A Study to Evaluate the Efficacy and Safety of CEP-33457 in Participants With Systemic Lupus Erythematosus (SLE)

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.

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.

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.

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.

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).

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).

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.

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.

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.

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.