6 points with a Clinical hSLEDAI score ≥ 4 points. The Clinical hSLEDAI is the hSLEDAI assessment score without the inclusion of points attributable to laboratory results, including urine or immunologic parameters. * British-Isles Lupus Assessment Group (BILAG) index score (BILAG 2004) of ≥ 1 A item or ≥ 2 B items. * Must be taking ≥ 1 of the following SLE treatments (or regional equivalent): hydroxychloroquine, chloroquine, quinacrine, mycophenolate mofetil, azathioprine, methotrexate, dapsone, or oral calcineurin inhibitors, or OCS. A participant may enter the study on OCS alone (prednisone ≥ 10 mg/day or equivalent) only if the participant has previously documented trial of anti-malarial or immunosuppressant treatment for SLE. Participants must be on a stable dose for ≥ 8 weeks prior to screening for all antimalarials and immunosuppressants, with the exception of OCS doses which must be stable for ≥ 2 weeks prior to screening. * For participants taking OCS, dose must be ≤ 20 mg/day of prednisone or OCS equivalent, and the dose must be stable at baseline visit and for ≥ 2 weeks prior to screening visit. * Stability of SLE treatments: OCS and other immunosuppressants/immunomodulator agents and doses must be stable since screening visit. * Disease activity: active disease as indicated by clinical hSLEDAI score ≥ 4 must be observed (clinical hSLEDAI score is the hSLEDAI assessment score without the inclusion of points attributable to laboratory results including urine and immunologic parameters).

Exclusion criteria

* Lupus nephritis if any of the following are present: urine protein creatinine ratio ≥ 2000 mg/g (or equivalent) at screening, OR requiring induction therapy currently or within 1 year prior to screening, OR histological evidence (if available) of diffuse proliferative glomerulonephritis within 12 weeks prior to screening. * Active CNS lupus within 1 year prior to screening including, but not limited to, aseptic meningitis, ataxia, CNS vasculitis, cranial neuropathy, demyelinating syndrome, optic neuritis, psychosis, seizures, or transverse myelitis. * Currently present or within 1 year prior to screening a diagnosis of any chronic inflammatory disease other than SLE (eg, rheumatoid arthritis) which would interfere with SLE disease assessment. * History of any disease other than SLE that has required treatment with oral or parenteral corticosteroids for \> 2 weeks within 4 months prior to screening. * Active infection (including chronic or localized infections) for which anti-infectives are indicated currently or within 4 weeks prior to screening visit OR presence of serious infection, defined as requiring hospitalization or intravenous anti-infectives within 8 weeks prior to screening visit. * Active tuberculosis or latent tuberculosis with no documented past history of adequate treatment per local standard of care. * Positive test for tuberculosis during creening defined as: either a positive or indeterminate QuantiFERON®-TB or T-spot test OR positive purified protein derivative (PPD) (≥5 mm of induration at 48 to 72 hours after test is placed). * Positive for hepatitis B surface antigen (HBsAg); or positive for hepatitis B core antibody (HBcAb). A history of hepatitis B vaccination without history of hepatitis B infection (ie, positive hepatitis B surface antibody (HBsAb), negative HBsAg and negative HBcAb) is allowed. * Positive for hepatitis C antibody. * Known history of HIV or positive HIV test at screening. * Presence of 1 or more significant concurrent medical conditions, including but not limited to the following: * poorly controlled diabetes (hemoglobin A1C \> 7) or hypertension * symptomatic heart failure (New York Heart Association class III or IV) * myocardial infarction or unstable angina pectoris within the past 12 months prior to screening * severe chronic pulmonary disease requiring oxygen therapy * multiple sclerosis or any other demyelinating disease * Any history of malignancy with the following exceptions: * resolved non-melanoma skin cancers \> 5 years prior to screening * resolved cervical carcinoma \> 5 years prior to screening * resolved breast ductal carcinoma in situ \> 5 years of screening * Currently receiving or had treatment with: cyclophosphamide, chlorambucil, nitrogen mustard, or any other alkylating agent within 6 months prior to screening or sirolimus within 4 weeks prior screening. * Currently receiving or had treatment with a Janus kinase (JAK) inhibitor within 3 months or less than 5 drug half-lives (whichever is longer) prior to screening. * Currently receiving or had treatment with an immune checkpoint inhibitor (eg, programmed death 1 \[PD-1\] inhibitor, programmed death ligand 1 \[PD-L1\] inhibitor, cytotoxic T-lymphocyte associated protein 4 \[CTLA-4\] inhibitor). Note: Abatacept is not considered a CTLA-4 inhibitor and is referred to below. * Currently receiving or had treatment within 12 months prior to screening with T-cell depleting agents (eg, antithymocyte globulin, Campath). * Currently receiving of had treatment with an interleukin 2 (IL-2) based therapy (eg, Proleukin). * Current or previous treatment with a biologic agent with immunosuppressive/immunomodulatory activity as follows: rituximab within 6 months prior to screening; abatacept and belimumab within the past 3 months prior to screening; other biologics within \< 5 drug half lives prior to screening. * Participants who have received intraarticular, intralesional, or intramuscular corticosteroids within 2 weeks prior to screening or intravenous corticosteroids within 6 weeks prior to screening. * Participants who have received live vaccines within 5 weeks prior to screening, or plan to receive live vaccines during the treatment period and up to 6 weeks after the end of treatment period in the study. * Currently receiving treatment in another investigational device or drug study. * Ending a treatment with an investigational drug or investigational device less than 3 months or 5 half-lives from the last dose of the investigational drug (whichever is longer) at screening.

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants Who Achieved a Systemic Lupus Erythematosus Responder Index 4 (SRI-4) Response at Week 52Week 52A participant achieved an SRI-4 response if all the following criteria were met: * ≥ 4-point reduction from baseline in Hybrid Systemic Lupus Erythematosus Disease Activity Index (hSLEDAI) score (scale 0-105, with higher scores indicating more disease activity). * No new British-Isles Lupus Assessment Group (BILAG) A score and no \> 1 new BILAG B organ domain scores compared with baseline. The BILAG index evaluates disease activity in 9 separate organ systems. Each of the organ systems are allocated an alphabetical score of A (most active), B (moderate activity), C (minor activity), D (stable) or E (never present). * \< 0.3-points deterioration from baseline in Physician Global Assessment (PGA) visual analogue (VAS) score (scale 0 to 3, with higher scores indicating more severe disease). Participants were considered non-responders for using more than protocol-permitted therapies.

Secondary

MeasureTime frameDescription
Number of Participants Who Achieved a BILAG-based Composite Lupus Assessment (BICLA) Response at Week 52Week 52A participant achieved a BICLA response if all the following criteria were met: * At least 1 gradation of improvement in baseline BILAG domain scores in all body systems with moderate or severe disease activity at entry and no \> 1 BILAG B domain scores compared with baseline. The BILAG index evaluates disease activity in 9 separate organ systems. Each of the organ systems are allocated an alphabetical score of A (most active), B (moderate activity), C (minor activity), D (stable) or E (never present). * No worsening of the hSLEDAI score from baseline (scale 0-105, with higher scores indicating more disease activity). * \< 0.3-points deterioration from baseline in PGA VAS (scale 0 to 3, with higher scores indicating more severe disease). * No initiation of non-protocol treatment.
Number of Participants Who Achieved a Lupus Low Disease Activity State (LLDAS) Response at Week 52Week 52A participant achieved an LLDAS response if all the following criteria were met: * hSLEDAI ≤ 4 (scale 0-105, higher scores indicating more disease activity) with no activity in major organ systems (renal \[proteinuria, hematuria, pyuria, urinary casts\], central nervous system \[seizure, psychosis, organic brain syndrome, cranial nerve disorder, cerebrovascular accident\], cardiopulmonary \[pericarditis, pleurisy\], vasculitis and fever) & no hemolytic anemia or gastrointestinal activity in BILAG. The BILAG index evaluates disease activity in 9 separate organ systems. Each of the organ systems are allocated an alphabetical score of A (most active) to E (never present). * No new lupus disease activity compared with previous assessment defined as no new descriptor scores in hSLEDAI. * A score of \< 1 in PGA VAS score (scale 0 to 3, with higher scores indicating more severe disease). * Current prednisolone dose ≤ 7.5 mg daily. * No increase or initiation of immunosuppressive drugs.
Number of Participants With a Reduction of Oral Corticosteroids (OCS) to ≤ 7.5 mg/Day by Week 44 and Sustained Through Week 52 in Participants With a Baseline OCS Dose ≥ 10 mg/DayBaseline to Week 52Participants taking OCS could begin tapering OCS after the Week 12 assessment up to the Week 44 assessment with initiation of tapering based upon clinical judgement of the treating physician. The tapering schedule was at the discretion of the investigator but should not have been tapered more than 20% of the prior dose per week. Tapering OCS before Week 12 was not encouraged but may have been allowed based upon investigator's judgement. Between weeks 44 and 52, the OCS dosing must again have remained stable.
Number of Participants Who Achieved a SRI-4 Response at Week 24Week 24A participant achieved an SRI-4 response if all the following criteria were met: * ≥ 4-point reduction from baseline in hSLEDAI score (scale 0-105, with higher scores indicating more disease activity). * No new BILAG A score and no \> 1 new BILAG B organ domain scores compared with baseline. The BILAG index evaluates disease activity in 9 separate organ systems. Each of the organ systems are allocated an alphabetical score of A (most active), B (moderate activity), C (minor activity), D (stable) or E (never present). * \< 0.3-points deterioration from baseline in PGA VAS score (scale 0 to 3, with higher scores indicating more severe disease). Participants were considered non-responders for using more than protocol-permitted therapies.
Number of Participants Who Achieved a BICLA Response at Week 24Week 24A participant achieved a BICLA response if all the following criteria were met: * At least 1 gradation of improvement in baseline BILAG domain scores in all body systems with moderate or severe disease activity at entry and no \> 1 BILAG B domain scores compared with baseline. The BILAG index evaluates disease activity in 9 separate organ systems. Each of the organ systems are allocated an alphabetical score of A (most active), B (moderate activity), C (minor activity), D (stable) or E (never present). * No worsening of the hSLEDAI score from baseline (scale 0-105, with higher scores indicating more disease activity). * \< 0.3-points deterioration from baseline in PGA VAS (scale 0 to 3, with higher scores indicating more severe disease). * No initiation of non-protocol treatment.
Number of Participants With a hSLEDAI Response at Week 24 and Week 52Week 24 and Week 52The hSLEDAI is a global index that evaluates disease activity and includes both laboratory and clinical parameters. The score ranges from 0 to 105, with higher scores indicating more disease activity. A participant achieved a hSLEDAI response if there was a ≥ 4-point reduction in hSLEDAI from baseline.
Number of Participants With an Improvement From Baseline in Tender and Swollen Joint Count ≥ 50% at Weeks 8, 12, 24, 36, and 52 in Participants With ≥ 6 Tender and Swollen Joints in Hands and WristsWeeks 8, 12, 24, 36 and 52The swollen and tender join count assessments were performed at the site by an experienced independent and blinded joint evaluator. Joints in hands and wrists were scored for the simultaneous presence (1) or absence (0) of swelling and tenderness. Scores ranged from 0-28. A higher score indicates more severe disease.
Number of Participants With an Improvement From Baseline in Cutaneous Lupus Erythematosus Area and Severity Index (CLASI) Activity Score ≥ 50% at Week 8, 12, 24, 36, and 52 in Participants With a CLASI Activity Score ≥ 8 at BaselineWeeks 8, 12, 24, 36 and 52The CLASI consists of 2 scores, the first summarizes the activity of the disease while the second is a measure of the damage done by the disease. Activity is scored based on erythema, scale/hyperkeratosis, mucous membrane involvement, acute hair loss and non-scarring alopecia. The total score ranges from 0-70, with higher scores indicating more severe disease.
Annualized Flare Rate Over 52 WeeksUp to 52 weeksA flare was defined as a BILAG score designation of worse or new resulting in a B score in ≥ 2 organs or an A score in ≥ 1 organ. The BILAG index evaluates disease activity in 9 separate organ systems. Each of the organ systems are allocated an alphabetical score of A (most active), B (moderate activity), C (minor activity), D (stable) or E (never present). The annualized flare rate was calculated as the number of flares divided by the flare exposure time in days multiplied by 365.25.
Change From Baseline in Fatigue Standardized Score Using the Patient-Reported Outcome Measurement Information System (PROMIS) Fatigue Short Form (SF) 7a Instrument at Week 12, 24, 36 and 52Baseline to Week 12, 24, 36 and 52The PROMIS Fatigue SF 7a assesses the experience of fatigue as well as its impact on physical, mental and social activities. The score ranges from 7 to 35, with higher scores indicating more fatigue. A negative change from baseline indicates a reduction in fatigue. Efficacy data collected after the study termination decision date were censored and excluded from analyses for that particular visit.
Change From Baseline in the Physical Component Score of the Medical Outcomes Short Form-36 Questionnaire Version 2 (SF-36V2) at Week 12, 24, 36 and 52Baseline to Week 12, 24, 36 and 52The SF-36v2 contains 36 items and yields assessments of 8 domains of health-related quality of life: 1. Limitations in physical activities because of health problems. 2. Limitations in social activities because of physical or emotional problems. 3. Limitations in usual role activities because of physical health problems. 4. Bodily pain. 5. General mental health (psychological distress and well-being). 6. Limitations in usual role activities because of emotional problems. 7. Vitality (energy and fatigue). 8. General health perceptions. The scores from the 8 domains will be evaluated independently and aggregated into 2 norm-based summary component measures of physical and mental health. The recall period is the past 7 days. The score ranges from 0-100 for the summary components and for each domain, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.
Change From Baseline in the Mental Component Score of the SF-36V2 at Week 12, 24, 36 and 52Baseline to Week 12, 24, 36 and 52The SF-36v2 contains 36 items and yields assessments of 8 domains of health-related quality of life: 1. Limitations in physical activities because of health problems. 2. Limitations in social activities because of physical or emotional problems. 3. Limitations in usual role activities because of physical health problems. 4. Bodily pain. 5. General mental health (psychological distress and well-being). 6. Limitations in usual role activities because of emotional problems. 7. Vitality (energy and fatigue). 8. General health perceptions. The scores from the 8 domains will be evaluated independently and aggregated into 2 norm-based summary component measures of physical and mental health. The recall period is the past 7 days. The score ranges from 0-100 for the summary components and for each domain, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.
Change From Baseline in the Physical Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Baseline to Week 12, 24, 36 and 52The SF-36v2 contains 36 items and yields assessments of 8 domains of health-related quality of life: 1. Limitations in physical activities because of health problems. 2. Limitations in social activities because of physical or emotional problems. 3. Limitations in usual role activities because of physical health problems. 4. Bodily pain. 5. General mental health (psychological distress and well-being). 6. Limitations in usual role activities because of emotional problems. 7. Vitality (energy and fatigue). 8. General health perceptions. The scores from the 8 domains will be evaluated independently and aggregated into 2 norm-based summary component measures of physical and mental health. The recall period is the past 7 days. The score ranges from 0-100 for the summary components and for each domain, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.
Change From Baseline in the Social Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Baseline to Week 12, 24, 36 and 52The SF-36v2 contains 36 items and yields assessments of 8 domains of health-related quality of life: 1. Limitations in physical activities because of health problems. 2. Limitations in social activities because of physical or emotional problems. 3. Limitations in usual role activities because of physical health problems. 4. Bodily pain. 5. General mental health (psychological distress and well-being). 6. Limitations in usual role activities because of emotional problems. 7. Vitality (energy and fatigue). 8. General health perceptions. The scores from the 8 domains will be evaluated independently and aggregated into 2 norm-based summary component measures of physical and mental health. The recall period is the past 7 days. The score ranges from 0-100 for the summary components and for each domain, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.
Change From Baseline in the Physical Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Baseline to Week 12, 24, 36 and 52The SF-36v2 contains 36 items and yields assessments of 8 domains of health-related quality of life: 1. Limitations in physical activities because of health problems. 2. Limitations in social activities because of physical or emotional problems. 3. Limitations in usual role activities because of physical health problems. 4. Bodily pain. 5. General mental health (psychological distress and well-being). 6. Limitations in usual role activities because of emotional problems. 7. Vitality (energy and fatigue). 8. General health perceptions. The scores from the 8 domains will be evaluated independently and aggregated into 2 norm-based summary component measures of physical and mental health. The recall period is the past 7 days. The score ranges from 0-100 for the summary components and for each domain, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.
Change From Baseline in the Bodily Pain Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Baseline to Week 12, 24, 36 and 52The SF-36v2 contains 36 items and yields assessments of 8 domains of health-related quality of life: 1. Limitations in physical activities because of health problems. 2. Limitations in social activities because of physical or emotional problems. 3. Limitations in usual role activities because of physical health problems. 4. Bodily pain. 5. General mental health (psychological distress and well-being). 6. Limitations in usual role activities because of emotional problems. 7. Vitality (energy and fatigue). 8. General health perceptions. The scores from the 8 domains will be evaluated independently and aggregated into 2 norm-based summary component measures of physical and mental health. The recall period is the past 7 days. The score ranges from 0-100 for the summary components and for each domain, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.
Change From Baseline in the Mental Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Baseline to Week 12, 24, 36 and 52The SF-36v2 contains 36 items and yields assessments of 8 domains of health-related quality of life: 1. Limitations in physical activities because of health problems. 2. Limitations in social activities because of physical or emotional problems. 3. Limitations in usual role activities because of physical health problems. 4. Bodily pain. 5. General mental health (psychological distress and well-being). 6. Limitations in usual role activities because of emotional problems. 7. Vitality (energy and fatigue). 8. General health perceptions. The scores from the 8 domains will be evaluated independently and aggregated into 2 norm-based summary component measures of physical and mental health. The recall period is the past 7 days. The score ranges from 0-100 for the summary components and for each domain, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.
Change From Baseline in the Emotional Role Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Baseline to Week 12, 24, 36 and 52The SF-36v2 contains 36 items and yields assessments of 8 domains of health-related quality of life: 1. Limitations in physical activities because of health problems. 2. Limitations in social activities because of physical or emotional problems. 3. Limitations in usual role activities because of physical health problems. 4. Bodily pain. 5. General mental health (psychological distress and well-being). 6. Limitations in usual role activities because of emotional problems. 7. Vitality (energy and fatigue). 8. General health perceptions. The scores from the 8 domains will be evaluated independently and aggregated into 2 norm-based summary component measures of physical and mental health. The recall period is the past 7 days. The score ranges from 0-100 for the summary components and for each domain, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.
Change From Baseline in the Vitality Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Baseline to Week 12, 24, 36 and 52The SF-36v2 contains 36 items and yields assessments of 8 domains of health-related quality of life: 1. Limitations in physical activities because of health problems. 2. Limitations in social activities because of physical or emotional problems. 3. Limitations in usual role activities because of physical health problems. 4. Bodily pain. 5. General mental health (psychological distress and well-being). 6. Limitations in usual role activities because of emotional problems. 7. Vitality (energy and fatigue). 8. General health perceptions. The scores from the 8 domains will be evaluated independently and aggregated into 2 norm-based summary component measures of physical and mental health. The recall period is the past 7 days. The score ranges from 0-100 for the summary components and for each domain, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.
Change From Baseline in the General Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Baseline to Week 12, 24, 36 and 52The SF-36v2 contains 36 items and yields assessments of 8 domains of health-related quality of life: 1. Limitations in physical activities because of health problems. 2. Limitations in social activities because of physical or emotional problems. 3. Limitations in usual role activities because of physical health problems. 4. Bodily pain. 5. General mental health (psychological distress and well-being). 6. Limitations in usual role activities because of emotional problems. 7. Vitality (energy and fatigue). 8. General health perceptions. The scores from the 8 domains will be evaluated independently and aggregated into 2 norm-based summary component measures of physical and mental health. The recall period is the past 7 days. The score ranges from 0-100 for the summary components and for each domain, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.
Change From Baseline in the Physical Health Domain Score of the Lupus Quality of Life (LupusQoL) at Week 12, 24, 36 and 52Baseline to Week 12, 24, 36 and 52The LupusQoL is a systemic lupus erythematosus (SLE)-specific health-related QoL instrument and consists of 8 domains: 1. Physical health. 2. Pain. 3. Planning. 4. Intimate relationships. 5. Burden to others. 6. Emotional health. 7. Body image. 8. Fatigue. The score for each domain ranges from 0-100, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.
Change From Baseline in the Pain Domain Score of the LupusQoL at Week 12, 24, 36 and 52Baseline to Week 12, 24, 36 and 52The LupusQoL is a SLE-specific health-related QoL instrument and consists of 8 domains: 1. Physical health. 2. Pain. 3. Planning. 4. Intimate relationships. 5. Burden to others. 6. Emotional health. 7. Body image. 8. Fatigue. The score for each domain ranges from 0-100, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.
Change From Baseline in the Planning Domain Score of the LupusQoL at Week 12, 24, 36 and 52Baseline to Week 12, 24, 36 and 52The LupusQoL is a SLE-specific health-related QoL instrument and consists of 8 domains: 1. Physical health. 2. Pain. 3. Planning. 4. Intimate relationships. 5. Burden to others. 6. Emotional health. 7. Body image. 8. Fatigue. The score for each domain ranges from 0-100, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.
Change From Baseline in the Intimate Relationship Domain Score of the LupusQoL at Week 12, 24, 36 and 52Baseline to Week 12, 24, 36 and 52The LupusQoL is a SLE-specific health-related QoL instrument and consists of 8 domains: 1. Physical health. 2. Pain. 3. Planning. 4. Intimate relationships. 5. Burden to others. 6. Emotional health. 7. Body image. 8. Fatigue. The score for each domain ranges from 0-100, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.
Change From Baseline in the Burden to Others Domain Score of the LupusQoL at Week 12, 24, 36 and 52Baseline to Week 12, 24, 36 and 52The LupusQoL is a SLE-specific health-related QoL instrument and consists of 8 domains: 1. Physical health. 2. Pain. 3. Planning. 4. Intimate relationships. 5. Burden to others. 6. Emotional health. 7. Body image. 8. Fatigue. The score for each domain ranges from 0-100, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.
Change From Baseline in the Emotional Health Domain Score of the LupusQoL at Week 12, 24, 36 and 52Baseline to Week 12, 24, 36 and 52The LupusQoL is a SLE-specific health-related QoL instrument and consists of 8 domains: 1. Physical health. 2. Pain. 3. Planning. 4. Intimate relationships. 5. Burden to others. 6. Emotional health. 7. Body image. 8. Fatigue. The score for each domain ranges from 0-100, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.
Change From Baseline in the Body Image Domain Score of the LupusQoL at Week 12, 24, 36 and 52Baseline to Week 12, 24, 36 and 52The LupusQoL is a SLE-specific health-related QoL instrument and consists of 8 domains: 1. Physical health. 2. Pain. 3. Planning. 4. Intimate relationships. 5. Burden to others. 6. Emotional health. 7. Body image. 8. Fatigue. The score for each domain ranges from 0-100, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.
Change From Baseline in the Fatigue Domain Score of the LupusQoL at Week 12, 24, 36 and 52Baseline to Week 12, 24, 36 and 52The LupusQoL is a SLE-specific health-related QoL instrument and consists of 8 domains: 1. Physical health. 2. Pain. 3. Planning. 4. Intimate relationships. 5. Burden to others. 6. Emotional health. 7. Body image. 8. Fatigue. The score for each domain ranges from 0-100, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.
Number of Participants Who Experienced a Treatment-emergent Adverse Event (TEAE)Day 1 to Week 56A TEAE was defined as any untoward medical occurrence in a clinical study participant irrespective of a causal relationship with the study treatment and had emerged or worsened during treatment. A serious TEAE was defined as any untoward medical occurrence that, met at least 1 of the following criteria: * Resulted in death (fatal). * Was immediately life-threatening. * Required in-patient hospitalization or prolongation of existing hospitalization. * Resulted in persistent or significant disability/incapacity. * Was a congenital anomaly/birth defect. * Was any other medically important serious event. Clinically significant changes from baseline in laboratory values and vital signs were also recorded as TEAEs.
Serum Efavaleukin Alfa Concentrations by TimepointDay 1: 6-24 and 48-96 hrs, Day 29, Day 43: 6-24 and 48-96 hrs, Day 85, Day 169, Day 253, Day 309, and Day 365Serum efavaleukin alfa concentrations by timepoint after multiple dose subcutaneous administration of efavaleukin alfa to participants with active systemic lupus erythematosus. Lower limit of quantification= 0.100 ng/mL.

Countries

Austria, Bulgaria, Canada, Chile, Colombia, France, Greece, Hong Kong, Italy, Japan, Mexico, Poland, Russia, South Korea, Spain, Switzerland, Taiwan, Turkey (Türkiye), United States

Participant flow

Recruitment details

Participants were enrolled at 73 centers in 13 countries (Bulgaria, Chile, Colombia, Greece, Italy, Japan, Mexico, Poland, Russian Federation, Spain, Switzerland, Taiwan, and the United States) between 06 May 2021 and 24 May 2023.

Pre-assignment details

A total of 464 participants were screened, of which 168 participants were enrolled and received efavaleukin alfa.

Participants by arm

ArmCount
Placebo
Participants received placebo matching efavaleukin alfa Q2W through a SC injection for up to 52 weeks.
41
Efavaleukin Alfa Low Dose
Participants received low dose efavaleukin alfa Q2W through a SC injection for up to 52 weeks.
35
Efavaleukin Alfa Medium Dose
Participants received medium dose efavaleukin alfa Q2W through a SC injection for up to 52 weeks.
34
Efavaleukin Alfa High Dose
Participants received high dose efavaleukin alfa Q2W through a SC injection for up to 52 weeks.
58
Total168

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003
Overall StudyDeath1000
Overall StudyDecision by Sponsor2115732
Overall StudyLost to Follow-up0101
Overall StudyWithdrawal by Subject7101715

Baseline characteristics

CharacteristicPlaceboTotalEfavaleukin Alfa High DoseEfavaleukin Alfa Medium DoseEfavaleukin Alfa Low Dose
Age, Continuous48.1 years
STANDARD_DEVIATION 10.3
44.1 years
STANDARD_DEVIATION 11.8
42.3 years
STANDARD_DEVIATION 11.2
40.3 years
STANDARD_DEVIATION 12.2
46.1 years
STANDARD_DEVIATION 12.8
Ethnicity (NIH/OMB)
Hispanic or Latino
14 Participants59 Participants22 Participants12 Participants11 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
27 Participants109 Participants36 Participants22 Participants24 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants
Race/Ethnicity, Customized
American Indian or Alaska Native
4 Participants14 Participants5 Participants3 Participants2 Participants
Race/Ethnicity, Customized
Asian
6 Participants19 Participants6 Participants5 Participants2 Participants
Race/Ethnicity, Customized
Black (or African American)
5 Participants23 Participants9 Participants1 Participants8 Participants
Race/Ethnicity, Customized
Multiple
0 Participants1 Participants0 Participants1 Participants0 Participants
Race/Ethnicity, Customized
Other
1 Participants17 Participants9 Participants4 Participants3 Participants
Race/Ethnicity, Customized
White
25 Participants94 Participants29 Participants20 Participants20 Participants
Sex: Female, Male
Female
38 Participants158 Participants56 Participants33 Participants31 Participants
Sex: Female, Male
Male
3 Participants10 Participants2 Participants1 Participants4 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
1 / 410 / 350 / 330 / 59
other
Total, other adverse events
18 / 4127 / 3533 / 3348 / 59
serious
Total, serious adverse events
4 / 413 / 354 / 333 / 59

Outcome results

Primary

Number of Participants Who Achieved a Systemic Lupus Erythematosus Responder Index 4 (SRI-4) Response at Week 52

A participant achieved an SRI-4 response if all the following criteria were met: * ≥ 4-point reduction from baseline in Hybrid Systemic Lupus Erythematosus Disease Activity Index (hSLEDAI) score (scale 0-105, with higher scores indicating more disease activity). * No new British-Isles Lupus Assessment Group (BILAG) A score and no \> 1 new BILAG B organ domain scores compared with baseline. The BILAG index evaluates disease activity in 9 separate organ systems. Each of the organ systems are allocated an alphabetical score of A (most active), B (moderate activity), C (minor activity), D (stable) or E (never present). * \< 0.3-points deterioration from baseline in Physician Global Assessment (PGA) visual analogue (VAS) score (scale 0 to 3, with higher scores indicating more severe disease). Participants were considered non-responders for using more than protocol-permitted therapies.

Time frame: Week 52

Population: Full Analysis Set: Included all participants randomized in the study. Only participants who had the opportunity to complete the visit by the date of the study termination decision being communicated to sites were included.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants Who Achieved a Systemic Lupus Erythematosus Responder Index 4 (SRI-4) Response at Week 528 Participants
Efavaleukin Alfa Low DoseNumber of Participants Who Achieved a Systemic Lupus Erythematosus Responder Index 4 (SRI-4) Response at Week 524 Participants
Efavaleukin Alfa Medium DoseNumber of Participants Who Achieved a Systemic Lupus Erythematosus Responder Index 4 (SRI-4) Response at Week 526 Participants
Efavaleukin Alfa High DoseNumber of Participants Who Achieved a Systemic Lupus Erythematosus Responder Index 4 (SRI-4) Response at Week 525 Participants
Secondary

Annualized Flare Rate Over 52 Weeks

A flare was defined as a BILAG score designation of worse or new resulting in a B score in ≥ 2 organs or an A score in ≥ 1 organ. The BILAG index evaluates disease activity in 9 separate organ systems. Each of the organ systems are allocated an alphabetical score of A (most active), B (moderate activity), C (minor activity), D (stable) or E (never present). The annualized flare rate was calculated as the number of flares divided by the flare exposure time in days multiplied by 365.25.

Time frame: Up to 52 weeks

Population: Full Analysis Set: Included all participants randomized in the study.

ArmMeasureValue (NUMBER)
PlaceboAnnualized Flare Rate Over 52 Weeks0.3 flares per participant-year
Efavaleukin Alfa Low DoseAnnualized Flare Rate Over 52 Weeks0.5 flares per participant-year
Efavaleukin Alfa Medium DoseAnnualized Flare Rate Over 52 Weeks0.7 flares per participant-year
Efavaleukin Alfa High DoseAnnualized Flare Rate Over 52 Weeks0.4 flares per participant-year
Secondary

Change From Baseline in Fatigue Standardized Score Using the Patient-Reported Outcome Measurement Information System (PROMIS) Fatigue Short Form (SF) 7a Instrument at Week 12, 24, 36 and 52

The PROMIS Fatigue SF 7a assesses the experience of fatigue as well as its impact on physical, mental and social activities. The score ranges from 7 to 35, with higher scores indicating more fatigue. A negative change from baseline indicates a reduction in fatigue. Efficacy data collected after the study termination decision date were censored and excluded from analyses for that particular visit.

Time frame: Baseline to Week 12, 24, 36 and 52

Population: Full Analysis Set: Included all participants randomized in the study and had observed data.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in Fatigue Standardized Score Using the Patient-Reported Outcome Measurement Information System (PROMIS) Fatigue Short Form (SF) 7a Instrument at Week 12, 24, 36 and 52Week 12-4.12 score on a scaleStandard Deviation 7.91
PlaceboChange From Baseline in Fatigue Standardized Score Using the Patient-Reported Outcome Measurement Information System (PROMIS) Fatigue Short Form (SF) 7a Instrument at Week 12, 24, 36 and 52Week 24-5.24 score on a scaleStandard Deviation 8.05
PlaceboChange From Baseline in Fatigue Standardized Score Using the Patient-Reported Outcome Measurement Information System (PROMIS) Fatigue Short Form (SF) 7a Instrument at Week 12, 24, 36 and 52Week 36-3.20 score on a scaleStandard Deviation 10.7
PlaceboChange From Baseline in Fatigue Standardized Score Using the Patient-Reported Outcome Measurement Information System (PROMIS) Fatigue Short Form (SF) 7a Instrument at Week 12, 24, 36 and 52Week 52-3.29 score on a scaleStandard Deviation 7.64
Efavaleukin Alfa Low DoseChange From Baseline in Fatigue Standardized Score Using the Patient-Reported Outcome Measurement Information System (PROMIS) Fatigue Short Form (SF) 7a Instrument at Week 12, 24, 36 and 52Week 24-4.95 score on a scaleStandard Deviation 8.72
Efavaleukin Alfa Low DoseChange From Baseline in Fatigue Standardized Score Using the Patient-Reported Outcome Measurement Information System (PROMIS) Fatigue Short Form (SF) 7a Instrument at Week 12, 24, 36 and 52Week 36-5.77 score on a scaleStandard Deviation 7.09
Efavaleukin Alfa Low DoseChange From Baseline in Fatigue Standardized Score Using the Patient-Reported Outcome Measurement Information System (PROMIS) Fatigue Short Form (SF) 7a Instrument at Week 12, 24, 36 and 52Week 52-8.44 score on a scaleStandard Deviation 4.21
Efavaleukin Alfa Low DoseChange From Baseline in Fatigue Standardized Score Using the Patient-Reported Outcome Measurement Information System (PROMIS) Fatigue Short Form (SF) 7a Instrument at Week 12, 24, 36 and 52Week 12-5.52 score on a scaleStandard Deviation 5.04
Efavaleukin Alfa Medium DoseChange From Baseline in Fatigue Standardized Score Using the Patient-Reported Outcome Measurement Information System (PROMIS) Fatigue Short Form (SF) 7a Instrument at Week 12, 24, 36 and 52Week 36-5.32 score on a scaleStandard Deviation 8.9
Efavaleukin Alfa Medium DoseChange From Baseline in Fatigue Standardized Score Using the Patient-Reported Outcome Measurement Information System (PROMIS) Fatigue Short Form (SF) 7a Instrument at Week 12, 24, 36 and 52Week 24-4.62 score on a scaleStandard Deviation 8.03
Efavaleukin Alfa Medium DoseChange From Baseline in Fatigue Standardized Score Using the Patient-Reported Outcome Measurement Information System (PROMIS) Fatigue Short Form (SF) 7a Instrument at Week 12, 24, 36 and 52Week 52-6.97 score on a scaleStandard Deviation 14.2
Efavaleukin Alfa Medium DoseChange From Baseline in Fatigue Standardized Score Using the Patient-Reported Outcome Measurement Information System (PROMIS) Fatigue Short Form (SF) 7a Instrument at Week 12, 24, 36 and 52Week 12-5.78 score on a scaleStandard Deviation 8.39
Efavaleukin Alfa High DoseChange From Baseline in Fatigue Standardized Score Using the Patient-Reported Outcome Measurement Information System (PROMIS) Fatigue Short Form (SF) 7a Instrument at Week 12, 24, 36 and 52Week 52-5.47 score on a scaleStandard Deviation 13.97
Efavaleukin Alfa High DoseChange From Baseline in Fatigue Standardized Score Using the Patient-Reported Outcome Measurement Information System (PROMIS) Fatigue Short Form (SF) 7a Instrument at Week 12, 24, 36 and 52Week 24-7.17 score on a scaleStandard Deviation 7.01
Efavaleukin Alfa High DoseChange From Baseline in Fatigue Standardized Score Using the Patient-Reported Outcome Measurement Information System (PROMIS) Fatigue Short Form (SF) 7a Instrument at Week 12, 24, 36 and 52Week 12-4.74 score on a scaleStandard Deviation 9.6
Efavaleukin Alfa High DoseChange From Baseline in Fatigue Standardized Score Using the Patient-Reported Outcome Measurement Information System (PROMIS) Fatigue Short Form (SF) 7a Instrument at Week 12, 24, 36 and 52Week 36-5.34 score on a scaleStandard Deviation 10.61
Secondary

Change From Baseline in the Bodily Pain Domain Score of the SF-36V2 at Week 12, 24, 36 and 52

The SF-36v2 contains 36 items and yields assessments of 8 domains of health-related quality of life: 1. Limitations in physical activities because of health problems. 2. Limitations in social activities because of physical or emotional problems. 3. Limitations in usual role activities because of physical health problems. 4. Bodily pain. 5. General mental health (psychological distress and well-being). 6. Limitations in usual role activities because of emotional problems. 7. Vitality (energy and fatigue). 8. General health perceptions. The scores from the 8 domains will be evaluated independently and aggregated into 2 norm-based summary component measures of physical and mental health. The recall period is the past 7 days. The score ranges from 0-100 for the summary components and for each domain, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.

Time frame: Baseline to Week 12, 24, 36 and 52

Population: Full Analysis Set: Included all participants randomized in the study and had observed data.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in the Bodily Pain Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 1213.6 score on a scaleStandard Deviation 25.1
PlaceboChange From Baseline in the Bodily Pain Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 2420.4 score on a scaleStandard Deviation 26.6
PlaceboChange From Baseline in the Bodily Pain Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 3622.0 score on a scaleStandard Deviation 26.3
PlaceboChange From Baseline in the Bodily Pain Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 5210.4 score on a scaleStandard Deviation 7.7
Efavaleukin Alfa Low DoseChange From Baseline in the Bodily Pain Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 2414.3 score on a scaleStandard Deviation 21.5
Efavaleukin Alfa Low DoseChange From Baseline in the Bodily Pain Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 3619.5 score on a scaleStandard Deviation 20.7
Efavaleukin Alfa Low DoseChange From Baseline in the Bodily Pain Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 5211.1 score on a scaleStandard Deviation 17.1
Efavaleukin Alfa Low DoseChange From Baseline in the Bodily Pain Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 1213.7 score on a scaleStandard Deviation 23
Efavaleukin Alfa Medium DoseChange From Baseline in the Bodily Pain Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 3624.6 score on a scaleStandard Deviation 33
Efavaleukin Alfa Medium DoseChange From Baseline in the Bodily Pain Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 2413.8 score on a scaleStandard Deviation 23.1
Efavaleukin Alfa Medium DoseChange From Baseline in the Bodily Pain Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 5217.9 score on a scaleStandard Deviation 29.7
Efavaleukin Alfa Medium DoseChange From Baseline in the Bodily Pain Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 1218.8 score on a scaleStandard Deviation 22.6
Efavaleukin Alfa High DoseChange From Baseline in the Bodily Pain Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 5216.7 score on a scaleStandard Deviation 37.1
Efavaleukin Alfa High DoseChange From Baseline in the Bodily Pain Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 2418.4 score on a scaleStandard Deviation 26.6
Efavaleukin Alfa High DoseChange From Baseline in the Bodily Pain Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 1210.2 score on a scaleStandard Deviation 23
Efavaleukin Alfa High DoseChange From Baseline in the Bodily Pain Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 3615.4 score on a scaleStandard Deviation 23.3
Secondary

Change From Baseline in the Body Image Domain Score of the LupusQoL at Week 12, 24, 36 and 52

The LupusQoL is a SLE-specific health-related QoL instrument and consists of 8 domains: 1. Physical health. 2. Pain. 3. Planning. 4. Intimate relationships. 5. Burden to others. 6. Emotional health. 7. Body image. 8. Fatigue. The score for each domain ranges from 0-100, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.

Time frame: Baseline to Week 12, 24, 36 and 52

Population: Full Analysis Set: Included all participants randomized in the study and had observed data.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in the Body Image Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 129.6 score on a scaleStandard Deviation 26.5
PlaceboChange From Baseline in the Body Image Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 2411.6 score on a scaleStandard Deviation 30.6
PlaceboChange From Baseline in the Body Image Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 366.1 score on a scaleStandard Deviation 25.6
PlaceboChange From Baseline in the Body Image Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 5212.5 score on a scaleStandard Deviation 33.3
Efavaleukin Alfa Low DoseChange From Baseline in the Body Image Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 242.3 score on a scaleStandard Deviation 25.5
Efavaleukin Alfa Low DoseChange From Baseline in the Body Image Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 3614.7 score on a scaleStandard Deviation 21.4
Efavaleukin Alfa Low DoseChange From Baseline in the Body Image Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 5217.0 score on a scaleStandard Deviation 22.5
Efavaleukin Alfa Low DoseChange From Baseline in the Body Image Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 129.0 score on a scaleStandard Deviation 18.7
Efavaleukin Alfa Medium DoseChange From Baseline in the Body Image Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 3618.8 score on a scaleStandard Deviation 41.2
Efavaleukin Alfa Medium DoseChange From Baseline in the Body Image Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 243.0 score on a scaleStandard Deviation 28.2
Efavaleukin Alfa Medium DoseChange From Baseline in the Body Image Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 527.7 score on a scaleStandard Deviation 37.4
Efavaleukin Alfa Medium DoseChange From Baseline in the Body Image Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 124.1 score on a scaleStandard Deviation 34
Efavaleukin Alfa High DoseChange From Baseline in the Body Image Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 525.5 score on a scaleStandard Deviation 36.6
Efavaleukin Alfa High DoseChange From Baseline in the Body Image Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 245.2 score on a scaleStandard Deviation 29.6
Efavaleukin Alfa High DoseChange From Baseline in the Body Image Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 124.6 score on a scaleStandard Deviation 26.6
Efavaleukin Alfa High DoseChange From Baseline in the Body Image Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 366.1 score on a scaleStandard Deviation 28
Secondary

Change From Baseline in the Burden to Others Domain Score of the LupusQoL at Week 12, 24, 36 and 52

The LupusQoL is a SLE-specific health-related QoL instrument and consists of 8 domains: 1. Physical health. 2. Pain. 3. Planning. 4. Intimate relationships. 5. Burden to others. 6. Emotional health. 7. Body image. 8. Fatigue. The score for each domain ranges from 0-100, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.

Time frame: Baseline to Week 12, 24, 36 and 52

Population: Full Analysis Set: Included all participants randomized in the study and had observed data.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in the Burden to Others Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 1210.784 score on a scaleStandard Deviation 28.169
PlaceboChange From Baseline in the Burden to Others Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 2420.115 score on a scaleStandard Deviation 31.459
PlaceboChange From Baseline in the Burden to Others Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 3614.773 score on a scaleStandard Deviation 30.53
PlaceboChange From Baseline in the Burden to Others Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 5216.667 score on a scaleStandard Deviation 22.713
Efavaleukin Alfa Low DoseChange From Baseline in the Burden to Others Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 245.682 score on a scaleStandard Deviation 24.719
Efavaleukin Alfa Low DoseChange From Baseline in the Burden to Others Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 3610.088 score on a scaleStandard Deviation 22.149
Efavaleukin Alfa Low DoseChange From Baseline in the Burden to Others Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 5238.333 score on a scaleStandard Deviation 19.185
Efavaleukin Alfa Low DoseChange From Baseline in the Burden to Others Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 1214.333 score on a scaleStandard Deviation 17.099
Efavaleukin Alfa Medium DoseChange From Baseline in the Burden to Others Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 3621.795 score on a scaleStandard Deviation 22.448
Efavaleukin Alfa Medium DoseChange From Baseline in the Burden to Others Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 2412.083 score on a scaleStandard Deviation 23.798
Efavaleukin Alfa Medium DoseChange From Baseline in the Burden to Others Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 5221.212 score on a scaleStandard Deviation 23.677
Efavaleukin Alfa Medium DoseChange From Baseline in the Burden to Others Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 1217.803 score on a scaleStandard Deviation 30.134
Efavaleukin Alfa High DoseChange From Baseline in the Burden to Others Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 5218.333 score on a scaleStandard Deviation 28.273
Efavaleukin Alfa High DoseChange From Baseline in the Burden to Others Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 2412.778 score on a scaleStandard Deviation 29.093
Efavaleukin Alfa High DoseChange From Baseline in the Burden to Others Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 126.944 score on a scaleStandard Deviation 29.673
Efavaleukin Alfa High DoseChange From Baseline in the Burden to Others Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 3618.519 score on a scaleStandard Deviation 26.438
Secondary

Change From Baseline in the Emotional Health Domain Score of the LupusQoL at Week 12, 24, 36 and 52

The LupusQoL is a SLE-specific health-related QoL instrument and consists of 8 domains: 1. Physical health. 2. Pain. 3. Planning. 4. Intimate relationships. 5. Burden to others. 6. Emotional health. 7. Body image. 8. Fatigue. The score for each domain ranges from 0-100, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.

Time frame: Baseline to Week 12, 24, 36 and 52

Population: Full Analysis Set: Included all participants randomized in the study and had observed data.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in the Emotional Health Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 129.681 score on a scaleStandard Deviation 21.729
PlaceboChange From Baseline in the Emotional Health Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 2413.218 score on a scaleStandard Deviation 26.495
PlaceboChange From Baseline in the Emotional Health Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 3610.038 score on a scaleStandard Deviation 25.994
PlaceboChange From Baseline in the Emotional Health Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 524.167 score on a scaleStandard Deviation 20.534
Efavaleukin Alfa Low DoseChange From Baseline in the Emotional Health Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 247.765 score on a scaleStandard Deviation 19.974
Efavaleukin Alfa Low DoseChange From Baseline in the Emotional Health Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 366.798 score on a scaleStandard Deviation 18.799
Efavaleukin Alfa Low DoseChange From Baseline in the Emotional Health Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 5213.333 score on a scaleStandard Deviation 21.123
Efavaleukin Alfa Low DoseChange From Baseline in the Emotional Health Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 1210.667 score on a scaleStandard Deviation 19.021
Efavaleukin Alfa Medium DoseChange From Baseline in the Emotional Health Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 3620.192 score on a scaleStandard Deviation 24.641
Efavaleukin Alfa Medium DoseChange From Baseline in the Emotional Health Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 2411.458 score on a scaleStandard Deviation 20.894
Efavaleukin Alfa Medium DoseChange From Baseline in the Emotional Health Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 5215.530 score on a scaleStandard Deviation 27.518
Efavaleukin Alfa Medium DoseChange From Baseline in the Emotional Health Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 1214.962 score on a scaleStandard Deviation 28.425
Efavaleukin Alfa High DoseChange From Baseline in the Emotional Health Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 52-5.000 score on a scaleStandard Deviation 25.595
Efavaleukin Alfa High DoseChange From Baseline in the Emotional Health Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 249.722 score on a scaleStandard Deviation 21.283
Efavaleukin Alfa High DoseChange From Baseline in the Emotional Health Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 125.258 score on a scaleStandard Deviation 21.465
Efavaleukin Alfa High DoseChange From Baseline in the Emotional Health Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 363.704 score on a scaleStandard Deviation 30.178
Secondary

Change From Baseline in the Emotional Role Domain Score of the SF-36V2 at Week 12, 24, 36 and 52

The SF-36v2 contains 36 items and yields assessments of 8 domains of health-related quality of life: 1. Limitations in physical activities because of health problems. 2. Limitations in social activities because of physical or emotional problems. 3. Limitations in usual role activities because of physical health problems. 4. Bodily pain. 5. General mental health (psychological distress and well-being). 6. Limitations in usual role activities because of emotional problems. 7. Vitality (energy and fatigue). 8. General health perceptions. The scores from the 8 domains will be evaluated independently and aggregated into 2 norm-based summary component measures of physical and mental health. The recall period is the past 7 days. The score ranges from 0-100 for the summary components and for each domain, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.

Time frame: Baseline to Week 12, 24, 36 and 52

Population: Full Analysis Set: Included all participants randomized in the study and had observed data.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in the Emotional Role Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 1213.964 score on a scaleStandard Deviation 27.781
PlaceboChange From Baseline in the Emotional Role Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 2416.926 score on a scaleStandard Deviation 29.82
PlaceboChange From Baseline in the Emotional Role Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 3617.028 score on a scaleStandard Deviation 35.129
PlaceboChange From Baseline in the Emotional Role Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 529.375 score on a scaleStandard Deviation 18.057
Efavaleukin Alfa Low DoseChange From Baseline in the Emotional Role Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 24-5.208 score on a scaleStandard Deviation 23.417
Efavaleukin Alfa Low DoseChange From Baseline in the Emotional Role Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 365.952 score on a scaleStandard Deviation 24.029
Efavaleukin Alfa Low DoseChange From Baseline in the Emotional Role Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 528.334 score on a scaleStandard Deviation 14.433
Efavaleukin Alfa Low DoseChange From Baseline in the Emotional Role Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 12-3.704 score on a scaleStandard Deviation 23.036
Efavaleukin Alfa Medium DoseChange From Baseline in the Emotional Role Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 366.548 score on a scaleStandard Deviation 29.81
Efavaleukin Alfa Medium DoseChange From Baseline in the Emotional Role Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 243.031 score on a scaleStandard Deviation 23.223
Efavaleukin Alfa Medium DoseChange From Baseline in the Emotional Role Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 52-2.273 score on a scaleStandard Deviation 33.144
Efavaleukin Alfa Medium DoseChange From Baseline in the Emotional Role Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 124.514 score on a scaleStandard Deviation 26.236
Efavaleukin Alfa High DoseChange From Baseline in the Emotional Role Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 52-9.168 score on a scaleStandard Deviation 32.972
Efavaleukin Alfa High DoseChange From Baseline in the Emotional Role Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 248.333 score on a scaleStandard Deviation 25.769
Efavaleukin Alfa High DoseChange From Baseline in the Emotional Role Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 123.804 score on a scaleStandard Deviation 23.812
Efavaleukin Alfa High DoseChange From Baseline in the Emotional Role Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 36-0.440 score on a scaleStandard Deviation 33.847
Secondary

Change From Baseline in the Fatigue Domain Score of the LupusQoL at Week 12, 24, 36 and 52

The LupusQoL is a SLE-specific health-related QoL instrument and consists of 8 domains: 1. Physical health. 2. Pain. 3. Planning. 4. Intimate relationships. 5. Burden to others. 6. Emotional health. 7. Body image. 8. Fatigue. The score for each domain ranges from 0-100, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.

Time frame: Baseline to Week 12, 24, 36 and 52

Population: Full Analysis Set: Included all participants randomized in the study and had observed data.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in the Fatigue Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 128.456 score on a scaleStandard Deviation 23.329
PlaceboChange From Baseline in the Fatigue Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 2410.776 score on a scaleStandard Deviation 24.6
PlaceboChange From Baseline in the Fatigue Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 365.966 score on a scaleStandard Deviation 29.345
PlaceboChange From Baseline in the Fatigue Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 5210.938 score on a scaleStandard Deviation 15.58
Efavaleukin Alfa Low DoseChange From Baseline in the Fatigue Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 247.670 score on a scaleStandard Deviation 23.059
Efavaleukin Alfa Low DoseChange From Baseline in the Fatigue Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 3610.526 score on a scaleStandard Deviation 17.561
Efavaleukin Alfa Low DoseChange From Baseline in the Fatigue Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 5225.000 score on a scaleStandard Deviation 4.419
Efavaleukin Alfa Low DoseChange From Baseline in the Fatigue Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 129.750 score on a scaleStandard Deviation 15.104
Efavaleukin Alfa Medium DoseChange From Baseline in the Fatigue Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 3612.019 score on a scaleStandard Deviation 26.695
Efavaleukin Alfa Medium DoseChange From Baseline in the Fatigue Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 2413.750 score on a scaleStandard Deviation 20.135
Efavaleukin Alfa Medium DoseChange From Baseline in the Fatigue Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 5215.341 score on a scaleStandard Deviation 26.274
Efavaleukin Alfa Medium DoseChange From Baseline in the Fatigue Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 1215.909 score on a scaleStandard Deviation 21.368
Efavaleukin Alfa High DoseChange From Baseline in the Fatigue Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 5216.250 score on a scaleStandard Deviation 28.596
Efavaleukin Alfa High DoseChange From Baseline in the Fatigue Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 2413.542 score on a scaleStandard Deviation 20.108
Efavaleukin Alfa High DoseChange From Baseline in the Fatigue Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 128.185 score on a scaleStandard Deviation 21.273
Efavaleukin Alfa High DoseChange From Baseline in the Fatigue Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 364.514 score on a scaleStandard Deviation 23.853
Secondary

Change From Baseline in the General Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52

The SF-36v2 contains 36 items and yields assessments of 8 domains of health-related quality of life: 1. Limitations in physical activities because of health problems. 2. Limitations in social activities because of physical or emotional problems. 3. Limitations in usual role activities because of physical health problems. 4. Bodily pain. 5. General mental health (psychological distress and well-being). 6. Limitations in usual role activities because of emotional problems. 7. Vitality (energy and fatigue). 8. General health perceptions. The scores from the 8 domains will be evaluated independently and aggregated into 2 norm-based summary component measures of physical and mental health. The recall period is the past 7 days. The score ranges from 0-100 for the summary components and for each domain, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.

Time frame: Baseline to Week 12, 24, 36 and 52

Population: Full Analysis Set: Included all participants randomized in the study and had observed data.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in the General Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 125.2 score on a scaleStandard Deviation 15.8
PlaceboChange From Baseline in the General Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 249.2 score on a scaleStandard Deviation 17.7
PlaceboChange From Baseline in the General Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 3610.7 score on a scaleStandard Deviation 16.1
PlaceboChange From Baseline in the General Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 527.5 score on a scaleStandard Deviation 8.9
Efavaleukin Alfa Low DoseChange From Baseline in the General Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 246.2 score on a scaleStandard Deviation 19
Efavaleukin Alfa Low DoseChange From Baseline in the General Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 365.6 score on a scaleStandard Deviation 14.9
Efavaleukin Alfa Low DoseChange From Baseline in the General Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 522.4 score on a scaleStandard Deviation 5.9
Efavaleukin Alfa Low DoseChange From Baseline in the General Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 126.1 score on a scaleStandard Deviation 17.7
Efavaleukin Alfa Medium DoseChange From Baseline in the General Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 367.2 score on a scaleStandard Deviation 17.2
Efavaleukin Alfa Medium DoseChange From Baseline in the General Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 243.8 score on a scaleStandard Deviation 16.2
Efavaleukin Alfa Medium DoseChange From Baseline in the General Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 526.7 score on a scaleStandard Deviation 19
Efavaleukin Alfa Medium DoseChange From Baseline in the General Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 1210.6 score on a scaleStandard Deviation 15.9
Efavaleukin Alfa High DoseChange From Baseline in the General Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 520.5 score on a scaleStandard Deviation 29.5
Efavaleukin Alfa High DoseChange From Baseline in the General Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 245.6 score on a scaleStandard Deviation 15.3
Efavaleukin Alfa High DoseChange From Baseline in the General Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 122.6 score on a scaleStandard Deviation 16.2
Efavaleukin Alfa High DoseChange From Baseline in the General Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 36-2.1 score on a scaleStandard Deviation 16.6
Secondary

Change From Baseline in the Intimate Relationship Domain Score of the LupusQoL at Week 12, 24, 36 and 52

The LupusQoL is a SLE-specific health-related QoL instrument and consists of 8 domains: 1. Physical health. 2. Pain. 3. Planning. 4. Intimate relationships. 5. Burden to others. 6. Emotional health. 7. Body image. 8. Fatigue. The score for each domain ranges from 0-100, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.

Time frame: Baseline to Week 12, 24, 36 and 52

Population: Full Analysis Set: Included all participants randomized in the study and had observed data.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in the Intimate Relationship Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 1217.26 score on a scaleStandard Deviation 27.52
PlaceboChange From Baseline in the Intimate Relationship Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 2410.83 score on a scaleStandard Deviation 35
PlaceboChange From Baseline in the Intimate Relationship Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 3610.94 score on a scaleStandard Deviation 33.81
PlaceboChange From Baseline in the Intimate Relationship Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 526.25 score on a scaleStandard Deviation 51.08
Efavaleukin Alfa Low DoseChange From Baseline in the Intimate Relationship Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 241.56 score on a scaleStandard Deviation 26.57
Efavaleukin Alfa Low DoseChange From Baseline in the Intimate Relationship Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 36-1.67 score on a scaleStandard Deviation 30.2
Efavaleukin Alfa Low DoseChange From Baseline in the Intimate Relationship Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 520.00 score on a scaleStandard Deviation 8.84
Efavaleukin Alfa Low DoseChange From Baseline in the Intimate Relationship Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 123.47 score on a scaleStandard Deviation 22.61
Efavaleukin Alfa Medium DoseChange From Baseline in the Intimate Relationship Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 3611.36 score on a scaleStandard Deviation 30.34
Efavaleukin Alfa Medium DoseChange From Baseline in the Intimate Relationship Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 2419.53 score on a scaleStandard Deviation 28.86
Efavaleukin Alfa Medium DoseChange From Baseline in the Intimate Relationship Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 529.38 score on a scaleStandard Deviation 35.83
Efavaleukin Alfa Medium DoseChange From Baseline in the Intimate Relationship Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 1214.29 score on a scaleStandard Deviation 35.65
Efavaleukin Alfa High DoseChange From Baseline in the Intimate Relationship Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 528.33 score on a scaleStandard Deviation 31.29
Efavaleukin Alfa High DoseChange From Baseline in the Intimate Relationship Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 2413.16 score on a scaleStandard Deviation 29.01
Efavaleukin Alfa High DoseChange From Baseline in the Intimate Relationship Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 1211.21 score on a scaleStandard Deviation 31.04
Efavaleukin Alfa High DoseChange From Baseline in the Intimate Relationship Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 3612.50 score on a scaleStandard Deviation 15.99
Secondary

Change From Baseline in the Mental Component Score of the SF-36V2 at Week 12, 24, 36 and 52

The SF-36v2 contains 36 items and yields assessments of 8 domains of health-related quality of life: 1. Limitations in physical activities because of health problems. 2. Limitations in social activities because of physical or emotional problems. 3. Limitations in usual role activities because of physical health problems. 4. Bodily pain. 5. General mental health (psychological distress and well-being). 6. Limitations in usual role activities because of emotional problems. 7. Vitality (energy and fatigue). 8. General health perceptions. The scores from the 8 domains will be evaluated independently and aggregated into 2 norm-based summary component measures of physical and mental health. The recall period is the past 7 days. The score ranges from 0-100 for the summary components and for each domain, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.

Time frame: Baseline to Week 12, 24, 36 and 52

Population: Full Analysis Set: Included all participants randomized in the study and had observed data.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in the Mental Component Score of the SF-36V2 at Week 12, 24, 36 and 52Week 125.079 score on a scaleStandard Deviation 11.395
PlaceboChange From Baseline in the Mental Component Score of the SF-36V2 at Week 12, 24, 36 and 52Week 246.510 score on a scaleStandard Deviation 12.498
PlaceboChange From Baseline in the Mental Component Score of the SF-36V2 at Week 12, 24, 36 and 52Week 365.587 score on a scaleStandard Deviation 14.482
PlaceboChange From Baseline in the Mental Component Score of the SF-36V2 at Week 12, 24, 36 and 52Week 524.781 score on a scaleStandard Deviation 8.485
Efavaleukin Alfa Low DoseChange From Baseline in the Mental Component Score of the SF-36V2 at Week 12, 24, 36 and 52Week 240.498 score on a scaleStandard Deviation 10.902
Efavaleukin Alfa Low DoseChange From Baseline in the Mental Component Score of the SF-36V2 at Week 12, 24, 36 and 52Week 36-0.118 score on a scaleStandard Deviation 10.56
Efavaleukin Alfa Low DoseChange From Baseline in the Mental Component Score of the SF-36V2 at Week 12, 24, 36 and 52Week 521.106 score on a scaleStandard Deviation 9.633
Efavaleukin Alfa Low DoseChange From Baseline in the Mental Component Score of the SF-36V2 at Week 12, 24, 36 and 52Week 120.080 score on a scaleStandard Deviation 10.789
Efavaleukin Alfa Medium DoseChange From Baseline in the Mental Component Score of the SF-36V2 at Week 12, 24, 36 and 52Week 363.129 score on a scaleStandard Deviation 12.141
Efavaleukin Alfa Medium DoseChange From Baseline in the Mental Component Score of the SF-36V2 at Week 12, 24, 36 and 52Week 241.585 score on a scaleStandard Deviation 9.032
Efavaleukin Alfa Medium DoseChange From Baseline in the Mental Component Score of the SF-36V2 at Week 12, 24, 36 and 52Week 52-1.813 score on a scaleStandard Deviation 16.608
Efavaleukin Alfa Medium DoseChange From Baseline in the Mental Component Score of the SF-36V2 at Week 12, 24, 36 and 52Week 123.087 score on a scaleStandard Deviation 11.651
Efavaleukin Alfa High DoseChange From Baseline in the Mental Component Score of the SF-36V2 at Week 12, 24, 36 and 52Week 52-2.163 score on a scaleStandard Deviation 13.023
Efavaleukin Alfa High DoseChange From Baseline in the Mental Component Score of the SF-36V2 at Week 12, 24, 36 and 52Week 243.959 score on a scaleStandard Deviation 9.22
Efavaleukin Alfa High DoseChange From Baseline in the Mental Component Score of the SF-36V2 at Week 12, 24, 36 and 52Week 121.867 score on a scaleStandard Deviation 9.092
Efavaleukin Alfa High DoseChange From Baseline in the Mental Component Score of the SF-36V2 at Week 12, 24, 36 and 52Week 360.564 score on a scaleStandard Deviation 13.586
Secondary

Change From Baseline in the Mental Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52

The SF-36v2 contains 36 items and yields assessments of 8 domains of health-related quality of life: 1. Limitations in physical activities because of health problems. 2. Limitations in social activities because of physical or emotional problems. 3. Limitations in usual role activities because of physical health problems. 4. Bodily pain. 5. General mental health (psychological distress and well-being). 6. Limitations in usual role activities because of emotional problems. 7. Vitality (energy and fatigue). 8. General health perceptions. The scores from the 8 domains will be evaluated independently and aggregated into 2 norm-based summary component measures of physical and mental health. The recall period is the past 7 days. The score ranges from 0-100 for the summary components and for each domain, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.

Time frame: Baseline to Week 12, 24, 36 and 52

Population: Full Analysis Set: Included all participants randomized in the study and had observed data.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in the Mental Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 128.2 score on a scaleStandard Deviation 19.3
PlaceboChange From Baseline in the Mental Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 2412.0 score on a scaleStandard Deviation 21.2
PlaceboChange From Baseline in the Mental Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 369.6 score on a scaleStandard Deviation 23.2
PlaceboChange From Baseline in the Mental Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 527.5 score on a scaleStandard Deviation 16.7
Efavaleukin Alfa Low DoseChange From Baseline in the Mental Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 52-2.1 score on a scaleStandard Deviation 22.7
Efavaleukin Alfa Low DoseChange From Baseline in the Mental Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 36-1.9 score on a scaleStandard Deviation 18.4
Efavaleukin Alfa Low DoseChange From Baseline in the Mental Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 243.8 score on a scaleStandard Deviation 22.4
Efavaleukin Alfa Low DoseChange From Baseline in the Mental Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 121.3 score on a scaleStandard Deviation 18.7
Efavaleukin Alfa Medium DoseChange From Baseline in the Mental Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 366.4 score on a scaleStandard Deviation 22.6
Efavaleukin Alfa Medium DoseChange From Baseline in the Mental Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 520.5 score on a scaleStandard Deviation 33
Efavaleukin Alfa Medium DoseChange From Baseline in the Mental Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 247.5 score on a scaleStandard Deviation 19.6
Efavaleukin Alfa Medium DoseChange From Baseline in the Mental Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 129.4 score on a scaleStandard Deviation 22.5
Efavaleukin Alfa High DoseChange From Baseline in the Mental Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 521.5 score on a scaleStandard Deviation 28.5
Efavaleukin Alfa High DoseChange From Baseline in the Mental Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 125.2 score on a scaleStandard Deviation 17.4
Efavaleukin Alfa High DoseChange From Baseline in the Mental Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 249.4 score on a scaleStandard Deviation 17.8
Efavaleukin Alfa High DoseChange From Baseline in the Mental Health Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 366.6 score on a scaleStandard Deviation 24.3
Secondary

Change From Baseline in the Pain Domain Score of the LupusQoL at Week 12, 24, 36 and 52

The LupusQoL is a SLE-specific health-related QoL instrument and consists of 8 domains: 1. Physical health. 2. Pain. 3. Planning. 4. Intimate relationships. 5. Burden to others. 6. Emotional health. 7. Body image. 8. Fatigue. The score for each domain ranges from 0-100, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.

Time frame: Baseline to Week 12, 24, 36 and 52

Population: Full Analysis Set: Included all participants randomized in the study and had observed data.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in the Pain Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 1217.892 score on a scaleStandard Deviation 22.392
PlaceboChange From Baseline in the Pain Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 2421.264 score on a scaleStandard Deviation 28.311
PlaceboChange From Baseline in the Pain Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 3612.879 score on a scaleStandard Deviation 25.423
PlaceboChange From Baseline in the Pain Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 5214.583 score on a scaleStandard Deviation 18.767
Efavaleukin Alfa Low DoseChange From Baseline in the Pain Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 2414.773 score on a scaleStandard Deviation 25.708
Efavaleukin Alfa Low DoseChange From Baseline in the Pain Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 3617.105 score on a scaleStandard Deviation 21.956
Efavaleukin Alfa Low DoseChange From Baseline in the Pain Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 5216.667 score on a scaleStandard Deviation 8.333
Efavaleukin Alfa Low DoseChange From Baseline in the Pain Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 1216.333 score on a scaleStandard Deviation 23.873
Efavaleukin Alfa Medium DoseChange From Baseline in the Pain Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 3616.667 score on a scaleStandard Deviation 30.238
Efavaleukin Alfa Medium DoseChange From Baseline in the Pain Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 2411.667 score on a scaleStandard Deviation 23.939
Efavaleukin Alfa Medium DoseChange From Baseline in the Pain Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 528.333 score on a scaleStandard Deviation 27.639
Efavaleukin Alfa Medium DoseChange From Baseline in the Pain Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 1217.424 score on a scaleStandard Deviation 23.975
Efavaleukin Alfa High DoseChange From Baseline in the Pain Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 5211.667 score on a scaleStandard Deviation 27.833
Efavaleukin Alfa High DoseChange From Baseline in the Pain Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 2411.944 score on a scaleStandard Deviation 28.339
Efavaleukin Alfa High DoseChange From Baseline in the Pain Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 1213.294 score on a scaleStandard Deviation 24.072
Efavaleukin Alfa High DoseChange From Baseline in the Pain Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 365.556 score on a scaleStandard Deviation 28.296
Secondary

Change From Baseline in the Physical Component Score of the Medical Outcomes Short Form-36 Questionnaire Version 2 (SF-36V2) at Week 12, 24, 36 and 52

The SF-36v2 contains 36 items and yields assessments of 8 domains of health-related quality of life: 1. Limitations in physical activities because of health problems. 2. Limitations in social activities because of physical or emotional problems. 3. Limitations in usual role activities because of physical health problems. 4. Bodily pain. 5. General mental health (psychological distress and well-being). 6. Limitations in usual role activities because of emotional problems. 7. Vitality (energy and fatigue). 8. General health perceptions. The scores from the 8 domains will be evaluated independently and aggregated into 2 norm-based summary component measures of physical and mental health. The recall period is the past 7 days. The score ranges from 0-100 for the summary components and for each domain, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.

Time frame: Baseline to Week 12, 24, 36 and 52

Population: Full Analysis Set: Included all participants randomized in the study and had observed data.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in the Physical Component Score of the Medical Outcomes Short Form-36 Questionnaire Version 2 (SF-36V2) at Week 12, 24, 36 and 52Week 124.349 score on a scaleStandard Deviation 7.526
PlaceboChange From Baseline in the Physical Component Score of the Medical Outcomes Short Form-36 Questionnaire Version 2 (SF-36V2) at Week 12, 24, 36 and 52Week 246.709 score on a scaleStandard Deviation 7.52
PlaceboChange From Baseline in the Physical Component Score of the Medical Outcomes Short Form-36 Questionnaire Version 2 (SF-36V2) at Week 12, 24, 36 and 52Week 365.391 score on a scaleStandard Deviation 9.04
PlaceboChange From Baseline in the Physical Component Score of the Medical Outcomes Short Form-36 Questionnaire Version 2 (SF-36V2) at Week 12, 24, 36 and 52Week 523.678 score on a scaleStandard Deviation 2.958
Efavaleukin Alfa Low DoseChange From Baseline in the Physical Component Score of the Medical Outcomes Short Form-36 Questionnaire Version 2 (SF-36V2) at Week 12, 24, 36 and 52Week 245.544 score on a scaleStandard Deviation 7.624
Efavaleukin Alfa Low DoseChange From Baseline in the Physical Component Score of the Medical Outcomes Short Form-36 Questionnaire Version 2 (SF-36V2) at Week 12, 24, 36 and 52Week 366.576 score on a scaleStandard Deviation 6.331
Efavaleukin Alfa Low DoseChange From Baseline in the Physical Component Score of the Medical Outcomes Short Form-36 Questionnaire Version 2 (SF-36V2) at Week 12, 24, 36 and 52Week 526.206 score on a scaleStandard Deviation 4.144
Efavaleukin Alfa Low DoseChange From Baseline in the Physical Component Score of the Medical Outcomes Short Form-36 Questionnaire Version 2 (SF-36V2) at Week 12, 24, 36 and 52Week 126.016 score on a scaleStandard Deviation 7.854
Efavaleukin Alfa Medium DoseChange From Baseline in the Physical Component Score of the Medical Outcomes Short Form-36 Questionnaire Version 2 (SF-36V2) at Week 12, 24, 36 and 52Week 367.524 score on a scaleStandard Deviation 8.988
Efavaleukin Alfa Medium DoseChange From Baseline in the Physical Component Score of the Medical Outcomes Short Form-36 Questionnaire Version 2 (SF-36V2) at Week 12, 24, 36 and 52Week 244.726 score on a scaleStandard Deviation 7.058
Efavaleukin Alfa Medium DoseChange From Baseline in the Physical Component Score of the Medical Outcomes Short Form-36 Questionnaire Version 2 (SF-36V2) at Week 12, 24, 36 and 52Week 528.724 score on a scaleStandard Deviation 9.159
Efavaleukin Alfa Medium DoseChange From Baseline in the Physical Component Score of the Medical Outcomes Short Form-36 Questionnaire Version 2 (SF-36V2) at Week 12, 24, 36 and 52Week 126.450 score on a scaleStandard Deviation 6.701
Efavaleukin Alfa High DoseChange From Baseline in the Physical Component Score of the Medical Outcomes Short Form-36 Questionnaire Version 2 (SF-36V2) at Week 12, 24, 36 and 52Week 526.252 score on a scaleStandard Deviation 12.226
Efavaleukin Alfa High DoseChange From Baseline in the Physical Component Score of the Medical Outcomes Short Form-36 Questionnaire Version 2 (SF-36V2) at Week 12, 24, 36 and 52Week 245.136 score on a scaleStandard Deviation 8.351
Efavaleukin Alfa High DoseChange From Baseline in the Physical Component Score of the Medical Outcomes Short Form-36 Questionnaire Version 2 (SF-36V2) at Week 12, 24, 36 and 52Week 122.615 score on a scaleStandard Deviation 7.622
Efavaleukin Alfa High DoseChange From Baseline in the Physical Component Score of the Medical Outcomes Short Form-36 Questionnaire Version 2 (SF-36V2) at Week 12, 24, 36 and 52Week 363.648 score on a scaleStandard Deviation 8.269
Secondary

Change From Baseline in the Physical Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52

The SF-36v2 contains 36 items and yields assessments of 8 domains of health-related quality of life: 1. Limitations in physical activities because of health problems. 2. Limitations in social activities because of physical or emotional problems. 3. Limitations in usual role activities because of physical health problems. 4. Bodily pain. 5. General mental health (psychological distress and well-being). 6. Limitations in usual role activities because of emotional problems. 7. Vitality (energy and fatigue). 8. General health perceptions. The scores from the 8 domains will be evaluated independently and aggregated into 2 norm-based summary component measures of physical and mental health. The recall period is the past 7 days. The score ranges from 0-100 for the summary components and for each domain, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.

Time frame: Baseline to Week 12, 24, 36 and 52

Population: Full Analysis Set: Included all participants randomized in the study and had observed data.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in the Physical Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 1214.460 score on a scaleStandard Deviation 21.532
PlaceboChange From Baseline in the Physical Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 3613.477 score on a scaleStandard Deviation 26.261
PlaceboChange From Baseline in the Physical Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 2420.469 score on a scaleStandard Deviation 23.048
PlaceboChange From Baseline in the Physical Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 528.750 score on a scaleStandard Deviation 14.083
Efavaleukin Alfa Low DoseChange From Baseline in the Physical Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 3610.713 score on a scaleStandard Deviation 20.078
Efavaleukin Alfa Low DoseChange From Baseline in the Physical Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 5215.714 score on a scaleStandard Deviation 13.973
Efavaleukin Alfa Low DoseChange From Baseline in the Physical Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 246.876 score on a scaleStandard Deviation 20.998
Efavaleukin Alfa Low DoseChange From Baseline in the Physical Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 127.963 score on a scaleStandard Deviation 15.888
Efavaleukin Alfa Medium DoseChange From Baseline in the Physical Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 2414.545 score on a scaleStandard Deviation 21.816
Efavaleukin Alfa Medium DoseChange From Baseline in the Physical Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 3616.786 score on a scaleStandard Deviation 29.91
Efavaleukin Alfa Medium DoseChange From Baseline in the Physical Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 1214.165 score on a scaleStandard Deviation 22.489
Efavaleukin Alfa Medium DoseChange From Baseline in the Physical Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 5218.183 score on a scaleStandard Deviation 28.919
Efavaleukin Alfa High DoseChange From Baseline in the Physical Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 5215.001 score on a scaleStandard Deviation 31.622
Efavaleukin Alfa High DoseChange From Baseline in the Physical Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 125.761 score on a scaleStandard Deviation 22.034
Efavaleukin Alfa High DoseChange From Baseline in the Physical Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 369.736 score on a scaleStandard Deviation 29.603
Efavaleukin Alfa High DoseChange From Baseline in the Physical Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 2410.607 score on a scaleStandard Deviation 24.036
Secondary

Change From Baseline in the Physical Health Domain Score of the Lupus Quality of Life (LupusQoL) at Week 12, 24, 36 and 52

The LupusQoL is a systemic lupus erythematosus (SLE)-specific health-related QoL instrument and consists of 8 domains: 1. Physical health. 2. Pain. 3. Planning. 4. Intimate relationships. 5. Burden to others. 6. Emotional health. 7. Body image. 8. Fatigue. The score for each domain ranges from 0-100, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.

Time frame: Baseline to Week 12, 24, 36 and 52

Population: Full Analysis Set: Included all participants randomized in the study and had observed data.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in the Physical Health Domain Score of the Lupus Quality of Life (LupusQoL) at Week 12, 24, 36 and 52Week 1213.7868 score on a scaleStandard Deviation 20.5586
PlaceboChange From Baseline in the Physical Health Domain Score of the Lupus Quality of Life (LupusQoL) at Week 12, 24, 36 and 52Week 2415.5172 score on a scaleStandard Deviation 23.777
PlaceboChange From Baseline in the Physical Health Domain Score of the Lupus Quality of Life (LupusQoL) at Week 12, 24, 36 and 52Week 3611.3636 score on a scaleStandard Deviation 20.6738
PlaceboChange From Baseline in the Physical Health Domain Score of the Lupus Quality of Life (LupusQoL) at Week 12, 24, 36 and 52Week 529.3750 score on a scaleStandard Deviation 11.8114
Efavaleukin Alfa Low DoseChange From Baseline in the Physical Health Domain Score of the Lupus Quality of Life (LupusQoL) at Week 12, 24, 36 and 52Week 249.5109 score on a scaleStandard Deviation 25.1501
Efavaleukin Alfa Low DoseChange From Baseline in the Physical Health Domain Score of the Lupus Quality of Life (LupusQoL) at Week 12, 24, 36 and 52Week 3613.4375 score on a scaleStandard Deviation 20.2549
Efavaleukin Alfa Low DoseChange From Baseline in the Physical Health Domain Score of the Lupus Quality of Life (LupusQoL) at Week 12, 24, 36 and 52Week 5220.8333 score on a scaleStandard Deviation 21.164
Efavaleukin Alfa Low DoseChange From Baseline in the Physical Health Domain Score of the Lupus Quality of Life (LupusQoL) at Week 12, 24, 36 and 52Week 1212.6202 score on a scaleStandard Deviation 18.9259
Efavaleukin Alfa Medium DoseChange From Baseline in the Physical Health Domain Score of the Lupus Quality of Life (LupusQoL) at Week 12, 24, 36 and 52Week 3618.7500 score on a scaleStandard Deviation 24.4404
Efavaleukin Alfa Medium DoseChange From Baseline in the Physical Health Domain Score of the Lupus Quality of Life (LupusQoL) at Week 12, 24, 36 and 52Week 2415.4688 score on a scaleStandard Deviation 17.7205
Efavaleukin Alfa Medium DoseChange From Baseline in the Physical Health Domain Score of the Lupus Quality of Life (LupusQoL) at Week 12, 24, 36 and 52Week 5215.6250 score on a scaleStandard Deviation 27.0994
Efavaleukin Alfa Medium DoseChange From Baseline in the Physical Health Domain Score of the Lupus Quality of Life (LupusQoL) at Week 12, 24, 36 and 52Week 1213.7784 score on a scaleStandard Deviation 18.3909
Efavaleukin Alfa High DoseChange From Baseline in the Physical Health Domain Score of the Lupus Quality of Life (LupusQoL) at Week 12, 24, 36 and 52Week 5210.6250 score on a scaleStandard Deviation 29.5437
Efavaleukin Alfa High DoseChange From Baseline in the Physical Health Domain Score of the Lupus Quality of Life (LupusQoL) at Week 12, 24, 36 and 52Week 2413.8542 score on a scaleStandard Deviation 25.3834
Efavaleukin Alfa High DoseChange From Baseline in the Physical Health Domain Score of the Lupus Quality of Life (LupusQoL) at Week 12, 24, 36 and 52Week 1211.5327 score on a scaleStandard Deviation 22.3595
Efavaleukin Alfa High DoseChange From Baseline in the Physical Health Domain Score of the Lupus Quality of Life (LupusQoL) at Week 12, 24, 36 and 52Week 365.7292 score on a scaleStandard Deviation 24.3304
Secondary

Change From Baseline in the Physical Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52

The SF-36v2 contains 36 items and yields assessments of 8 domains of health-related quality of life: 1. Limitations in physical activities because of health problems. 2. Limitations in social activities because of physical or emotional problems. 3. Limitations in usual role activities because of physical health problems. 4. Bodily pain. 5. General mental health (psychological distress and well-being). 6. Limitations in usual role activities because of emotional problems. 7. Vitality (energy and fatigue). 8. General health perceptions. The scores from the 8 domains will be evaluated independently and aggregated into 2 norm-based summary component measures of physical and mental health. The recall period is the past 7 days. The score ranges from 0-100 for the summary components and for each domain, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.

Time frame: Baseline to Week 12, 24, 36 and 52

Population: Full Analysis Set: Included all participants randomized in the study and had observed data.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in the Physical Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 1212.838 score on a scaleStandard Deviation 24.516
PlaceboChange From Baseline in the Physical Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 2418.359 score on a scaleStandard Deviation 22.221
PlaceboChange From Baseline in the Physical Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 3611.685 score on a scaleStandard Deviation 26.935
PlaceboChange From Baseline in the Physical Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 5211.719 score on a scaleStandard Deviation 15.468
Efavaleukin Alfa Low DoseChange From Baseline in the Physical Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 2414.323 score on a scaleStandard Deviation 26.29
Efavaleukin Alfa Low DoseChange From Baseline in the Physical Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 3614.881 score on a scaleStandard Deviation 26.917
Efavaleukin Alfa Low DoseChange From Baseline in the Physical Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 5218.750 score on a scaleStandard Deviation 14.878
Efavaleukin Alfa Low DoseChange From Baseline in the Physical Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 1215.509 score on a scaleStandard Deviation 26.081
Efavaleukin Alfa Medium DoseChange From Baseline in the Physical Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 3615.179 score on a scaleStandard Deviation 24.966
Efavaleukin Alfa Medium DoseChange From Baseline in the Physical Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 249.091 score on a scaleStandard Deviation 20.479
Efavaleukin Alfa Medium DoseChange From Baseline in the Physical Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 5219.318 score on a scaleStandard Deviation 25.381
Efavaleukin Alfa Medium DoseChange From Baseline in the Physical Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 1213.802 score on a scaleStandard Deviation 22.571
Efavaleukin Alfa High DoseChange From Baseline in the Physical Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 526.875 score on a scaleStandard Deviation 35.041
Efavaleukin Alfa High DoseChange From Baseline in the Physical Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 2415.909 score on a scaleStandard Deviation 23.804
Efavaleukin Alfa High DoseChange From Baseline in the Physical Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 126.929 score on a scaleStandard Deviation 21.899
Efavaleukin Alfa High DoseChange From Baseline in the Physical Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 367.895 score on a scaleStandard Deviation 29.377
Secondary

Change From Baseline in the Planning Domain Score of the LupusQoL at Week 12, 24, 36 and 52

The LupusQoL is a SLE-specific health-related QoL instrument and consists of 8 domains: 1. Physical health. 2. Pain. 3. Planning. 4. Intimate relationships. 5. Burden to others. 6. Emotional health. 7. Body image. 8. Fatigue. The score for each domain ranges from 0-100, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.

Time frame: Baseline to Week 12, 24, 36 and 52

Population: Full Analysis Set: Included all participants randomized in the study and had observed data.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in the Planning Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 129.804 score on a scaleStandard Deviation 23.071
PlaceboChange From Baseline in the Planning Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 2411.494 score on a scaleStandard Deviation 29.915
PlaceboChange From Baseline in the Planning Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 3612.500 score on a scaleStandard Deviation 30.834
PlaceboChange From Baseline in the Planning Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 5215.625 score on a scaleStandard Deviation 29.693
Efavaleukin Alfa Low DoseChange From Baseline in the Planning Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 2414.015 score on a scaleStandard Deviation 28.334
Efavaleukin Alfa Low DoseChange From Baseline in the Planning Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 369.211 score on a scaleStandard Deviation 23.553
Efavaleukin Alfa Low DoseChange From Baseline in the Planning Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 5215.000 score on a scaleStandard Deviation 18.066
Efavaleukin Alfa Low DoseChange From Baseline in the Planning Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 1217.000 score on a scaleStandard Deviation 23.259
Efavaleukin Alfa Medium DoseChange From Baseline in the Planning Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 3613.462 score on a scaleStandard Deviation 23.457
Efavaleukin Alfa Medium DoseChange From Baseline in the Planning Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 2415.833 score on a scaleStandard Deviation 22.926
Efavaleukin Alfa Medium DoseChange From Baseline in the Planning Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 5210.606 score on a scaleStandard Deviation 25.025
Efavaleukin Alfa Medium DoseChange From Baseline in the Planning Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 1213.636 score on a scaleStandard Deviation 23.925
Efavaleukin Alfa High DoseChange From Baseline in the Planning Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 5212.500 score on a scaleStandard Deviation 27.287
Efavaleukin Alfa High DoseChange From Baseline in the Planning Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 2414.722 score on a scaleStandard Deviation 22.391
Efavaleukin Alfa High DoseChange From Baseline in the Planning Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 127.143 score on a scaleStandard Deviation 23.825
Efavaleukin Alfa High DoseChange From Baseline in the Planning Domain Score of the LupusQoL at Week 12, 24, 36 and 52Week 365.093 score on a scaleStandard Deviation 29.861
Secondary

Change From Baseline in the Social Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52

The SF-36v2 contains 36 items and yields assessments of 8 domains of health-related quality of life: 1. Limitations in physical activities because of health problems. 2. Limitations in social activities because of physical or emotional problems. 3. Limitations in usual role activities because of physical health problems. 4. Bodily pain. 5. General mental health (psychological distress and well-being). 6. Limitations in usual role activities because of emotional problems. 7. Vitality (energy and fatigue). 8. General health perceptions. The scores from the 8 domains will be evaluated independently and aggregated into 2 norm-based summary component measures of physical and mental health. The recall period is the past 7 days. The score ranges from 0-100 for the summary components and for each domain, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.

Time frame: Baseline to Week 12, 24, 36 and 52

Population: Full Analysis Set: Included all participants randomized in the study and had observed data.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in the Social Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 1215.54 score on a scaleStandard Deviation 29.82
PlaceboChange From Baseline in the Social Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 2421.88 score on a scaleStandard Deviation 33.15
PlaceboChange From Baseline in the Social Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 3613.04 score on a scaleStandard Deviation 38.71
PlaceboChange From Baseline in the Social Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 5210.94 score on a scaleStandard Deviation 28.69
Efavaleukin Alfa Low DoseChange From Baseline in the Social Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 2413.02 score on a scaleStandard Deviation 23.16
Efavaleukin Alfa Low DoseChange From Baseline in the Social Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 368.93 score on a scaleStandard Deviation 26.26
Efavaleukin Alfa Low DoseChange From Baseline in the Social Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 5221.43 score on a scaleStandard Deviation 20.04
Efavaleukin Alfa Low DoseChange From Baseline in the Social Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 129.72 score on a scaleStandard Deviation 22.29
Efavaleukin Alfa Medium DoseChange From Baseline in the Social Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 3616.96 score on a scaleStandard Deviation 32.75
Efavaleukin Alfa Medium DoseChange From Baseline in the Social Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 243.98 score on a scaleStandard Deviation 24.52
Efavaleukin Alfa Medium DoseChange From Baseline in the Social Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 525.68 score on a scaleStandard Deviation 35.95
Efavaleukin Alfa Medium DoseChange From Baseline in the Social Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 127.81 score on a scaleStandard Deviation 26.79
Efavaleukin Alfa High DoseChange From Baseline in the Social Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 52-1.25 score on a scaleStandard Deviation 36.54
Efavaleukin Alfa High DoseChange From Baseline in the Social Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 249.47 score on a scaleStandard Deviation 25.39
Efavaleukin Alfa High DoseChange From Baseline in the Social Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 122.17 score on a scaleStandard Deviation 21.46
Efavaleukin Alfa High DoseChange From Baseline in the Social Role Functioning Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 361.32 score on a scaleStandard Deviation 29.14
Secondary

Change From Baseline in the Vitality Domain Score of the SF-36V2 at Week 12, 24, 36 and 52

The SF-36v2 contains 36 items and yields assessments of 8 domains of health-related quality of life: 1. Limitations in physical activities because of health problems. 2. Limitations in social activities because of physical or emotional problems. 3. Limitations in usual role activities because of physical health problems. 4. Bodily pain. 5. General mental health (psychological distress and well-being). 6. Limitations in usual role activities because of emotional problems. 7. Vitality (energy and fatigue). 8. General health perceptions. The scores from the 8 domains will be evaluated independently and aggregated into 2 norm-based summary component measures of physical and mental health. The recall period is the past 7 days. The score ranges from 0-100 for the summary components and for each domain, with higher scores indicating better outcomes. A positive change from baseline indicates an improvement in outcomes.

Time frame: Baseline to Week 12, 24, 36 and 52

Population: Full Analysis Set: Included all participants randomized in the study and had observed data.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange From Baseline in the Vitality Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 1210.642 score on a scaleStandard Deviation 20.405
PlaceboChange From Baseline in the Vitality Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 2413.477 score on a scaleStandard Deviation 23.283
PlaceboChange From Baseline in the Vitality Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 3611.685 score on a scaleStandard Deviation 26.935
PlaceboChange From Baseline in the Vitality Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 5215.625 score on a scaleStandard Deviation 19.48
Efavaleukin Alfa Low DoseChange From Baseline in the Vitality Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 248.333 score on a scaleStandard Deviation 23.936
Efavaleukin Alfa Low DoseChange From Baseline in the Vitality Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 366.548 score on a scaleStandard Deviation 19.811
Efavaleukin Alfa Low DoseChange From Baseline in the Vitality Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 524.464 score on a scaleStandard Deviation 22.16
Efavaleukin Alfa Low DoseChange From Baseline in the Vitality Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 1212.037 score on a scaleStandard Deviation 21.225
Efavaleukin Alfa Medium DoseChange From Baseline in the Vitality Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 3614.732 score on a scaleStandard Deviation 23.718
Efavaleukin Alfa Medium DoseChange From Baseline in the Vitality Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 248.523 score on a scaleStandard Deviation 20.912
Efavaleukin Alfa Medium DoseChange From Baseline in the Vitality Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 529.659 score on a scaleStandard Deviation 28.141
Efavaleukin Alfa Medium DoseChange From Baseline in the Vitality Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 1215.365 score on a scaleStandard Deviation 23.384
Efavaleukin Alfa High DoseChange From Baseline in the Vitality Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 5213.750 score on a scaleStandard Deviation 26.484
Efavaleukin Alfa High DoseChange From Baseline in the Vitality Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 2412.879 score on a scaleStandard Deviation 19.884
Efavaleukin Alfa High DoseChange From Baseline in the Vitality Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 127.609 score on a scaleStandard Deviation 20.536
Efavaleukin Alfa High DoseChange From Baseline in the Vitality Domain Score of the SF-36V2 at Week 12, 24, 36 and 52Week 365.592 score on a scaleStandard Deviation 22.812
Secondary

Number of Participants Who Achieved a BICLA Response at Week 24

A participant achieved a BICLA response if all the following criteria were met: * At least 1 gradation of improvement in baseline BILAG domain scores in all body systems with moderate or severe disease activity at entry and no \> 1 BILAG B domain scores compared with baseline. The BILAG index evaluates disease activity in 9 separate organ systems. Each of the organ systems are allocated an alphabetical score of A (most active), B (moderate activity), C (minor activity), D (stable) or E (never present). * No worsening of the hSLEDAI score from baseline (scale 0-105, with higher scores indicating more disease activity). * \< 0.3-points deterioration from baseline in PGA VAS (scale 0 to 3, with higher scores indicating more severe disease). * No initiation of non-protocol treatment.

Time frame: Week 24

Population: Full Analysis Set: Included all participants randomized in the study. Only participants who had the opportunity to complete the visit by the date of the study termination decision being communicated to sites were included.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants Who Achieved a BICLA Response at Week 2417 Participants
Efavaleukin Alfa Low DoseNumber of Participants Who Achieved a BICLA Response at Week 2412 Participants
Efavaleukin Alfa Medium DoseNumber of Participants Who Achieved a BICLA Response at Week 245 Participants
Efavaleukin Alfa High DoseNumber of Participants Who Achieved a BICLA Response at Week 2417 Participants
Secondary

Number of Participants Who Achieved a BILAG-based Composite Lupus Assessment (BICLA) Response at Week 52

A participant achieved a BICLA response if all the following criteria were met: * At least 1 gradation of improvement in baseline BILAG domain scores in all body systems with moderate or severe disease activity at entry and no \> 1 BILAG B domain scores compared with baseline. The BILAG index evaluates disease activity in 9 separate organ systems. Each of the organ systems are allocated an alphabetical score of A (most active), B (moderate activity), C (minor activity), D (stable) or E (never present). * No worsening of the hSLEDAI score from baseline (scale 0-105, with higher scores indicating more disease activity). * \< 0.3-points deterioration from baseline in PGA VAS (scale 0 to 3, with higher scores indicating more severe disease). * No initiation of non-protocol treatment.

Time frame: Week 52

Population: Full Analysis Set: Included all participants randomized in the study. Only participants who had the opportunity to complete the visit by the date of the study termination decision being communicated to sites were included. Participants were considered non-responders for using more than protocol-permitted therapies.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants Who Achieved a BILAG-based Composite Lupus Assessment (BICLA) Response at Week 526 Participants
Efavaleukin Alfa Low DoseNumber of Participants Who Achieved a BILAG-based Composite Lupus Assessment (BICLA) Response at Week 522 Participants
Efavaleukin Alfa Medium DoseNumber of Participants Who Achieved a BILAG-based Composite Lupus Assessment (BICLA) Response at Week 524 Participants
Efavaleukin Alfa High DoseNumber of Participants Who Achieved a BILAG-based Composite Lupus Assessment (BICLA) Response at Week 524 Participants
Secondary

Number of Participants Who Achieved a Lupus Low Disease Activity State (LLDAS) Response at Week 52

A participant achieved an LLDAS response if all the following criteria were met: * hSLEDAI ≤ 4 (scale 0-105, higher scores indicating more disease activity) with no activity in major organ systems (renal \[proteinuria, hematuria, pyuria, urinary casts\], central nervous system \[seizure, psychosis, organic brain syndrome, cranial nerve disorder, cerebrovascular accident\], cardiopulmonary \[pericarditis, pleurisy\], vasculitis and fever) & no hemolytic anemia or gastrointestinal activity in BILAG. The BILAG index evaluates disease activity in 9 separate organ systems. Each of the organ systems are allocated an alphabetical score of A (most active) to E (never present). * No new lupus disease activity compared with previous assessment defined as no new descriptor scores in hSLEDAI. * A score of \< 1 in PGA VAS score (scale 0 to 3, with higher scores indicating more severe disease). * Current prednisolone dose ≤ 7.5 mg daily. * No increase or initiation of immunosuppressive drugs.

Time frame: Week 52

Population: Full Analysis Set: Included all participants randomized in the study. Only participants who had the opportunity to complete the visit by the date of the study termination decision being communicated to sites were included. Participants were considered non-responders for using more than protocol-permitted therapies.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants Who Achieved a Lupus Low Disease Activity State (LLDAS) Response at Week 522 Participants
Efavaleukin Alfa Low DoseNumber of Participants Who Achieved a Lupus Low Disease Activity State (LLDAS) Response at Week 523 Participants
Efavaleukin Alfa Medium DoseNumber of Participants Who Achieved a Lupus Low Disease Activity State (LLDAS) Response at Week 523 Participants
Efavaleukin Alfa High DoseNumber of Participants Who Achieved a Lupus Low Disease Activity State (LLDAS) Response at Week 521 Participants
Secondary

Number of Participants Who Achieved a SRI-4 Response at Week 24

A participant achieved an SRI-4 response if all the following criteria were met: * ≥ 4-point reduction from baseline in hSLEDAI score (scale 0-105, with higher scores indicating more disease activity). * No new BILAG A score and no \> 1 new BILAG B organ domain scores compared with baseline. The BILAG index evaluates disease activity in 9 separate organ systems. Each of the organ systems are allocated an alphabetical score of A (most active), B (moderate activity), C (minor activity), D (stable) or E (never present). * \< 0.3-points deterioration from baseline in PGA VAS score (scale 0 to 3, with higher scores indicating more severe disease). Participants were considered non-responders for using more than protocol-permitted therapies.

Time frame: Week 24

Population: Full Analysis Set: Included all participants randomized in the study. Only participants who had the opportunity to complete the visit by the date of the study termination decision being communicated to sites were included.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants Who Achieved a SRI-4 Response at Week 2420 Participants
Efavaleukin Alfa Low DoseNumber of Participants Who Achieved a SRI-4 Response at Week 2413 Participants
Efavaleukin Alfa Medium DoseNumber of Participants Who Achieved a SRI-4 Response at Week 2413 Participants
Efavaleukin Alfa High DoseNumber of Participants Who Achieved a SRI-4 Response at Week 2421 Participants
Secondary

Number of Participants Who Experienced a Treatment-emergent Adverse Event (TEAE)

A TEAE was defined as any untoward medical occurrence in a clinical study participant irrespective of a causal relationship with the study treatment and had emerged or worsened during treatment. A serious TEAE was defined as any untoward medical occurrence that, met at least 1 of the following criteria: * Resulted in death (fatal). * Was immediately life-threatening. * Required in-patient hospitalization or prolongation of existing hospitalization. * Resulted in persistent or significant disability/incapacity. * Was a congenital anomaly/birth defect. * Was any other medically important serious event. Clinically significant changes from baseline in laboratory values and vital signs were also recorded as TEAEs.

Time frame: Day 1 to Week 56

Population: Safety Analysis Set: All randomized participants who received at least 1 dose of investigational product. After randomization, 1 participant received more than their planned medium dose of efavaleukin alfa in error, therefore the participant is also counted in the efavaleukin alfa high dose arm.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants Who Experienced a Treatment-emergent Adverse Event (TEAE)TEAE29 Participants
PlaceboNumber of Participants Who Experienced a Treatment-emergent Adverse Event (TEAE)Serious TEAE4 Participants
Efavaleukin Alfa Low DoseNumber of Participants Who Experienced a Treatment-emergent Adverse Event (TEAE)Serious TEAE3 Participants
Efavaleukin Alfa Low DoseNumber of Participants Who Experienced a Treatment-emergent Adverse Event (TEAE)TEAE29 Participants
Efavaleukin Alfa Medium DoseNumber of Participants Who Experienced a Treatment-emergent Adverse Event (TEAE)TEAE33 Participants
Efavaleukin Alfa Medium DoseNumber of Participants Who Experienced a Treatment-emergent Adverse Event (TEAE)Serious TEAE4 Participants
Efavaleukin Alfa High DoseNumber of Participants Who Experienced a Treatment-emergent Adverse Event (TEAE)TEAE55 Participants
Efavaleukin Alfa High DoseNumber of Participants Who Experienced a Treatment-emergent Adverse Event (TEAE)Serious TEAE3 Participants
Secondary

Number of Participants With a hSLEDAI Response at Week 24 and Week 52

The hSLEDAI is a global index that evaluates disease activity and includes both laboratory and clinical parameters. The score ranges from 0 to 105, with higher scores indicating more disease activity. A participant achieved a hSLEDAI response if there was a ≥ 4-point reduction in hSLEDAI from baseline.

Time frame: Week 24 and Week 52

Population: Full Analysis Set: Included all participants randomized in the study. Only participants who had the opportunity to complete the visit by the date of the study termination decision being communicated to sites were included.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants With a hSLEDAI Response at Week 24 and Week 52Week 2423 Participants
PlaceboNumber of Participants With a hSLEDAI Response at Week 24 and Week 52Week 528 Participants
Efavaleukin Alfa Low DoseNumber of Participants With a hSLEDAI Response at Week 24 and Week 52Week 524 Participants
Efavaleukin Alfa Low DoseNumber of Participants With a hSLEDAI Response at Week 24 and Week 52Week 2414 Participants
Efavaleukin Alfa Medium DoseNumber of Participants With a hSLEDAI Response at Week 24 and Week 52Week 2413 Participants
Efavaleukin Alfa Medium DoseNumber of Participants With a hSLEDAI Response at Week 24 and Week 52Week 527 Participants
Efavaleukin Alfa High DoseNumber of Participants With a hSLEDAI Response at Week 24 and Week 52Week 2423 Participants
Efavaleukin Alfa High DoseNumber of Participants With a hSLEDAI Response at Week 24 and Week 52Week 526 Participants
Secondary

Number of Participants With an Improvement From Baseline in Cutaneous Lupus Erythematosus Area and Severity Index (CLASI) Activity Score ≥ 50% at Week 8, 12, 24, 36, and 52 in Participants With a CLASI Activity Score ≥ 8 at Baseline

The CLASI consists of 2 scores, the first summarizes the activity of the disease while the second is a measure of the damage done by the disease. Activity is scored based on erythema, scale/hyperkeratosis, mucous membrane involvement, acute hair loss and non-scarring alopecia. The total score ranges from 0-70, with higher scores indicating more severe disease.

Time frame: Weeks 8, 12, 24, 36 and 52

Population: Full Analysis Set: Included all participants randomized in the study. Only participants who had a CLASI activity score ≥ 8 at baseline and the opportunity to complete the visit by the date of the study termination decision being communicated to sites were included.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants With an Improvement From Baseline in Cutaneous Lupus Erythematosus Area and Severity Index (CLASI) Activity Score ≥ 50% at Week 8, 12, 24, 36, and 52 in Participants With a CLASI Activity Score ≥ 8 at BaselineWeek 365 Participants
PlaceboNumber of Participants With an Improvement From Baseline in Cutaneous Lupus Erythematosus Area and Severity Index (CLASI) Activity Score ≥ 50% at Week 8, 12, 24, 36, and 52 in Participants With a CLASI Activity Score ≥ 8 at BaselineWeek 126 Participants
PlaceboNumber of Participants With an Improvement From Baseline in Cutaneous Lupus Erythematosus Area and Severity Index (CLASI) Activity Score ≥ 50% at Week 8, 12, 24, 36, and 52 in Participants With a CLASI Activity Score ≥ 8 at BaselineWeek 523 Participants
PlaceboNumber of Participants With an Improvement From Baseline in Cutaneous Lupus Erythematosus Area and Severity Index (CLASI) Activity Score ≥ 50% at Week 8, 12, 24, 36, and 52 in Participants With a CLASI Activity Score ≥ 8 at BaselineWeek 244 Participants
PlaceboNumber of Participants With an Improvement From Baseline in Cutaneous Lupus Erythematosus Area and Severity Index (CLASI) Activity Score ≥ 50% at Week 8, 12, 24, 36, and 52 in Participants With a CLASI Activity Score ≥ 8 at BaselineWeek 82 Participants
Efavaleukin Alfa Low DoseNumber of Participants With an Improvement From Baseline in Cutaneous Lupus Erythematosus Area and Severity Index (CLASI) Activity Score ≥ 50% at Week 8, 12, 24, 36, and 52 in Participants With a CLASI Activity Score ≥ 8 at BaselineWeek 244 Participants
Efavaleukin Alfa Low DoseNumber of Participants With an Improvement From Baseline in Cutaneous Lupus Erythematosus Area and Severity Index (CLASI) Activity Score ≥ 50% at Week 8, 12, 24, 36, and 52 in Participants With a CLASI Activity Score ≥ 8 at BaselineWeek 365 Participants
Efavaleukin Alfa Low DoseNumber of Participants With an Improvement From Baseline in Cutaneous Lupus Erythematosus Area and Severity Index (CLASI) Activity Score ≥ 50% at Week 8, 12, 24, 36, and 52 in Participants With a CLASI Activity Score ≥ 8 at BaselineWeek 520 Participants
Efavaleukin Alfa Low DoseNumber of Participants With an Improvement From Baseline in Cutaneous Lupus Erythematosus Area and Severity Index (CLASI) Activity Score ≥ 50% at Week 8, 12, 24, 36, and 52 in Participants With a CLASI Activity Score ≥ 8 at BaselineWeek 122 Participants
Efavaleukin Alfa Low DoseNumber of Participants With an Improvement From Baseline in Cutaneous Lupus Erythematosus Area and Severity Index (CLASI) Activity Score ≥ 50% at Week 8, 12, 24, 36, and 52 in Participants With a CLASI Activity Score ≥ 8 at BaselineWeek 81 Participants
Efavaleukin Alfa Medium DoseNumber of Participants With an Improvement From Baseline in Cutaneous Lupus Erythematosus Area and Severity Index (CLASI) Activity Score ≥ 50% at Week 8, 12, 24, 36, and 52 in Participants With a CLASI Activity Score ≥ 8 at BaselineWeek 245 Participants
Efavaleukin Alfa Medium DoseNumber of Participants With an Improvement From Baseline in Cutaneous Lupus Erythematosus Area and Severity Index (CLASI) Activity Score ≥ 50% at Week 8, 12, 24, 36, and 52 in Participants With a CLASI Activity Score ≥ 8 at BaselineWeek 85 Participants
Efavaleukin Alfa Medium DoseNumber of Participants With an Improvement From Baseline in Cutaneous Lupus Erythematosus Area and Severity Index (CLASI) Activity Score ≥ 50% at Week 8, 12, 24, 36, and 52 in Participants With a CLASI Activity Score ≥ 8 at BaselineWeek 125 Participants
Efavaleukin Alfa Medium DoseNumber of Participants With an Improvement From Baseline in Cutaneous Lupus Erythematosus Area and Severity Index (CLASI) Activity Score ≥ 50% at Week 8, 12, 24, 36, and 52 in Participants With a CLASI Activity Score ≥ 8 at BaselineWeek 364 Participants
Efavaleukin Alfa Medium DoseNumber of Participants With an Improvement From Baseline in Cutaneous Lupus Erythematosus Area and Severity Index (CLASI) Activity Score ≥ 50% at Week 8, 12, 24, 36, and 52 in Participants With a CLASI Activity Score ≥ 8 at BaselineWeek 523 Participants
Efavaleukin Alfa High DoseNumber of Participants With an Improvement From Baseline in Cutaneous Lupus Erythematosus Area and Severity Index (CLASI) Activity Score ≥ 50% at Week 8, 12, 24, 36, and 52 in Participants With a CLASI Activity Score ≥ 8 at BaselineWeek 365 Participants
Efavaleukin Alfa High DoseNumber of Participants With an Improvement From Baseline in Cutaneous Lupus Erythematosus Area and Severity Index (CLASI) Activity Score ≥ 50% at Week 8, 12, 24, 36, and 52 in Participants With a CLASI Activity Score ≥ 8 at BaselineWeek 127 Participants
Efavaleukin Alfa High DoseNumber of Participants With an Improvement From Baseline in Cutaneous Lupus Erythematosus Area and Severity Index (CLASI) Activity Score ≥ 50% at Week 8, 12, 24, 36, and 52 in Participants With a CLASI Activity Score ≥ 8 at BaselineWeek 89 Participants
Efavaleukin Alfa High DoseNumber of Participants With an Improvement From Baseline in Cutaneous Lupus Erythematosus Area and Severity Index (CLASI) Activity Score ≥ 50% at Week 8, 12, 24, 36, and 52 in Participants With a CLASI Activity Score ≥ 8 at BaselineWeek 246 Participants
Efavaleukin Alfa High DoseNumber of Participants With an Improvement From Baseline in Cutaneous Lupus Erythematosus Area and Severity Index (CLASI) Activity Score ≥ 50% at Week 8, 12, 24, 36, and 52 in Participants With a CLASI Activity Score ≥ 8 at BaselineWeek 523 Participants
Secondary

Number of Participants With an Improvement From Baseline in Tender and Swollen Joint Count ≥ 50% at Weeks 8, 12, 24, 36, and 52 in Participants With ≥ 6 Tender and Swollen Joints in Hands and Wrists

The swollen and tender join count assessments were performed at the site by an experienced independent and blinded joint evaluator. Joints in hands and wrists were scored for the simultaneous presence (1) or absence (0) of swelling and tenderness. Scores ranged from 0-28. A higher score indicates more severe disease.

Time frame: Weeks 8, 12, 24, 36 and 52

Population: Full Analysis Set: Full Analysis Set: Included all participants randomized in the study. Only participants who had ≥ 6 tender and swollen joints involving hands and wrists at baseline and the opportunity to complete the visit by the date of the study termination decision being communicated to sites were included.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants With an Improvement From Baseline in Tender and Swollen Joint Count ≥ 50% at Weeks 8, 12, 24, 36, and 52 in Participants With ≥ 6 Tender and Swollen Joints in Hands and WristsWeek 3611 Participants
PlaceboNumber of Participants With an Improvement From Baseline in Tender and Swollen Joint Count ≥ 50% at Weeks 8, 12, 24, 36, and 52 in Participants With ≥ 6 Tender and Swollen Joints in Hands and WristsWeek 1216 Participants
PlaceboNumber of Participants With an Improvement From Baseline in Tender and Swollen Joint Count ≥ 50% at Weeks 8, 12, 24, 36, and 52 in Participants With ≥ 6 Tender and Swollen Joints in Hands and WristsWeek 522 Participants
PlaceboNumber of Participants With an Improvement From Baseline in Tender and Swollen Joint Count ≥ 50% at Weeks 8, 12, 24, 36, and 52 in Participants With ≥ 6 Tender and Swollen Joints in Hands and WristsWeek 2413 Participants
PlaceboNumber of Participants With an Improvement From Baseline in Tender and Swollen Joint Count ≥ 50% at Weeks 8, 12, 24, 36, and 52 in Participants With ≥ 6 Tender and Swollen Joints in Hands and WristsWeek 816 Participants
Efavaleukin Alfa Low DoseNumber of Participants With an Improvement From Baseline in Tender and Swollen Joint Count ≥ 50% at Weeks 8, 12, 24, 36, and 52 in Participants With ≥ 6 Tender and Swollen Joints in Hands and WristsWeek 249 Participants
Efavaleukin Alfa Low DoseNumber of Participants With an Improvement From Baseline in Tender and Swollen Joint Count ≥ 50% at Weeks 8, 12, 24, 36, and 52 in Participants With ≥ 6 Tender and Swollen Joints in Hands and WristsWeek 368 Participants
Efavaleukin Alfa Low DoseNumber of Participants With an Improvement From Baseline in Tender and Swollen Joint Count ≥ 50% at Weeks 8, 12, 24, 36, and 52 in Participants With ≥ 6 Tender and Swollen Joints in Hands and WristsWeek 521 Participants
Efavaleukin Alfa Low DoseNumber of Participants With an Improvement From Baseline in Tender and Swollen Joint Count ≥ 50% at Weeks 8, 12, 24, 36, and 52 in Participants With ≥ 6 Tender and Swollen Joints in Hands and WristsWeek 127 Participants
Efavaleukin Alfa Low DoseNumber of Participants With an Improvement From Baseline in Tender and Swollen Joint Count ≥ 50% at Weeks 8, 12, 24, 36, and 52 in Participants With ≥ 6 Tender and Swollen Joints in Hands and WristsWeek 88 Participants
Efavaleukin Alfa Medium DoseNumber of Participants With an Improvement From Baseline in Tender and Swollen Joint Count ≥ 50% at Weeks 8, 12, 24, 36, and 52 in Participants With ≥ 6 Tender and Swollen Joints in Hands and WristsWeek 249 Participants
Efavaleukin Alfa Medium DoseNumber of Participants With an Improvement From Baseline in Tender and Swollen Joint Count ≥ 50% at Weeks 8, 12, 24, 36, and 52 in Participants With ≥ 6 Tender and Swollen Joints in Hands and WristsWeek 88 Participants
Efavaleukin Alfa Medium DoseNumber of Participants With an Improvement From Baseline in Tender and Swollen Joint Count ≥ 50% at Weeks 8, 12, 24, 36, and 52 in Participants With ≥ 6 Tender and Swollen Joints in Hands and WristsWeek 127 Participants
Efavaleukin Alfa Medium DoseNumber of Participants With an Improvement From Baseline in Tender and Swollen Joint Count ≥ 50% at Weeks 8, 12, 24, 36, and 52 in Participants With ≥ 6 Tender and Swollen Joints in Hands and WristsWeek 368 Participants
Efavaleukin Alfa Medium DoseNumber of Participants With an Improvement From Baseline in Tender and Swollen Joint Count ≥ 50% at Weeks 8, 12, 24, 36, and 52 in Participants With ≥ 6 Tender and Swollen Joints in Hands and WristsWeek 527 Participants
Efavaleukin Alfa High DoseNumber of Participants With an Improvement From Baseline in Tender and Swollen Joint Count ≥ 50% at Weeks 8, 12, 24, 36, and 52 in Participants With ≥ 6 Tender and Swollen Joints in Hands and WristsWeek 363 Participants
Efavaleukin Alfa High DoseNumber of Participants With an Improvement From Baseline in Tender and Swollen Joint Count ≥ 50% at Weeks 8, 12, 24, 36, and 52 in Participants With ≥ 6 Tender and Swollen Joints in Hands and WristsWeek 1213 Participants
Efavaleukin Alfa High DoseNumber of Participants With an Improvement From Baseline in Tender and Swollen Joint Count ≥ 50% at Weeks 8, 12, 24, 36, and 52 in Participants With ≥ 6 Tender and Swollen Joints in Hands and WristsWeek 813 Participants
Efavaleukin Alfa High DoseNumber of Participants With an Improvement From Baseline in Tender and Swollen Joint Count ≥ 50% at Weeks 8, 12, 24, 36, and 52 in Participants With ≥ 6 Tender and Swollen Joints in Hands and WristsWeek 2411 Participants
Efavaleukin Alfa High DoseNumber of Participants With an Improvement From Baseline in Tender and Swollen Joint Count ≥ 50% at Weeks 8, 12, 24, 36, and 52 in Participants With ≥ 6 Tender and Swollen Joints in Hands and WristsWeek 523 Participants
Secondary

Number of Participants With a Reduction of Oral Corticosteroids (OCS) to ≤ 7.5 mg/Day by Week 44 and Sustained Through Week 52 in Participants With a Baseline OCS Dose ≥ 10 mg/Day

Participants taking OCS could begin tapering OCS after the Week 12 assessment up to the Week 44 assessment with initiation of tapering based upon clinical judgement of the treating physician. The tapering schedule was at the discretion of the investigator but should not have been tapered more than 20% of the prior dose per week. Tapering OCS before Week 12 was not encouraged but may have been allowed based upon investigator's judgement. Between weeks 44 and 52, the OCS dosing must again have remained stable.

Time frame: Baseline to Week 52

Population: Full Analysis Set: Included all participants randomized in the study. Only participants with a baseline OCS dose ≥ 10 mg/day and had the opportunity to complete the visit by the date of the study termination decision being communicated to sites were included.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants With a Reduction of Oral Corticosteroids (OCS) to ≤ 7.5 mg/Day by Week 44 and Sustained Through Week 52 in Participants With a Baseline OCS Dose ≥ 10 mg/Day0 Participants
Efavaleukin Alfa Low DoseNumber of Participants With a Reduction of Oral Corticosteroids (OCS) to ≤ 7.5 mg/Day by Week 44 and Sustained Through Week 52 in Participants With a Baseline OCS Dose ≥ 10 mg/Day1 Participants
Efavaleukin Alfa Medium DoseNumber of Participants With a Reduction of Oral Corticosteroids (OCS) to ≤ 7.5 mg/Day by Week 44 and Sustained Through Week 52 in Participants With a Baseline OCS Dose ≥ 10 mg/Day2 Participants
Efavaleukin Alfa High DoseNumber of Participants With a Reduction of Oral Corticosteroids (OCS) to ≤ 7.5 mg/Day by Week 44 and Sustained Through Week 52 in Participants With a Baseline OCS Dose ≥ 10 mg/Day0 Participants
Secondary

Serum Efavaleukin Alfa Concentrations by Timepoint

Serum efavaleukin alfa concentrations by timepoint after multiple dose subcutaneous administration of efavaleukin alfa to participants with active systemic lupus erythematosus. Lower limit of quantification= 0.100 ng/mL.

Time frame: Day 1: 6-24 and 48-96 hrs, Day 29, Day 43: 6-24 and 48-96 hrs, Day 85, Day 169, Day 253, Day 309, and Day 365

Population: The PK Concentration Analysis Set is defined as the subset of participants in the Safety Analysis Set who had at least 1 evaluable serum concentration (including results below the level of detection) of investigational product. PK concentration data will be analyzed according to the actual treatment received.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboSerum Efavaleukin Alfa Concentrations by TimepointDay 1690.349 ng/mLStandard Deviation 1.1
PlaceboSerum Efavaleukin Alfa Concentrations by TimepointDay 43: 6-24 hrs4.34 ng/mLStandard Deviation 5.55
PlaceboSerum Efavaleukin Alfa Concentrations by TimepointDay 3090.252 ng/mLStandard Deviation 0.502
PlaceboSerum Efavaleukin Alfa Concentrations by TimepointDay 850.0577 ng/mLStandard Deviation 0.223
PlaceboSerum Efavaleukin Alfa Concentrations by TimepointDay 43: 48-96 hrs2.80 ng/mLStandard Deviation 4.39
PlaceboSerum Efavaleukin Alfa Concentrations by TimepointDay 1: 48-96 hrs2.34 ng/mLStandard Deviation 2.52
PlaceboSerum Efavaleukin Alfa Concentrations by TimepointDay 1: 6-24 hrs5.46 ng/mLStandard Deviation 5.18
PlaceboSerum Efavaleukin Alfa Concentrations by TimepointDay 2530.530 ng/mLStandard Deviation 1.48
PlaceboSerum Efavaleukin Alfa Concentrations by TimepointDay 290.0201 ng/mLStandard Deviation 0.0649
PlaceboSerum Efavaleukin Alfa Concentrations by TimepointDay 3650.00 ng/mLStandard Deviation 0
Efavaleukin Alfa Low DoseSerum Efavaleukin Alfa Concentrations by TimepointDay 850.00712 ng/mLStandard Deviation 0.0293
Efavaleukin Alfa Low DoseSerum Efavaleukin Alfa Concentrations by TimepointDay 1: 6-24 hrs12.8 ng/mLStandard Deviation 12.3
Efavaleukin Alfa Low DoseSerum Efavaleukin Alfa Concentrations by TimepointDay 1: 48-96 hrs5.93 ng/mLStandard Deviation 6.45
Efavaleukin Alfa Low DoseSerum Efavaleukin Alfa Concentrations by TimepointDay 290.0179 ng/mLStandard Deviation 0.0496
Efavaleukin Alfa Low DoseSerum Efavaleukin Alfa Concentrations by TimepointDay 43: 6-24 hrs13.9 ng/mLStandard Deviation 11.7
Efavaleukin Alfa Low DoseSerum Efavaleukin Alfa Concentrations by TimepointDay 43: 48-96 hrs12.7 ng/mLStandard Deviation 17.2
Efavaleukin Alfa Low DoseSerum Efavaleukin Alfa Concentrations by TimepointDay 1690.0588 ng/mLStandard Deviation 0.133
Efavaleukin Alfa Low DoseSerum Efavaleukin Alfa Concentrations by TimepointDay 2530.155 ng/mLStandard Deviation 0.221
Efavaleukin Alfa Low DoseSerum Efavaleukin Alfa Concentrations by TimepointDay 3090.0558 ng/mLStandard Deviation 0.167
Efavaleukin Alfa Low DoseSerum Efavaleukin Alfa Concentrations by TimepointDay 3650.00 ng/mLStandard Deviation 0
Efavaleukin Alfa Medium DoseSerum Efavaleukin Alfa Concentrations by TimepointDay 3650.136 ng/mLStandard Deviation 0.236
Efavaleukin Alfa Medium DoseSerum Efavaleukin Alfa Concentrations by TimepointDay 1690.140 ng/mLStandard Deviation 0.178
Efavaleukin Alfa Medium DoseSerum Efavaleukin Alfa Concentrations by TimepointDay 1: 48-96 hrs21.8 ng/mLStandard Deviation 30.5
Efavaleukin Alfa Medium DoseSerum Efavaleukin Alfa Concentrations by TimepointDay 3090.308 ng/mLStandard Deviation 0.533
Efavaleukin Alfa Medium DoseSerum Efavaleukin Alfa Concentrations by TimepointDay 2530.458 ng/mLStandard Deviation 0.71
Efavaleukin Alfa Medium DoseSerum Efavaleukin Alfa Concentrations by TimepointDay 1: 6-24 hrs27.4 ng/mLStandard Deviation 25.7
Efavaleukin Alfa Medium DoseSerum Efavaleukin Alfa Concentrations by TimepointDay 43: 48-96 hrs18.1 ng/mLStandard Deviation 19
Efavaleukin Alfa Medium DoseSerum Efavaleukin Alfa Concentrations by TimepointDay 43: 6-24 hrs25.0 ng/mLStandard Deviation 22.6
Efavaleukin Alfa Medium DoseSerum Efavaleukin Alfa Concentrations by TimepointDay 850.191 ng/mLStandard Deviation 0.316
Efavaleukin Alfa Medium DoseSerum Efavaleukin Alfa Concentrations by TimepointDay 290.0699 ng/mLStandard Deviation 0.173

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026