Efficacy and Safety Study of Sirukumab in Patients with Giant Cell Arteritis
Trial overview
Proportion of subjects in sustained remission at Week 52 for sirukumab (100 mg every 2 weeks [q2w] for 12 months) as compared to placebo, each administered in addition to a 6-month prednisone treatment regimen
Timeframe: Week 52
Part A & B: Cumulative prednisone doses in subjects treated with sirukumab plus prednisone
Timeframe: 52 Weeks (Part A) and 104 Weeks (Part B)
Part A & B: Proportion of subjects in sustained remission
Timeframe: At Week 52 (Part A) and from Week 52 to Week 78 (Part B)
Part A & B: Measure of remission rates over time
Timeframe: 52 Weeks (Part A) and 104 Weeks (Part B)
Part A & B: Time to first GCA flare
Timeframe: 52 Weeks (Part A) and 104 Weeks (Part B)
Part A & B: Number of disease flares per subject over time
Timeframe: 52 Weeks (Part A) and 104 Weeks (Part B)
Part A & B: Safety: Incidence of adverse events
Timeframe: 52 Weeks (Part A) and 120 Weeks (Part B)
Part A & B: Safety: Incidence of corticosteroid-related adverse events
Timeframe: 52 Weeks (Part A) and 120 Weeks (Part B)
Part A & B: Composite of vital signs assessment as a measure of safety: blood pressure, pulse rate and temperature
Timeframe: 52 Weeks (Part A) and 120 Weeks (Part B)
Part A & B: Composite of clinical laboratory tests assessment as a measure of safety: clinical chemistry and hematology
Timeframe: 52 Weeks (Part A) and 104 Weeks (Part B)
Part A: Assessment of Patient Global Impression of Change (PGIC)
Timeframe: Up to Week 52
Part A & B: Pain assessment
Timeframe: 52 Weeks (Part A) and 104 Weeks (Part B)
Part A & B: Health Assessment Questionnaire-Disability Index (HAQ-DI)
Timeframe: 52 Weeks (Part A) and 104 Weeks (Part B)
Part A & B: Functional Assessment of Chronic Illness Therapy-Fatigue (FACIT-Fatigue)
Timeframe: 52 Weeks (Part A) and 104 Weeks (Part B)
Part A & B: Assessment of steroid impact
Timeframe: 52 Weeks (Part A) and 104 Weeks (Part B)
Part A & B: Assessment of quality of life using the 36-item Short Form Version 2 Acute (SF-36v2 Acute)
Timeframe: 52 Weeks (Part A) and 104 Weeks (Part B)
Part A & B: Assessment of health status using the EuroQoL-5D (EQ-5D)
Timeframe: 52 Weeks (Part A) and 104 Weeks (Part B)
Part A: Pharmacodynamics: Change from baseline in erythrocyte sedimentation rate (ESR) over time
Timeframe: Up to Week 52
Part A: Pharmacodynamics: Change from baseline in serum C-reactive protein (CRP) over time
Timeframe: Up to Week 52
Part A: Pharmacokinetics: Serum concentrations of sirukumab
Timeframe: Up to Week 44
Part A & B: Immunogenicity: Serum anti-sirukumab antibodies
Timeframe: 52 Weeks (Part A) and 120 Weeks (Part B)
- Diagnosis of GCA defined by the following Revised GCA Diagnosis Criteria:
 - Age >=50 years.
 
- Are pregnant or breastfeeding.
 - Recent (within the past 12 weeks) or planned major surgery that would impact on study procedures or assessments.
 
- Diagnosis of GCA defined by the following Revised GCA Diagnosis Criteria: Age >=50 years. History of ESR >=50 millimeter/hour (mm/hour) or CRP >=2.45 milligram/deciliter(mg/dL). Presence of at least one of the following: Unequivocal cranial symptoms of GCA; Unequivocal symptoms of polymyalgia rheumatic (PMR). Presence of at least one of the following: Temporal artery biopsy revealing features of GCA; Evidence of large-vessel vasculitis by angiography or cross-sectional imaging.
 - Active GCA within 6 weeks of Randomization (Baseline) where active disease is defined by an ESR >=30 mm/hr or CRP >=1 mg/dL AND the presence of at least one of the following: Unequivocal cranial symptoms of GCA; Unequivocal symptoms of PMR; Other features judged by the clinician investigator to be consistent with GCA or PMR flares.
 - At screening, receiving or able to receive prednisone 20-60 mg/day for the treatment of active GCA.
 - Clinically stable GCA disease at baseline such that the subject is able to safely participate in the blinded prednisone taper regimen in the opinion of the investigator.
 - Practicing acceptable methods of birth control if a female of child-bearing potential.
 - No evidence of active or latent infection with Mycobacterium tuberculosis (TB).
 
- Are pregnant or breastfeeding.
 - Recent (within the past 12 weeks) or planned major surgery that would impact on study procedures or assessments.
 - Organ transplantation recipients (except corneas within 3 months prior to baseline visit).
 - Had prior treatment with any of the following: Systemic immunosuppressives) within 4 weeks of baseline; Biologic agents targeted at reducing tumor necrosis factor-alpha (TNF-alpha) within 2-8 weeks of baseline, depending on the agent; Any prior use of tocilizumab or other anti-IL-6 agents; B-cell depleting agents (eg, rituximab) within 12 months prior to baseline or longer if B cell counts have not returned to normal range or baseline levels; Cytotoxic drugs such as cyclophosphamide, chlorambucil, nitrogen mustard, or other alkylating agents within 4 weeks of baseline; Abatacept within 8 weeks of baseline; Tofacitinib within 4 weeks of baseline; Methotrexate use within 2 weeks of baseline. Methylprednisolone > 100 mg/day intravenous (IV) (or equivalent) within 8 weeks of baseline.
 - History of severe allergic reactions to monoclonal antibodies, human proteins, or excipients.
 - Evidence of serious concomitant disease, which in the opinion of the investigator makes them unsuitable for participation in the study.
 - Major ischemic event, unrelated to GCA, within 12 weeks of screening.
 - Marked baseline prolongation of corrected QT (QTc) interval >= 450 milliseconds (msec) (QTc by Bazett's formula [QTcB ]or QTc by Fridericia's formula [QTcF] ), history of Torsade de Pointes, family history of long QT syndrome, history of second or third degree heart block.
 - Current liver disease that could interfere with the trial
 - History of or current active diverticulitis, inflammatory bowel disease, or other symptomatic gastrointestinal tract condition that might predispose to bowel perforation.
 - History of known demyelinating diseases such as multiple sclerosis or optic neuritis.
 - Active infections, or history of recurrent infections or have required management of acute or chronic infections, as follows: Currently on any suppressive therapy for a chronic infection, history or suspicion of chronic infection, hospitalization for treatment of infection within 60 days of the baseline visit, or use of parenteral (IV) or intra-muscular [IM]) antimicrobials within 60 days of baseline or oral antimicrobials within 30 days of baseline
 - Primary or secondary immunodeficiency or any other autoimmune disease.
 - Human immunodeficiency virus (HIV) infection, hepatitis C or hepatitis B infection
 - Live virus or bacterial vaccination within 3 months before the first administration of study drug
 
Trial location(s)
Study documents
If you wish to request for full study report, please contact - [email protected]
Results overview
Results posted on ClinicalTrials.gov
Plain language summaries
Plain language summaries of clinical trial results for Phase 2-4 clinical trials that were initiated on or after January 2022 will be posted by GSK within one year following study completion.