Brief Summary
This study aims to examine the efficacy and safety of obexelimab for the prevention of flare of IgG4-related disease (IgG4-RD)
Brief Title
A Phase 3 Study of Obexelimab in Patients with IgG4-Related Disease
Detailed Description
This study consists of a 1-year randomized control period (RCP), followed by an additional 2-year open label extension (OLE) period.
To enter the Screening Period (Day -28 to Day -1), patients must have active IgG4-RD signs/symptoms (i.e., flare) that require steroid therapy. On Day 1, patients will be randomized in a ratio of 1:1 to receive either obexelimab or placebo administered as subcutaneous (SC) injections. All patients will begin a steroid taper on Day 1 to discontinuation by Week 8.
Patients will be monitored for flares during scheduled in clinic visits and any unscheduled visits. The primary endpoint is time to first IgG4-RD flare that requires initiation of rescue therapy in the opinion of the investigator and the Adjudication Committee (AC).
Following the 52-week RCP, patients will have the opportunity to continue in an OLE period where all patients will receive obexelimab. Patients who do not wish to enroll into the OLE period will return for an in-clinic safety follow-up visit 8 weeks after the Week 52 visit (i.e., Week 60).
Including screening and follow-up, the maximum duration of participation in this study for an individual patient is 172 weeks (i.e., 28-day screening, 52-week RCP, 104-week OLE, and an 12-week follow-up).
To enter the Screening Period (Day -28 to Day -1), patients must have active IgG4-RD signs/symptoms (i.e., flare) that require steroid therapy. On Day 1, patients will be randomized in a ratio of 1:1 to receive either obexelimab or placebo administered as subcutaneous (SC) injections. All patients will begin a steroid taper on Day 1 to discontinuation by Week 8.
Patients will be monitored for flares during scheduled in clinic visits and any unscheduled visits. The primary endpoint is time to first IgG4-RD flare that requires initiation of rescue therapy in the opinion of the investigator and the Adjudication Committee (AC).
Following the 52-week RCP, patients will have the opportunity to continue in an OLE period where all patients will receive obexelimab. Patients who do not wish to enroll into the OLE period will return for an in-clinic safety follow-up visit 8 weeks after the Week 52 visit (i.e., Week 60).
Including screening and follow-up, the maximum duration of participation in this study for an individual patient is 172 weeks (i.e., 28-day screening, 52-week RCP, 104-week OLE, and an 12-week follow-up).
Categories
Completion Date
Completion Date Type
Estimated
Conditions
IgG4 Related Disease
Eligibility Criteria
Inclusion Criteria:
1. Males and females, ≥ 18 years of age
2. Clinical diagnosis of IgG4-RD
3. Patients must meet the 2019 ACR/EULAR Classification Criteria for IgG4-RD
4. Patients must have active IgG4-RD signs/symptoms (i.e., flare) that require the initiation of GC therapy or the increase in background long-term GC therapy
5. Other inclusion criteria apply
Exclusion Criteria:
1. Has disease in only 1 organ system whose primary manifestation is fibrosis
2. Has received prednisone equivalent given orally at a dose greater than 60 mg/day within the 4 weeks prior to screening or during screening
3. Has received a non-biologic, disease-modifying anti-rheumatological drug or immunosuppressive agent other than GCs within the 4 weeks prior to screening
4. Has received an investigational treatment or direct medical intervention on another clinical study within 12 weeks or \< 5 half-lives of the investigational treatment, whichever is shorter, prior to screening
5. Has received live vaccine or live therapeutic infectious agent within the 2 weeks prior to screening
6. Active tuberculosis or high risk for tuberculosis; hepatitis C infection in absence of curative treatment; evidence of hepatitis B infection
7. Use of B cell depleting or targeting agents within 6 months of randomization
8. Other exclusion criteria apply
1. Males and females, ≥ 18 years of age
2. Clinical diagnosis of IgG4-RD
3. Patients must meet the 2019 ACR/EULAR Classification Criteria for IgG4-RD
4. Patients must have active IgG4-RD signs/symptoms (i.e., flare) that require the initiation of GC therapy or the increase in background long-term GC therapy
5. Other inclusion criteria apply
Exclusion Criteria:
1. Has disease in only 1 organ system whose primary manifestation is fibrosis
2. Has received prednisone equivalent given orally at a dose greater than 60 mg/day within the 4 weeks prior to screening or during screening
3. Has received a non-biologic, disease-modifying anti-rheumatological drug or immunosuppressive agent other than GCs within the 4 weeks prior to screening
4. Has received an investigational treatment or direct medical intervention on another clinical study within 12 weeks or \< 5 half-lives of the investigational treatment, whichever is shorter, prior to screening
5. Has received live vaccine or live therapeutic infectious agent within the 2 weeks prior to screening
6. Active tuberculosis or high risk for tuberculosis; hepatitis C infection in absence of curative treatment; evidence of hepatitis B infection
7. Use of B cell depleting or targeting agents within 6 months of randomization
8. Other exclusion criteria apply
Inclusion Criteria
Inclusion Criteria:
1. Males and females, ≥ 18 years of age
2. Clinical diagnosis of IgG4-RD
3. Patients must meet the 2019 ACR/EULAR Classification Criteria for IgG4-RD
4. Patients must have active IgG4-RD signs/symptoms (i.e., flare) that require the initiation of GC therapy or the increase in background long-term GC therapy
5. Other inclusion criteria apply
1. Males and females, ≥ 18 years of age
2. Clinical diagnosis of IgG4-RD
3. Patients must meet the 2019 ACR/EULAR Classification Criteria for IgG4-RD
4. Patients must have active IgG4-RD signs/symptoms (i.e., flare) that require the initiation of GC therapy or the increase in background long-term GC therapy
5. Other inclusion criteria apply
Gender
All
Gender Based
false
Keywords
IgG4
IgG4-RD
Healthy Volunteers
No
Last Update Post Date
Last Update Post Date Type
Actual
Last Update Submit Date
Minimum Age
18 Years
NCT Id
NCT05662241
Org Class
Industry
Org Full Name
Zenas BioPharma (USA), LLC
Org Study Id
ZB012-03-001
Overall Status
Active, not recruiting
Phases
Phase 3
Primary Completion Date
Primary Completion Date Type
Estimated
Official Title
A Phase 3, Multicenter, Randomized, Double-blind, Placebo-controlled Study to Evaluate the Efficacy and Safety of Obexelimab in Patients with IgG4-Related Disease (INDIGO)
Primary Outcomes
Outcome Description
Time to first IgG4-RD flare, defined as the reappearance of previous signs/symptoms or appearance of new signs/symptoms of IgG4-RD that requires initiation of rescue therapy in the opinion of the investigator and the Adjudication Committee (AC), from randomization to Week 52.
Outcome Measure
Primary outcome measure
Outcome Time Frame
Randomization to Week 52
Start Date
Start Date Type
Actual
Status Verified Date
First Post Date
First Post Date Type
Actual
First Submit Date
First Submit QC Date
Std Ages
Adult
Older Adult
Maximum Age Number (converted to Years and rounded down)
999
Minimum Age Number (converted to Years and rounded down)
18
Investigators
Investigator Type
Principal Investigator
Investigator Name
Bibi Ayesha
Investigator Email
bayesha@montefiore.org