The primary objective of this study is to evaluate the efficacy of a 200 micrograms (mcg) dose of CEP-33457 compared with placebo in participants with active systemic lupus erythematosus (SLE) as assessed by the proportion of participants achieving a combined clinical response using the SLE responder index (SRI) at Week 24.
The study consisted of a 2-week screening period (visit 1), a 20-week treatment period beginning with a baseline visit in which randomization was completed and study drug treatment began (visits 2 through 7), and a final assessment was performed 4 weeks after the last dose of study drug (visit 8 \[week 24 or early termination\]). Participants were randomized to receive either CEP-33457 or placebo subcutaneously (SC) every 4 weeks. Plasma samples for measurement of study drug concentration were collected in a subset of participants and study drug was administered at each study visit until the final visit. The dose of background steroid medication may have been increased, if needed, to treat the participant for minor fluctuations in lupus disease activity. One interim analysis was conducted when at least 80 participants completed Week 12 or had been withdrawn from the study. Participants who completed the treatment period returned to the study center 4 weeks after the last dose had been administered for final procedures and assessments. Final procedures and assessments for participants who withdrew from the study before 20 weeks of treatment were performed at the last visit. Final procedures and assessments for participants who participated in the study beyond week 24 were to be performed at the next regularly scheduled visit. Participants who complete the study will be eligible for participation in the 12-month open-label study (study C33457/3075; herein referred to as study 3075) to assess continued effectiveness and safety of the CEP-33457 treatment.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
183
Number of Participants Achieving a Combined Clinical Response Using the Systemic Lupus Erythematosus (SLE) Responder Index (SRI) at Week 24
An SRI response was defined as a reduction from baseline in SLE Disease Activity Index 2000 (SLEDAI-2K) score of ≥4 points, no worsening in Physician Global Assessment (PhGA), no new British Isles Lupus Assessment Group (BILAG) A body system score, and ≤1 new BILAG B body system score from baseline. SLEDAI-2K includes 24 weighted clinical and laboratory variables. Total score = 0 to 105. A score of 6 to 10 = moderate disease activity, and a reduction of \>3 points = improvement. PhGA was completed by physician using a visual analog scale (VAS) from 0=none to 3=severe. A change of \>0.3 points = worsening. BILAG includes 97 clinical and laboratory items. Each organ system is assigned a score displayed as a grade from A to E: A=very active disease; B=patient needs increase in treatment for moderately active disease; C=stable or mild disease; D=previous organ involvement but no current disease activity; and E=no current disease activity and organ system has never been involved.
Time frame: Week 24
Number of Participants Achieving an SRI Response at Each Visit During the Treatment Period
An SRI response was defined as a reduction from baseline in SLEDAI-2K score of ≥4 points, no worsening in PhGA, no new BILAG A body system score, and ≤1 new BILAG B body system score from baseline. SLEDAI-2K includes 24 weighted clinical and laboratory variables. Total score = 0 to 105. A score of 6 to 10 = moderate disease activity, and a reduction of \>3 points = improvement. PhGA was completed by physician using a VAS from 0=none to 3=severe. A change of \>0.3 points = worsening. BILAG includes 97 clinical and laboratory items. Each organ system is assigned a score displayed as a grade from A to E: A=very active disease; B=participant needs increase in treatment for moderately active disease; C=stable or mild disease; D=previous organ involvement but no current disease activity; and E=no current disease activity and organ system has never been involved.
Time frame: Weeks 4, 8, 12, 16, and 20
Number of Participants Achieving a Reduction of at Least 4 Points in the SLEDAI-2K Total Score
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Teva Investigational Site 27
Birmingham, Alabama, United States
Teva Investigational Site 20
Tucson, Arizona, United States
Teva Investigational Site 16
Los Angeles, California, United States
Teva Investigational Site 5
Los Angeles, California, United States
Teva Investigational Site 7
San Diego, California, United States
Teva Investigational Site 14
San Leandro, California, United States
Teva Investigational Site 17
Stanford, California, United States
Teva Investigational Site 30
Aurora, Colorado, United States
Teva Investigational Site 4
Aventura, Florida, United States
Teva Investigational Site 32
Clearwater, Florida, United States
...and 76 more locations
The SLEDAI-2K is a global index and includes 24 weighted clinical and laboratory variables. The total score (sum of all 24 scores) ranges from 0 to 105. A SLEDAI-2K score of 6 to 10 is indicative of moderate disease activity, and improvement is defined as a reduction of more than 3 points.
Time frame: Week 24
Number of Participants Achieving a British Isles Lupus Assessment Group (BILAG) 2004 Response
The BILAG 2004 is a validated objective and subjective global measure of the disease activity of SLE based on the physician intention to treat. It includes 97 clinical and laboratory items to evaluate SLE disease activity in 9 organ systems; each organ system is assigned a score displayed as a grade from A to E, as follows: A=very active disease; B=participant needs increase in treatment for moderately active disease; C=stable or mild disease; D=previous organ involvement but no current disease activity; and E=no current disease activity and the organ system has never been involved. BILAG 2004 response was defined as no new A body system score and no more than 1 new BILAG B body system score from baseline.
Time frame: Weeks 4, 8, 12, 16, 20, and 24
Number of Participants Achieving a BILAG 2004 Clinical Response
The BILAG 2004 is a validated objective and subjective global measure of the disease activity of SLE based on the physician intention to treat. It includes 97 clinical and laboratory items to evaluate SLE disease activity in 9 organ systems; each organ system is assigned a score displayed as a grade from A to E, as follows: A=very active disease; B=participant needs increase in treatment for moderately active disease; C=stable or mild disease; D=previous organ involvement but no current disease activity; and E=no current disease activity and the organ system has never been involved. BILAG 2004 clinical response was defined as having an improvement in at least 1 category from a B score at baseline to a C or D score with no worsening in any other category from baseline.
Time frame: Weeks 4, 8, 12, 16, 20, and 24
Number of Participants Achieving a Physician Global Assessment (PhGA) Response
The PhGA was completed by the physician using a 3 inch VAS labeled from 0=none to 3=severe. The PhGA response was defined as having no worsening in PhGA (with worsening defined as an increase in PhGA of more than 0.30 inch from baseline).
Time frame: Weeks 4, 8, 12, 16, 20, and 24
Number of Participants Achieving a Patient's Global Assessment (PtGA) Response
The PhGA was completed by the participant using a 3 inch VAS labeled from 0=none to 3=severe. The PtGA response was defined as having no worsening in PtGA (with worsening defined as an increase in PtGA of more than 0.30 inch from baseline).
Time frame: Weeks 4, 8, 12, 16, 20, and 24
Change From Baseline in the Medical Outcome Survey Short-Form 36 (SF-36) Patient-Reported Questionnaire For Physical Component Summary (PCS) Score at Weeks 12 and 24
The SF-36 questionnaire has 36 questions composing the scale that represent 8 domains: 1) physical functioning, role physical, 2) bodily pain, 3) general health, 4) vitality, 5) social functioning, 6) role, 7) emotional, and 8) mental health. The scores for the 8 domains were combined into two summary scores: the physical component summary (PCS) score and the mental component summary (MCS) score. Items 1 to 4 primarily contribute to the PCS score of the SF-36. Items 5-8 primarily contribute to the MCS score of the SF-36. Scores on each item were summed and averaged (range: 0=worst to 100=best). Higher scores represent better health status and functional ability.
Time frame: Baseline, Week 12, Week 24
Change From Baseline in the Medical Outcome Survey SF-36 Patient-Reported Questionnaire For Mental Component Summary (MCS) Score at Weeks 12 and 24
The SF-36 questionnaire has 36 questions composing the scale that represent 8 domains: 1) physical functioning, role physical, 2) bodily pain, 3) general health, 4) vitality, 5) social functioning, 6) role, 7) emotional, and 8) mental health. The scores for the 8 domains were combined into two summary scores: the physical component summary (PCS) score and the mental component summary (MCS) score. Items 1 to 4 primarily contribute to the PCS score of the SF-36. Items 5-8 primarily contribute to the MCS score of the SF-36. Scores on each item were summed and averaged (range: 0=worst to 100=best). Higher scores represent better health status and functional ability.
Time frame: Baseline, Week 12, Week 24
Systemic Lupus International Collaborative Clinics/American College of Rheumatology (SLICC/ACR) Damage Index
SLICC/ACR score or damage index is a measure of cumulative damage due to SLE. Damage is defined as nonreversible change (not related to active inflammation) occurring since onset of lupus, ascertained by clinical assessment and present for at least 6 months. Damage is defined for 12 separate organ systems: ocular (range 0-2), neuropsychiatric (0-6), renal (0-3), pulmonary (0-5), cardiovascular (0-6), peripheral vascular (0-5), gastrointestinal (0-6), musculoskeletal (0-7), skin (0-3), endocrine (diabetes) (0-1), gonadal (0-1) and malignancies (0-2). A score of 0=no damage, early damage is defined as ≥1. The total maximum score is 47, and increasing score indicates increasing disease damage severity.
Time frame: Baseline, Week 24
Number of Participants With Adverse Events (AEs)
An AE was defined as any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. SAEs were defined as death, a life-threatening AE, inpatient hospitalization or prolongation of existing hospitalization, persistent or significant disability or incapacity, a congenital anomaly or birth defect, or an important medical event that jeopardized participant and required medical intervention to prevent 1 of the outcomes listed in this definition. A summary of other non-serious AEs and all serious AEs, regardless of causality is located in Reported AE section.
Time frame: Baseline up to Week 24