The primary purpose of this study is to evaluate the efficacy of guselkumab compared to placebo, in combination with a 26-week glucocorticoid (GC) taper regimen, in adult participants with new-onset or relapsing giant cell arteritis (GCA).
Giant cell arteritis (GCA) is a non-necrotizing granulomatous systemic vasculitis of unknown etiology affecting medium-sized and large arteries usually accompanied or preceded by systemic inflammation. Guselkumab is a monoclonal antibody (mAb) that binds to the p19 sub-unit of human interleukin (IL)-23 with high affinity and blocks binding of extracellular IL-23 to cell surface IL-23 receptor, inhibiting IL 23 specific intracellular signaling and subsequent activation and cytokine production. It is used in treatment of psoriatic arthritis, generalized pustular psoriasis, erythrodermic psoriasis. The study consists of a screening period (less than or equal to \[\<=\] 6 weeks), double-blind treatment period (48 weeks), and safety follow-up period (12 weeks). Participants who complete the Week 52 visit and are assessed to be in glucocorticoid (GC)-free remission, may have the option to participate in the long-term extension (LTE) period of the study for up to 12 months. This study will evaluate the efficacy, safety, Pharmacokinetics (PK), and immunogenicity of guselkumab in combination with a 26-week GC taper regimen for the treatment of active new-onset or relapsing GCA in adult participants. The total duration of the study is up to 66 weeks for the main study and for participants that continue in the LTE period, the total study duration will be up to 112 weeks.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
53
Guselkumab will be administered subcutaneously.
Matching placebo will be administered subcutaneously.
Main Study: Percentage of Participants Achieving Glucocorticoid (GC)-Free Remission at Week 28
GC free remission at Week 28 was defined as (1) no signs or symptoms of active Giant cell arteritis (GCA) at Week 28; (2) absence of GCA flare from first dose of the study drug through Week 28; and (3) adherence to the protocol specified 26-week GC taper regimen. GCA flare was defined as the recurrence of signs and symptoms of active GCA, with or without elevation of inflammatory markers, and with the necessity for an increase in GC dose for GCA.
Time frame: Week 28
Main Study: Percentage of Participants Achieving GC-Free Remission at Weeks 28, 32, 36, 40, 44, 48 and 52
GC free remission was defined as (1) no signs or symptoms of active GCA at Weeks 28, 32, 36, 40, 44, 48 and 52 respectively; (2) absence of GCA flare from first dose of the study drug through Weeks 28, 32, 36, 40, 44, 48 and 52; (3) adherence to the protocol specified 26-week GC taper regimen. GCA flare was defined as the recurrence of signs and symptoms of active GCA, with or without elevation of inflammatory markers, and with the necessity for an increase in GC dose for GCA.
Time frame: Weeks 28, 32, 36, 40, 44, 48 and 52
Main Study: Percentage of Participants Achieving Both GC-Free Remission and Normalization of Erythrocyte Sedimentation Rate (ESR) at Weeks 28, 32, 36, 40, 44, 48 and 52
GC-free remission at Weeks 28, 32, 36, 40, 44, 48 and 52 was defined as (1) no signs or symptoms of active GCA at Weeks 28, 32, 36, 40, 44, 48 and 52 respectively (2) absence of GCA flare from first dose of the study drug through Weeks 28, 32, 36, 40, 44, 48 and 52 (3) adherence to the protocol specified 26-week GC taper regimen. Normalization of ESR was defined as ESR less than (\<) 30 millimeter per hour (mm/hr) at Weeks 28, 32, 36, 40, 44, 48 and 52. GCA flare was defined as the recurrence of signs and symptoms of active GCA, with or without elevation of inflammatory markers, and with the necessity for an increase in GC dose for GCA.
Time frame: Weeks 28, 32, 36, 40, 44, 48 and 52
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
University of Kansas Medical Center
Kansas City, Kansas, United States
Massachusetts General Hospital
Boston, Massachusetts, United States
Cliniques Universitaires St-Luc
Brussels, Belgium
UZ Leuven Gasthuisberg
Leuven, Belgium
Mount Sinai Hospital
Toronto, Ontario, Canada
Hopital du Sacre-Coeur de Montreal
Montreal, Quebec, Canada
CHU Dijon
Dijon, France
Hopital Cochin
Paris, France
Universitatsklinikum Erlangen
Erlangen, Germany
medius KLINIK KIRCHHEIM
Kirchheim unter Teck, Germany
...and 20 more locations
Main Study: Percentage of Participants Achieving Both GC-Free Remission and Normalization of C-Reactive Protein (CRP) at Weeks 28, 32, 36, 40, 44, 48 and 52
GC-free remission at Weeks 28, 32, 36, 40, 44, 48 and 52 was defined as (1) no signs or symptoms of active Giant cell arteritis (GCA) at Weeks 28, 32, 36, 40, 44, 48 and 52 respectively (2) absence of GCA flare from first dose of the study drug through Weeks 28, 32, 36, 40, 44, 48 and 52 (3) adherence to the protocol specified 26-week GC taper regimen. Normalization of CRP is defined as CRP \<10 milligrams per liter (mg/L) or \<1 milligrams per deciliter (mg/dL). GCA flare was defined as the recurrence of signs and symptoms of active GCA, with or without elevation of inflammatory markers, and with the necessity for an increase in GC dose for GCA.
Time frame: Weeks 28, 32, 36, 40, 44, 48 and 52
Main Study: Percentage of Participants Achieving Both GC-Free Remission and Normalization of Both ESR and CRP at Weeks 28, 32, 36, 40, 44, 48 and 52
GC-free remission at Weeks 28, 32, 36, 40, 44, 48 and 52 was defined as (1) no signs or symptoms of active GCA at Weeks 28, 32, 36, 40, 44, 48 and 52 respectively; (2) absence of GCA flare from first dose of the study drug through Weeks 28, 32, 36, 40, 44, 48 and 52; (3) adherence to the protocol specified 26-week GC taper regimen. Normalization of ESR is defined as ESR \< 30 mm/hr at Weeks 28, 32, 36, 40, 44, 48 and 52. Normalization of CRP is defined as CRP \<10 mg/L or \<1 mg/dL. GCA flare was defined as the recurrence of signs and symptoms of active GCA, with or without elevation of inflammatory markers, and with the necessity for an increase in GC dose for GCA.
Time frame: Weeks 28, 32, 36, 40, 44, 48 and 52
Main Study: Cumulative Glucocorticoid (GC) Dose
Total cumulative GC dose administered included GCA taper, GC rescue therapy as well as for all other indications (any oral GC) from baseline (Day 1) up to Weeks 28 and 52 was reported.
Time frame: Baseline (Day 1) up to Weeks 28 and 52
Main Study: Time to First GCA Disease Flare or Discontinuation of Study Intervention Due to Adverse Event (AE) of Worsening of GCA
Time to occurrence of GCA disease flare was defined as the time from first dose of the study agent to the occurrence of the first observation of GCA disease flare or discontinuation due to adverse event (AE) of worsening of GCA. GCA flare was defined as the recurrence of signs and symptoms of active GCA, with or without elevation of inflammatory markers, and with the necessity for an increase in GC dose for GCA.
Time frame: Baseline (Day 1) up to Week 30 and Week 52
Main Study: Number of Participants With GCA Disease Flares or Discontinuation of Study Intervention Due to AE of Worsening of GCA
Number of participants with GCA disease flares or discontinuation of study intervention due to AE of worsening of GCA were reported. GCA flare was defined as the recurrence of signs and symptoms of active GCA, with or without elevation of inflammatory markers, and with the necessity for an increase in GC dose for GCA.
Time frame: Baseline (Day 1) up to Week 30 and Week 52
Main Study: Number of Participants With Treatment-emergent Adverse Events (TEAEs)
Number of participants with TEAEs (including serious and non-serious AEs) were reported. An AE was any untoward medical occurrence in a participant participating in a clinical study that does not necessarily have a causal relationship with the pharmaceutical/biological agent under study. Any AE occurring at or after the initial administration of study intervention through the end of the main study was considered to be treatment emergent.
Time frame: Baseline (Day 1) up to Week 60
Number of Participants With TEAEs by System Organ Class (SOC) With a Frequency Threshold of 5 Percent (%) or More
Number of participants with TEAEs (including serious and non-serious AEs) by SOC with a frequency threshold of 5 percent (%) or more were reported. An adverse event (AE) was any untoward medical occurrence in a participant participating in a clinical study that does not necessarily have a causal relationship with the pharmaceutical/biological agent under study. Any AE occurring at or after the initial administration of study intervention through the end of the main study was considered to be treatment emergent.
Time frame: Baseline (Day 1) up to Week 60
Main Study: Number of Participants With Treatment-emergent Serious Adverse Event (SAEs)
Number of participants with treatment emergent SAEs were reported. An SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Any AE occurred at or after the initial administration of study intervention through the end of the main study was considered to be treatment emergent.
Time frame: Baseline (Day 1) up to Week 60
Main Study: Number of Participants With Clinically Significant Abnormalities in Vital Signs
Number of participants with clinically significant abnormalities in vital signs were reported. Clinically significant abnormal vital signs criteria: Pulse rate: \<50 beats per minutes (bpm) and with greater than (\>) 20 bpm decrease from baseline, \>115 bpm and with \>30 bpm increase from baseline; Systolic blood pressure (SBP): \<90 millimeters of mercury \[mmHg\] and with \>30 mmHg decrease from baseline, \>150 mmHg and with \>40 mmHg increase from baseline; Diastolic blood pressure (DBP): \<50 mmHg and with \>20 mmHg decrease from baseline, \>95 mmHg and with \>30 mmHg increase from baseline; Interarm blood pressure: Interarm blood pressure difference greater than or equal to (\>=) 15 mmHg in systolic blood pressure at 3 consecutive visits; Temperature (Temp): \>38.4 Degree Celsius (C) and with \>=1 C increase from baseline; Weight (kilogram \[kg\]): decrease 10 percent (%) from baseline, increase 10% from baseline; Respiratory Rate: \>20 breaths per minute.
Time frame: Baseline (Day 1) up to Week 60
Main Study: Number of Participants With Clinically Significant Abnormalities in Laboratory Parameters
Number of participants with National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) grade 3 or 4 abnormalities in clinical laboratory tests: hematology and chemistry were reported. Clinical laboratory abnormalities of living participants were assessed as per NCI CTCAE version 5, grades (0-4), where Grade 0-Normal, Grade 1- Mild, Grade 2- Moderate, Grade 3- Severe or medically significant but not immediately life-threatening, Grade 4- Life-threatening consequences. Higher grades showed severe abnormality. As per the discretion of investigator, laboratory abnormalities with NCI CTCAE Grade 3 or 4 were considered clinically significant. Combined data of Grade 3 and 4 abnormalities are reported as planned. Only those categories in which at least 1 participant had data were reported.
Time frame: Baseline (Day 1) up to Week 60
Main Study: Serum Concentrations of Guselkumab
Serum concentrations of Guselkumab over time was reported.
Time frame: Pre-dose and 1 hour post dose on Week 0 (Day 1), Week 4 (Day 28), and Week 8 (Day 56); Week 12 (Day 84), Week 16 (Day 112), Week 28 (Day 196), Week 52 (Day 364)
Main Study: Number of Participants With Antibodies to Guselkumab
Number of participants with antibodies to Guselkumab were reported.
Time frame: Baseline (Day 1) up to Week 28, Week 52