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A Study to Evaluate the Efficacy and Safety of CC-220 in Subjects With Active Systemic Lupus Erythematosus

A PHASE 2, MULTICENTER, RANDOMIZED, DOUBLE-BLIND, PLACEBO-CONTROLLED STUDY TO EVALUATE THE EFFICACY AND SAFETY OF CC-220 IN SUBJECTS WITH ACTIVE SYSTEMIC LUPUS ERYTHEMATOSUS

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03161483
Enrollment
289
Registered
2017-05-19
Start date
2017-08-31
Completion date
2021-08-03
Last updated
2023-06-15

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

Conditions

Lupus Erythematosus, Systemic

Keywords

CC-220, Safety, Efficacy, Active Systemic Lupus Erythematosus

Brief summary

The purpose of this Phase 2, multicenter, randomized, placebo-controlled, double-blind study to evaluate the efficacy and safety of an oral treatment regimen of CC-220 versus placebo in adult subjects with active systemic lupus erythematosus. Approximately 280 subjects with a documented diagnosis of SLE will be randomized 2:2:1:2 to receive CC-220 (0.45 mg QD, 0.3 mg QD or 0.15 mg QD) or identically appearing placebo.

Detailed description

The study consists of four phases: * 4-week Screening Phase * 24-week placebo-controlled phase Subjects will receive either 0.45 mg QD, 0.3 mg QD, 0.15 mg QD or placebo for the first 24 weeks of treatment. * 28-week active treatment phase At Week 24, all subjects on placebo will be re-randomized to active treatment. * 52-week long-term extension phase Subjects who complete the treatment phase may be eligible to roll over into a Long-term Extension of up to 52 weeks of treatment. * 4 - 12-week observational follow-up All subjects who complete 52 weeks of treatment or discontinue the study early will enter a post-treatment observation follow-up phase. The Observational Follow-up Phase will consist of one visit 4 weeks following cessation of study drug for all subjects with an additional 12-week Observational Follow-up visit for males only.

Interventions

DRUGCC-220

CC-220

OTHERPlacebo

Placebo QD PO

Sponsors

Celgene
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 No maximum
Healthy volunteers
No

Inclusion criteria

* Male or female 18 years of age or older at the time of signing the informed consent. * Have a diagnosis of SLE for at least 6 months prior to the Screening Visit and fulfill the 1997 update of the 1982 American College of Rheumatology (ACR) Classification Criteria for SLE at the Screening Visit. * A SLEDAI 2K score of ≥ 6 points, WITH at least 4 points being a clinical SLEDAI 2K score. The clinical score excludes points attributable to any urine or blood laboratory results including immunologic measures. * At the Baseline Visit, a clinical SLEDAI 2K score of ≥ 4 points. * Have at least one of the following positive antibodies associated with SLE per the central laboratory within the Screening Phase: * Positive antinuclear antibody (ANA) test at the central laboratory with a titer of 1:40 or greater, associated with a diagnosis of SLE, * Anti-dsDNA antibodies elevated to above normal * Anti-Smith (anti-Sm) antibody elevated to above normal * Females of childbearing potential must: Have two negative pregnancy tests as verified by the Investigator prior to starting study therapy. She must agree to ongoing pregnancy testing during the course of the study, and after end of study treatment. o Either commit to true abstinence from heterosexual contact or agree to use two forms of reliable contraception simultaneously. * Male subjects must: Practice true abstinence or agree to use a barrier contraception during sexual contact. All subjects must: * Understand that the IP could have potential teratogenic risk. * Agree to abstain from donating blood while taking IP and for 28 days following discontinuation of the IP. * Have been treated with at least one of the following SLE medications prior to the Screening Visit: antimalarials, immunosuppressants, and/or corticosteroids. * Currently receiving stable doses of at least one of the following medications: systemic corticosteroids, antimalarials, and/or immunosuppressants.

Exclusion criteria

* Received intra-articular, intralesional, subcutaneous, intradermal, intramuscular or IV pulse corticosteroids 6 weeks prior to the Baseline Visit. * Received any other biologic or non-biologic immunosuppressive agent within 2 months of 5 pharmacokinetic half-lives (whichever is longer) prior to the Baseline Visit. * Have severe lupus nephritis defined as: estimated glomerular filtration rate of \< 45 mL/1.73 m2 or proteinuria \> 2000 mg/day based on protein to creatinine ratio, or active lupus nephritis that may require 'induction' therapy * Have active, severe or unstable neuropsychiatric lupus disease within 6 months of the Screening Visit. * Have serologic tests consistent with infection with either hepatitis B or hepatitis C, and/or confirmed history of hepatitis B or hepatitis C infection. * Have history of congenital and/or acquired immunodeficiencies (eg, common variable immunodeficiency, human immunodeficiency virus, etc). * Have active or history of recurrent bacterial, viral, fungal, mycobacterial or other infections, or any major episode of infection requiring hospitalization or treatment with intravenous or oral antibiotics within 4 weeks of the Screening Visit and at any time during the Screening Phase, up through the first dose of IP. * Have active tuberculosis or a history of latent or active tuberculosis * Have malignancy or history of malignancy, except for: * treated (eg, cured) basal cell or squamous cell in situ skin carcinomas * treated (eg, cured) cervical intraepithelial neoplasia Grade 1 and Grade 2 * treated (eg, cured) carcinoma in situ of the cervix with no evidence of recurrence within 5 years of the Screening Visit. * Have a diagnosis or history consistent with Antiphospholipid Syndrome or triple antiphospholipid positivity (ie, positive lupus anticoagulant, anticardiolipin, and anti-B2 glycoprotein). * Have history of arterial or venous thrombosis * Have history or current diagnosis of peripheral neuropathy (sensory or motor) ≥ Grade 2. * Have presence of active uveitis or any other ophthalmological finding that in the opinion of the Investigator is clinically significant. * Have other non-SLE driven inflammatory joint or skin disease or overlap syndromes as the primary disease. * Have clinically significant or unstable or uncontrolled acute or chronic disease not due to SLE * Does not meet required laboratory criteria. * Does not meet pre-specified periods for prohibited medications. * Pregnant or a breast-feeding female. NOTE: Other protocol defined Inclusion/

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants Who Achieve SLE Responder Index (SRI) (4) ResponseWeek 24The primary objective is to evaluate the clinical efficacy of three doses of CC-220 (0.45 mg once per day \[QD\], 0.3 mg QD or 0.15 mg QD) compared to placebo, for the treatment of active systemic lupus erythematosus (SLE) using the SLE Responder Index at Week 24 Composite endpoint SRI(4), defined by the following criteria: - Reduction from Baseline of ≥ 4 points in the Systemic Lupus Erythematosus Disease Activity Index (SLEDAI) 2K score and - No new one or more British Isles Lupus Assessment Group (BILAG) A or new (excludes A to B) 2 or more BILAG B items compared to Baseline using BILAG 2004 Index and - No worsening from Baseline defined by an increase of \< 0.30 points from Baseline on a Physician's Global Assessment (PGA) visual analog scale (VAS) from 0-3

Secondary

MeasureTime frameDescription
Number of Participants With a ≥ 50% Reduction in Cutaneous Lupus Area and Severity Index (CLASI) Activity Score From Baseline, in Participants With Baseline CLASI Activity Score ≥ 10Week 24The CLASI Activity Score ranges from 0 to 70. To generate the activity score erythema is scored on a scale of 0 (absent) to 3 (dark red; purple/violaceous/crusted/hemorrhagic) and scale/hypertrophy are scored on a scale of 0 (absent) to 2 (verrucous/hypertrophic). Both the erythema and scale/hypertrophy scores are assessed in 13 different anatomical locations. In addition, the presence of mucous membrane lesions is scored on a scale of 0 (absent) to 1 (lesion or ulceration), the occurrence of recent hair loss is captured (1=yes; 0=no) and non-scarring alopecia is scored on a scale of 0 (absent) to 3 (focal or patchy in more than one quadrant). To calculate the activity score, all scores for erythema, scale/hypertrophy, mucous membrane lesions and alopecia are added together.
Number of Participants With no New Organ System Affected as Defined by 1 or More BILAG A or New (Excludes A to B) 2 or More BILAG B Items Compared to Baseline Using BILAG 2004 IndexWeek 24The BILAG 2004 is a composite index that is based on the Classic BILAG index. It is a clinical measure of lupus disease activity. This tool assesses the changing severity of clinical manifestations of SLE using an ordinal scale scoring system that contain 9 systems (constitutional, mucocutaneous, neuropsychiatric, musculoskeletal, cardiorespiratory, gastrointestinal, ophthalmic, renal and hematological). Activity in each organ system is scored as: A=most active disease; B=intermediate activity; C=mild, stable disease; D=previous involvement, currently inactive; E=no previous activity.
Percentage of Participants With no Worsening (Increase of < 0.30 Points From Baseline) in PGA Compared to BaselineWeek 24The PGA uses a visual analog scale with scores between 0 and 3 to indicate worsening of disease. The scoring is as follows: 0 = none, 1 = mild disease, 2 = moderate disease, and 3 = severe disease.
Mean Change From Baseline in Swollen Joint Count in Participants With ≥ 2 Swollen Joints at BaselineWeek 24Joint tenderness and swelling will be noted as present or absent, with no quantitation of severity using a 28- joint count. Note: Data presented is Adjusted mean data.
Mean Change From Baseline in Tender Joint Count in Participants With ≥ 2 Tender Joints at BaselineWeek 24Joint tenderness and swelling will be noted as present or absent, with no quantitation of severity using a 28- joint count. Note: Data presented is Adjusted mean data.
Number of Participants With SLEDAI 2K Score Improvement of ≥ 4 Points From BaselineWeek 24The SLEDAI 2K score measures disease activity through assessment of 24 lupus manifestations using a weighted score of 1 to 8 points. A manifestation is recorded if it is present over the previous 30 days regardless of severity or whether it has improved or worsened. A SLEDAI 2K score of 3 to 4 points is representative of active disease and a decrease of 1 to 2 points is considered clinically meaningful.
Change From Baseline in Functional Assessment of Chronic Illness Therapy (FACIT) Fatigue ScoreWeek 24The FACIT-Fatigue scale is a 13-item self-administered questionnaire that assesses both the physical and functional consequences of fatigue. Each question is answered on a 5-point scale, where 0 means not at all, and 4 means very much. The total FACIT-Fatigue score ranges from 0 to 52. Note: Data presented is Adjusted mean data.
Percentage of Participants With Corticosteroid ReductionWeek 24\- The percentage of participants with a prednisone or equivalent dose of ≥ 10 mg/day at Baseline whose prednisone or equivalent dose has been reduced to ≤ 7.5 mg/day by Week 16 and maintained through Week 24 with no flares between Week 16 and Week 24 - The percentage of participants with a prednisone or equivalent dose of ≥ 10 mg/day at Baseline whose prednisone or equivalent dose has been reduced to \< 10 mg/day by Week 16 and maintained through Week 24 with no flares between Week 16 and Week 24
Percent Change From Baseline in Corticosteroid ReductionWeek 24Percent change from Baseline in oral corticosteroid (OCS) dose in subjects with prednisone or equivalent ≥ 10 mg/day at Baseline Note: Data presented is Adjusted mean data.
The Total Corticosteroid Dose From Baseline Through Week 24Through Week 24Standardized total oral corticosteroid (OCS) dose.
Number of Participants With Treatment-Emergent Adverse Events (TEAEs)from first dose to 28 days post-last dose through Week 24 (placebo-controlled phase), approximately 28 weeks totalNumber of participants who experienced a TEAE during the course of the study
Mean Change From Baseline in PGA ScoreWeek 24The PGA uses a visual analog scale with scores between 0 and 3 to indicate worsening of disease. The scoring is as follows: 0 = none, 1 = mild disease, 2 = moderate disease, and 3 = severe disease.

Countries

Argentina, Belgium, Brazil, Canada, Colombia, France, Germany, Hungary, Italy, Mexico, Poland, Russia, Serbia, Spain, United States

Participant flow

Participants by arm

ArmCount
PBO QD
Placebo-matching treatment once a day.
83
0.15 mg QD
Participants dosed with CC-220 at 0.15 mg once a day
42
0.30 mg QD
Participants dosed with CC-220 at 0.30 mg once a day
82
0.45 mg QD
Participants dosed with CC-220 at 0.45 mg once a day
82
Total289

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003
Placebo Controlled PhaseParticipant Withdrew Consent0100
Treatment PeriodAdverse Event52111
Treatment PeriodDeath1000
Treatment PeriodLack of Efficacy0001
Treatment PeriodLost to Follow-up0001
Treatment PeriodOther reasons1100
Treatment PeriodPregnancy1000
Treatment PeriodProtocol Violation0001
Treatment PeriodWithdrawal by Subject2526

Baseline characteristics

Characteristic0.30 mg QD0.45 mg QDTotalPBO QD0.15 mg QD
Age, Customized
>= 40 to <= 50
21 Participants28 Participants90 Participants26 Participants15 Participants
Age, Customized
< 40 years old
31 Participants25 Participants104 Participants33 Participants15 Participants
Age, Customized
> 50 to < 65
24 Participants24 Participants77 Participants19 Participants10 Participants
Age, Customized
>= 65
6 Participants5 Participants18 Participants5 Participants2 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
46 Participants33 Participants141 Participants41 Participants21 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
36 Participants49 Participants148 Participants42 Participants21 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants
Race/Ethnicity, Customized
American Indian or Alaska Native
1 Participants5 Participants13 Participants2 Participants5 Participants
Race/Ethnicity, Customized
Asian
1 Participants0 Participants1 Participants0 Participants0 Participants
Race/Ethnicity, Customized
Black or African American
6 Participants5 Participants21 Participants7 Participants3 Participants
Race/Ethnicity, Customized
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants
Race/Ethnicity, Customized
Not collected or reported
0 Participants0 Participants0 Participants0 Participants0 Participants
Race/Ethnicity, Customized
Other
15 Participants11 Participants45 Participants14 Participants5 Participants
Race/Ethnicity, Customized
White
59 Participants61 Participants209 Participants60 Participants29 Participants
Sex: Female, Male
Female
77 Participants80 Participants279 Participants81 Participants41 Participants
Sex: Female, Male
Male
5 Participants2 Participants10 Participants2 Participants1 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
deaths
Total, all-cause mortality
1 / 420 / 820 / 811 / 831 / 360 / 36
other
Total, other adverse events
32 / 4263 / 8262 / 8134 / 8316 / 3626 / 36
serious
Total, serious adverse events
6 / 4210 / 8214 / 817 / 832 / 363 / 36

Outcome results

Primary

Number of Participants Who Achieve SLE Responder Index (SRI) (4) Response

The primary objective is to evaluate the clinical efficacy of three doses of CC-220 (0.45 mg once per day \[QD\], 0.3 mg QD or 0.15 mg QD) compared to placebo, for the treatment of active systemic lupus erythematosus (SLE) using the SLE Responder Index at Week 24 Composite endpoint SRI(4), defined by the following criteria: - Reduction from Baseline of ≥ 4 points in the Systemic Lupus Erythematosus Disease Activity Index (SLEDAI) 2K score and - No new one or more British Isles Lupus Assessment Group (BILAG) A or new (excludes A to B) 2 or more BILAG B items compared to Baseline using BILAG 2004 Index and - No worsening from Baseline defined by an increase of \< 0.30 points from Baseline on a Physician's Global Assessment (PGA) visual analog scale (VAS) from 0-3

Time frame: Week 24

Population: Primary analysis based on Intent-to-treat (ITT) Population (all randomized participants who received at least one dose of investigational product) and nonresponder imputation (NRI). Participants with insufficient data for response determination at the given time point are considered nonresponders.

ArmMeasureValue (NUMBER)
PBO QDNumber of Participants Who Achieve SLE Responder Index (SRI) (4) Response29 Number of participants
0.15 mg QDNumber of Participants Who Achieve SLE Responder Index (SRI) (4) Response20 Number of participants
0.30 mg QDNumber of Participants Who Achieve SLE Responder Index (SRI) (4) Response33 Number of participants
0.45 mg QDNumber of Participants Who Achieve SLE Responder Index (SRI) (4) Response44 Number of participants
p-value: 0.21495% CI: [-6.57, 29]Cochran-Mantel-Haenszel
p-value: 0.51295% CI: [-9.77, 19.48]Cochran-Mantel-Haenszel
p-value: 0.01195% CI: [4.12, 33.42]Cochran-Mantel-Haenszel
Secondary

Change From Baseline in Functional Assessment of Chronic Illness Therapy (FACIT) Fatigue Score

The FACIT-Fatigue scale is a 13-item self-administered questionnaire that assesses both the physical and functional consequences of fatigue. Each question is answered on a 5-point scale, where 0 means not at all, and 4 means very much. The total FACIT-Fatigue score ranges from 0 to 52. Note: Data presented is Adjusted mean data.

Time frame: Week 24

Population: ITT population; participants with a baseline value and a value at the time point

ArmMeasureValue (MEAN)
PBO QDChange From Baseline in Functional Assessment of Chronic Illness Therapy (FACIT) Fatigue Score3.8 scores on a scale
0.15 mg QDChange From Baseline in Functional Assessment of Chronic Illness Therapy (FACIT) Fatigue Score2.7 scores on a scale
0.30 mg QDChange From Baseline in Functional Assessment of Chronic Illness Therapy (FACIT) Fatigue Score3.1 scores on a scale
0.45 mg QDChange From Baseline in Functional Assessment of Chronic Illness Therapy (FACIT) Fatigue Score5.2 scores on a scale
p-value: 0.54695% CI: [-4.7, 2.5]longitudinal data analysis model
p-value: 0.68195% CI: [-3.7, 2.4]longitudinal data analysis model
p-value: 0.3595% CI: [-1.6, 4.4]longitudinal data analysis model
Secondary

Mean Change From Baseline in PGA Score

The PGA uses a visual analog scale with scores between 0 and 3 to indicate worsening of disease. The scoring is as follows: 0 = none, 1 = mild disease, 2 = moderate disease, and 3 = severe disease.

Time frame: Week 24

Population: ITT population with a baseline value and a value at the time point.

ArmMeasureValue (MEAN)Dispersion
PBO QDMean Change From Baseline in PGA Score-0.803 scores on a scaleStandard Deviation 0.605
0.15 mg QDMean Change From Baseline in PGA Score-0.805 scores on a scaleStandard Deviation 0.528
0.30 mg QDMean Change From Baseline in PGA Score-0.819 scores on a scaleStandard Deviation 0.629
0.45 mg QDMean Change From Baseline in PGA Score-0.883 scores on a scaleStandard Deviation 0.546
Secondary

Mean Change From Baseline in Swollen Joint Count in Participants With ≥ 2 Swollen Joints at Baseline

Joint tenderness and swelling will be noted as present or absent, with no quantitation of severity using a 28- joint count. Note: Data presented is Adjusted mean data.

Time frame: Week 24

Population: ITT Population; Subjects with \>=2 Swollen Joints, with a baseline value and a value at the time point.

ArmMeasureValue (MEAN)
PBO QDMean Change From Baseline in Swollen Joint Count in Participants With ≥ 2 Swollen Joints at Baseline-6.7 swollen joints
0.15 mg QDMean Change From Baseline in Swollen Joint Count in Participants With ≥ 2 Swollen Joints at Baseline-6.0 swollen joints
0.30 mg QDMean Change From Baseline in Swollen Joint Count in Participants With ≥ 2 Swollen Joints at Baseline-6.0 swollen joints
0.45 mg QDMean Change From Baseline in Swollen Joint Count in Participants With ≥ 2 Swollen Joints at Baseline-6.6 swollen joints
p-value: 0.11695% CI: [-0.2, 1.5]longitudinal data analysis model
p-value: 0.09495% CI: [-0.1, 1.6]longitudinal data analysis model
p-value: 0.88195% CI: [-0.6, 0.8]longitudinal data analysis model
Secondary

Mean Change From Baseline in Tender Joint Count in Participants With ≥ 2 Tender Joints at Baseline

Joint tenderness and swelling will be noted as present or absent, with no quantitation of severity using a 28- joint count. Note: Data presented is Adjusted mean data.

Time frame: Week 24

Population: ITT Population; Participants with \>=2 Tender Joints, with a baseline value and a value at the time point.

ArmMeasureValue (MEAN)
PBO QDMean Change From Baseline in Tender Joint Count in Participants With ≥ 2 Tender Joints at Baseline-7.9 tender joints
0.15 mg QDMean Change From Baseline in Tender Joint Count in Participants With ≥ 2 Tender Joints at Baseline-6.8 tender joints
0.30 mg QDMean Change From Baseline in Tender Joint Count in Participants With ≥ 2 Tender Joints at Baseline-6.7 tender joints
0.45 mg QDMean Change From Baseline in Tender Joint Count in Participants With ≥ 2 Tender Joints at Baseline-7.6 tender joints
p-value: 0.1695% CI: [-0.4, 2.6]longitudinal data analysis model
p-value: 0.05695% CI: [0, 2.6]longitudinal data analysis model
p-value: 0.62195% CI: [-1, 1.6]longitudinal data analysis model
Secondary

Number of Participants With a ≥ 50% Reduction in Cutaneous Lupus Area and Severity Index (CLASI) Activity Score From Baseline, in Participants With Baseline CLASI Activity Score ≥ 10

The CLASI Activity Score ranges from 0 to 70. To generate the activity score erythema is scored on a scale of 0 (absent) to 3 (dark red; purple/violaceous/crusted/hemorrhagic) and scale/hypertrophy are scored on a scale of 0 (absent) to 2 (verrucous/hypertrophic). Both the erythema and scale/hypertrophy scores are assessed in 13 different anatomical locations. In addition, the presence of mucous membrane lesions is scored on a scale of 0 (absent) to 1 (lesion or ulceration), the occurrence of recent hair loss is captured (1=yes; 0=no) and non-scarring alopecia is scored on a scale of 0 (absent) to 3 (focal or patchy in more than one quadrant). To calculate the activity score, all scores for erythema, scale/hypertrophy, mucous membrane lesions and alopecia are added together.

Time frame: Week 24

Population: ITT population with Baseline CLASI activity score ≥ 10

ArmMeasureValue (NUMBER)
PBO QDNumber of Participants With a ≥ 50% Reduction in Cutaneous Lupus Area and Severity Index (CLASI) Activity Score From Baseline, in Participants With Baseline CLASI Activity Score ≥ 108 Number of participants
0.15 mg QDNumber of Participants With a ≥ 50% Reduction in Cutaneous Lupus Area and Severity Index (CLASI) Activity Score From Baseline, in Participants With Baseline CLASI Activity Score ≥ 108 Number of participants
0.30 mg QDNumber of Participants With a ≥ 50% Reduction in Cutaneous Lupus Area and Severity Index (CLASI) Activity Score From Baseline, in Participants With Baseline CLASI Activity Score ≥ 108 Number of participants
0.45 mg QDNumber of Participants With a ≥ 50% Reduction in Cutaneous Lupus Area and Severity Index (CLASI) Activity Score From Baseline, in Participants With Baseline CLASI Activity Score ≥ 1013 Number of participants
p-value: 0.44695% CI: [-12.38, 53.11]Cochran-Mantel-Haenszel
p-value: >0.99995% CI: [-27.64, 39.38]Cochran-Mantel-Haenszel
p-value: 0.48895% CI: [-19.54, 44.48]Cochran-Mantel-Haenszel
Secondary

Number of Participants With no New Organ System Affected as Defined by 1 or More BILAG A or New (Excludes A to B) 2 or More BILAG B Items Compared to Baseline Using BILAG 2004 Index

The BILAG 2004 is a composite index that is based on the Classic BILAG index. It is a clinical measure of lupus disease activity. This tool assesses the changing severity of clinical manifestations of SLE using an ordinal scale scoring system that contain 9 systems (constitutional, mucocutaneous, neuropsychiatric, musculoskeletal, cardiorespiratory, gastrointestinal, ophthalmic, renal and hematological). Activity in each organ system is scored as: A=most active disease; B=intermediate activity; C=mild, stable disease; D=previous involvement, currently inactive; E=no previous activity.

Time frame: Week 24

Population: All treated participants

ArmMeasureValue (NUMBER)
PBO QDNumber of Participants With no New Organ System Affected as Defined by 1 or More BILAG A or New (Excludes A to B) 2 or More BILAG B Items Compared to Baseline Using BILAG 2004 Index65 Number of participants
0.15 mg QDNumber of Participants With no New Organ System Affected as Defined by 1 or More BILAG A or New (Excludes A to B) 2 or More BILAG B Items Compared to Baseline Using BILAG 2004 Index38 Number of participants
0.30 mg QDNumber of Participants With no New Organ System Affected as Defined by 1 or More BILAG A or New (Excludes A to B) 2 or More BILAG B Items Compared to Baseline Using BILAG 2004 Index59 Number of participants
0.45 mg QDNumber of Participants With no New Organ System Affected as Defined by 1 or More BILAG A or New (Excludes A to B) 2 or More BILAG B Items Compared to Baseline Using BILAG 2004 Index70 Number of participants
p-value: 0.09295% CI: [-2.74, 24.07]Cochran-Mantel-Haenszel
p-value: 0.43495% CI: [-18.43, 8.06]Cochran-Mantel-Haenszel
p-value: 0.18295% CI: [-3.88, 19.65]Cochran-Mantel-Haenszel
Secondary

Number of Participants With SLEDAI 2K Score Improvement of ≥ 4 Points From Baseline

The SLEDAI 2K score measures disease activity through assessment of 24 lupus manifestations using a weighted score of 1 to 8 points. A manifestation is recorded if it is present over the previous 30 days regardless of severity or whether it has improved or worsened. A SLEDAI 2K score of 3 to 4 points is representative of active disease and a decrease of 1 to 2 points is considered clinically meaningful.

Time frame: Week 24

Population: ITT population. Participants with insufficient data for response determination at the given time point are considered nonresponders.

ArmMeasureValue (NUMBER)
PBO QDNumber of Participants With SLEDAI 2K Score Improvement of ≥ 4 Points From Baseline30 Number of participants
0.15 mg QDNumber of Participants With SLEDAI 2K Score Improvement of ≥ 4 Points From Baseline20 Number of participants
0.30 mg QDNumber of Participants With SLEDAI 2K Score Improvement of ≥ 4 Points From Baseline35 Number of participants
0.45 mg QDNumber of Participants With SLEDAI 2K Score Improvement of ≥ 4 Points From Baseline45 Number of participants
p-value: 0.26495% CI: [-7.66, 27.97]Cochran-Mantel-Haenszel
p-value: 0.39995% CI: [-8.45, 21]Cochran-Mantel-Haenszel
p-value: 0.01295% CI: [4.01, 33.36]Cochran-Mantel-Haenszel
Secondary

Number of Participants With Treatment-Emergent Adverse Events (TEAEs)

Number of participants who experienced a TEAE during the course of the study

Time frame: from first dose to 28 days post-last dose through Week 24 (placebo-controlled phase), approximately 28 weeks total

Population: All treated participants

ArmMeasureGroupValue (NUMBER)
PBO QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any TEAE54 Number of participants
PBO QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any TEAE Leading to Drug Withdrawal6 Number of participants
PBO QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any TEAE Leading to Drug Interruption15 Number of participants
PBO QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any Drug-related TEAE24 Number of participants
PBO QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any TEAE Leading to Death1 Number of participants
PBO QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any Serious TEAE7 Number of participants
PBO QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any Severe TEAE5 Number of participants
0.15 mg QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any TEAE Leading to Drug Withdrawal2 Number of participants
0.15 mg QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any Severe TEAE3 Number of participants
0.15 mg QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any Serious TEAE3 Number of participants
0.15 mg QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any TEAE Leading to Drug Interruption10 Number of participants
0.15 mg QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any TEAE Leading to Death0 Number of participants
0.15 mg QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any Drug-related TEAE14 Number of participants
0.15 mg QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any TEAE31 Number of participants
0.30 mg QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any Severe TEAE4 Number of participants
0.30 mg QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any TEAE64 Number of participants
0.30 mg QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any Drug-related TEAE36 Number of participants
0.30 mg QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any Serious TEAE4 Number of participants
0.30 mg QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any TEAE Leading to Drug Interruption14 Number of participants
0.30 mg QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any TEAE Leading to Drug Withdrawal11 Number of participants
0.30 mg QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any TEAE Leading to Death0 Number of participants
0.45 mg QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any Serious TEAE6 Number of participants
0.45 mg QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any TEAE Leading to Death0 Number of participants
0.45 mg QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any TEAE Leading to Drug Withdrawal4 Number of participants
0.45 mg QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any Drug-related TEAE32 Number of participants
0.45 mg QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any TEAE63 Number of participants
0.45 mg QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any TEAE Leading to Drug Interruption23 Number of participants
0.45 mg QDNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)Any Severe TEAE1 Number of participants
Secondary

Percentage of Participants With Corticosteroid Reduction

\- The percentage of participants with a prednisone or equivalent dose of ≥ 10 mg/day at Baseline whose prednisone or equivalent dose has been reduced to ≤ 7.5 mg/day by Week 16 and maintained through Week 24 with no flares between Week 16 and Week 24 - The percentage of participants with a prednisone or equivalent dose of ≥ 10 mg/day at Baseline whose prednisone or equivalent dose has been reduced to \< 10 mg/day by Week 16 and maintained through Week 24 with no flares between Week 16 and Week 24

Time frame: Week 24

Population: ITT Population; Participants with Baseline OCS Dose \>= 10 mg/day Participants with insufficient data for response determination at the given time point are considered nonresponders.

ArmMeasureGroupValue (NUMBER)
PBO QDPercentage of Participants With Corticosteroid ReductionWeek 24, <= 7.5 mg/day3.2 Percentage of participants
PBO QDPercentage of Participants With Corticosteroid ReductionWeek 24, < 10 mg/day6.5 Percentage of participants
0.15 mg QDPercentage of Participants With Corticosteroid ReductionWeek 24, < 10 mg/day0.0 Percentage of participants
0.15 mg QDPercentage of Participants With Corticosteroid ReductionWeek 24, <= 7.5 mg/day0.0 Percentage of participants
0.30 mg QDPercentage of Participants With Corticosteroid ReductionWeek 24, <= 7.5 mg/day3.3 Percentage of participants
0.30 mg QDPercentage of Participants With Corticosteroid ReductionWeek 24, < 10 mg/day3.3 Percentage of participants
0.45 mg QDPercentage of Participants With Corticosteroid ReductionWeek 24, <= 7.5 mg/day0.0 Percentage of participants
0.45 mg QDPercentage of Participants With Corticosteroid ReductionWeek 24, < 10 mg/day0.0 Percentage of participants
p-value: >0.99995% CI: [-15.13, 15.91]longitudinal data analysis model
p-value: >0.99995% CI: [-17.74, 13]longitudinal data analysis model
Secondary

Percentage of Participants With no Worsening (Increase of < 0.30 Points From Baseline) in PGA Compared to Baseline

The PGA uses a visual analog scale with scores between 0 and 3 to indicate worsening of disease. The scoring is as follows: 0 = none, 1 = mild disease, 2 = moderate disease, and 3 = severe disease.

Time frame: Week 24

Population: All treated participants

ArmMeasureValue (NUMBER)
PBO QDPercentage of Participants With no Worsening (Increase of < 0.30 Points From Baseline) in PGA Compared to Baseline78.3 Percentage of participants
0.15 mg QDPercentage of Participants With no Worsening (Increase of < 0.30 Points From Baseline) in PGA Compared to Baseline90.5 Percentage of participants
0.30 mg QDPercentage of Participants With no Worsening (Increase of < 0.30 Points From Baseline) in PGA Compared to Baseline73.2 Percentage of participants
0.45 mg QDPercentage of Participants With no Worsening (Increase of < 0.30 Points From Baseline) in PGA Compared to Baseline85.2 Percentage of participants
p-value: 0.09895% CI: [-2.98, 23.78]Cochran-Mantel-Haenszel
p-value: 0.52195% CI: [-17.36, 8.92]Cochran-Mantel-Haenszel
p-value: 0.26795% CI: [-5.24, 18.55]Cochran-Mantel-Haenszel
Secondary

Percent Change From Baseline in Corticosteroid Reduction

Percent change from Baseline in oral corticosteroid (OCS) dose in subjects with prednisone or equivalent ≥ 10 mg/day at Baseline Note: Data presented is Adjusted mean data.

Time frame: Week 24

Population: ITT Population; Participants with the Baseline OCS Dose \>= 10 mg/day, with a baseline value and a value at the time point.

ArmMeasureValue (MEAN)
PBO QDPercent Change From Baseline in Corticosteroid Reduction-7.9 percent change from baseline
0.15 mg QDPercent Change From Baseline in Corticosteroid Reduction-5.1 percent change from baseline
0.30 mg QDPercent Change From Baseline in Corticosteroid Reduction-3.8 percent change from baseline
0.45 mg QDPercent Change From Baseline in Corticosteroid Reduction-1.4 percent change from baseline
p-value: 0.53595% CI: [-6, 11.6]longitudinal data analysis model
p-value: 0.30995% CI: [-3.9, 12.2]longitudinal data analysis model
p-value: 0.09195% CI: [-1, 14.1]longitudinal data analysis model
Secondary

The Total Corticosteroid Dose From Baseline Through Week 24

Standardized total oral corticosteroid (OCS) dose.

Time frame: Through Week 24

Population: ITT population

ArmMeasureValue (MEAN)Dispersion
PBO QDThe Total Corticosteroid Dose From Baseline Through Week 241139.7 mgStandard Deviation 916.9
0.15 mg QDThe Total Corticosteroid Dose From Baseline Through Week 241101.9 mgStandard Deviation 827.1
0.30 mg QDThe Total Corticosteroid Dose From Baseline Through Week 241071.8 mgStandard Deviation 965
0.45 mg QDThe Total Corticosteroid Dose From Baseline Through Week 241105.5 mgStandard Deviation 969.3

Source: ClinicalTrials.gov · Data processed: Feb 12, 2026