A Study of IMM0306 in IgG4-Related Disease

June 1, 2026 updated by: ImmuneOnco Biopharmaceuticals (Shanghai) Inc.

A Phase II/III Clinical Study to Evaluate the Efficacy and Safety of IMM0306 in Participants With IgG4-Related Disease (IgG4-RD)

The goal of this clinical trial is to learn if IMM0306 works to reduce the risk of disease relapse in participants with IgG4-related disease (IgG4-RD). It will also learn about the safety and tolerability of IMM0306. The main questions it aims to answer are:

  • Does IMM0306 reduce the risk of disease relapse in participants with IgG4-RD?
  • What medical problems do participants have when receiving IMM0306?
  • How does IMM0306 behave in the body, and does the body develop anti-drug antibodies against IMM0306? In the Phase II part, all participants will receive IMM0306. In the Phase III part, researchers will compare IMM0306 with placebo to evaluate whether IMM0306 reduces the risk of disease relapse in participants with IgG4-RD.

Participants will:

  • Receive IMM0306 or placebo by intravenous infusion once weekly for 4 consecutive weeks, with the same treatment repeated 6 months later
  • Start a planned glucocorticoid taper from Day 1 and gradually reduce oral prednisone or equivalent until complete discontinuation after 8 weeks
  • Visit the study site for efficacy and safety assessments, including disease relapse assessment, IgG4-RD responder index assessment, laboratory tests, imaging examinations, electrocardiograms, pharmacokinetic sampling, immunogenicity sampling, biomarker sampling, and adverse event assessment.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
125

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2
  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Clinical diagnosis of IgG4-RD;
  • Meeting 2019 ACR/EULAR classification criteria with an inclusion score ≥20;
  • At least two organs/sites involved during the disease course;
  • Prior or recent IgG4-RD flare requiring initiation or continuation of GC treatment at informed consent.

Exclusion Criteria:

  • Fibrotic manifestation as the only clinical manifestation of the current relapse;
  • Significant hematologic or hepatic abnormalities;
  • Recent B-cell-depleting therapy, alkylating agents, DMARDs or immunosuppressants;
  • Other chronic active immune diseases requiring long-term use of immunosuppressants;
  • Active malignancy or active malignancy within 10 years;
  • Significant cardiac disease;
  • Active infection or active TB;
  • Severe pulmonary disease;
  • Recent opportunistic infection;
  • Alcohol/drug abuse;
  • Pregnancy, lactation or failure to meet contraception requirements.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Phase II single arm
Drug: IMM0306
1.6mg/kg by intravenous infusion once weekly for 4 consecutive weeks, with the same treatment repeated 6 months later
Experimental: Phase III treatment arm
Drug: IMM0306
1.6mg/kg by intravenous infusion once weekly for 4 consecutive weeks, with the same treatment repeated 6 months later
Placebo Comparator: Phase III control arm
Drug: Placebo
1.6 mg/kg by intravenous infusion once weekly for 4 consecutive weeks, with the same treatment repeated 6 months later

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Time to disease relapse
Time Frame: From Day 1 to the end of Week 26/52
From Day 1 to the end of Week 26/52

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Time Frame
Annualized relapse rate
Time Frame: From Day 1 to the end of Week 26/52
From Day 1 to the end of Week 26/52
Cumulative glucocorticoid dose
Time Frame: From Day 1 to the end of Week 52
From Day 1 to the end of Week 52
Proportion of relapse-free and glucocorticoid-free complete remission
Time Frame: At Week 26/52
At Week 26/52
Incidence of AEs
Time Frame: From Day 1 to the end of Week 52
From Day 1 to the end of Week 52
Incidence of ADA
Time Frame: From Day 1 to the end of Week 38
From Day 1 to the end of Week 38
Cmax
Time Frame: From Day 1 to the end of Week 29
From Day 1 to the end of Week 29
Cmin
Time Frame: From Day 1 to the end of Week 29
From Day 1 to the end of Week 29

Other Outcome Measures

Other Outcome Measures

For clinical trials, a planned measurement described in the protocol that is used to determine the effect of an intervention/treatment on participants. For observational studies, a measurement or observation that is used to describe patterns of diseases or traits, or associations with exposures, risk factors, or treatment. Types of outcome measures include primary outcome measure and secondary outcome measure.
Outcome Measure
Time Frame
Change from baseline in B-cell subsets
Time Frame: From Day 1 to the end of Week 52
From Day 1 to the end of Week 52
Change from baseline in complement levels
Time Frame: From screening to the end of Week 52
From screening to the end of Week 52

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
ImmuneOnco Biopharmaceuticals (Shanghai) Inc.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
July 1, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
May 1, 2030

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
May 1, 2030

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
May 17, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 1, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 2, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 2, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 1, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
May 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • IMM0306-IgG4RD-301

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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