Long-term Extension Study of Ulviprubart (ABC008) in Subjects With Inclusion Body Myositis

NCT ID: NCT06450886

Last Updated: 2025-07-28

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

PHASE2/PHASE3

Total Enrollment

270 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-10-21

Study Completion Date

2029-04-30

Brief Summary

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ABC008-IBM-202 is an open-label, multicenter study to evaluate the safety and efficacy of long-term administration of ulviprubart (ABC008) in subjects with IBM who have completed either Study ABC008-IBM-101 or Study ABC008-IBM-201. Subjects may be enrolled in this study if they meet study eligibility criteria and:

* Have completed the Part 2 (Multiple Ascending Dose \[MAD\]) End of-Treatment (EOT) Visit in Study ABC008-IBM-101; subjects who continued further on into Part 3 of the study (MAD Extension) prior to enrolling in this study are also eligible; OR
* Have completed the Week 80 Follow-up Visit in Study ABC008-IBM-201.

Detailed Description

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ABC008-IBM-202 is an open-label, multicenter study to evaluate the safety and efficacy of long-term administration of ulviprubart (ABC008) in subjects with IBM who have completed either Study ABC008-IBM-101 or Study ABC008-IBM-201. Subjects may be enrolled in this study if they meet study eligibility criteria and:

* Have completed the Part 2 (Multiple Ascending Dose \[MAD\]) End of-Treatment (EOT) Visit in Study ABC008-IBM-101; subjects who continued further on into Part 3 of the study (MAD Extension) prior to enrolling in this study are also eligible; OR
* Have completed the Week 80 Follow-up Visit in Study ABC008-IBM-201. Subjects will enter this study following their initial study such that dosing continues every eight weeks (Q8W) between the last dose in the initial study and the first dose in this long-term extension (LTE) Study IBM-202. Study subjects will continue to receive any ongoing concomitant medications from the initial study.

Subjects will be required to sign an informed consent form before undertaking any study-specific procedures or assessments. Screening is intended to be done at the final visit of the initial study, which will coincide with the Baseline (Day 1) Visit for this study; if this is not possible, the Baseline (Day 1) Visit for this study, including screening, may be conducted at a separate visit (provided it occurs within the visit window defined in Appendix 1 of the protocol). Subsequent study visits will occur every eight weeks until EOT at Week 156, or withdrawal from the study.

Conditions

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Inclusion Body Myositis (IBM)

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Ulviprubart (ABC008) 2.0 mg/kg SC

All eligible subjects, regardless of treatment assignment or dose level in their initial study, will be administered ulviprubart at a dose of 2.0 mg/kg via subcutaneous (SC) injection Q8W.

Group Type EXPERIMENTAL

Ulviprubart (ABC008)

Intervention Type DRUG

All eligible subjects, regardless of treatment assignment or dose level in their initial study, will be administered ulviprubart at a dose of 2.0 mg/kg via subcutaneous (SC) injection Q8W.

Interventions

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Ulviprubart (ABC008)

All eligible subjects, regardless of treatment assignment or dose level in their initial study, will be administered ulviprubart at a dose of 2.0 mg/kg via subcutaneous (SC) injection Q8W.

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* 1\. Able to read, understand, and provide signed informed consent prior to the performance of any study-related procedures.

2\. Has participated in and completed either Study ABC008-IBM-101 or Study ABC008-IBM-201; completion of the prior study will be defined as completion of the Part 2 (MAD) EOT Visit in Study ABC008-IBM-101 (subjects may have continued into Part 3 \[MAD Extension\]) or completion of the Week 80 Follow-up Visit in Study ABC008-IBM-201.

3\. Demonstrated adequate compliance, in the opinion of the Investigator, with the study procedures during Study ABC008-IBM-101 or Study ABC008-IBM-201.

4\. Willing and able to comply with the requirements of the protocol, including traveling to the site for study-related assessments and SC injections of ulviprubart.

5\. Women of childbearing potential (WOCBP) and male subjects with female partners who are WOCBP (based on sex assignation at birth) must agree to use highly effective (\< 1% failure rate) contraception for the duration of the study through 180 days after EOT/ETV.

6\. WOCBP (based on sex assignation at birth) must have a negative urine pregnancy test at the Baseline (Day 1) Visit.

7\. Male subjects (based on sex assignation at birth) must refrain from sperm donation for the duration of the study through 180 days after EOT/ETV.

Exclusion Criteria

* 1\. Has an unresolved clinically significant AE or a clinically significant finding on a clinical laboratory test, ECG, or physical examination during Study ABC008-IBM-101 or Study ABC008 IBM-201 that, in the Investigator's opinion, would limit the subject's ability to participate in or comply with this study.

2\. Participation in another investigational drug study (other than Study ABC008-IBM-101 or Study ABC008-IBM-201) within 30 days prior to the Baseline (Day 1) Visit or five times the half-life of the investigational drug, whichever is longer.

3\. Is not willing or able to comply with the restrictions regarding the use of prohibited medications throughout the study.

4\. Women who are pregnant, lactating, or who plan to become pregnant or initiate lactation during the study.
Minimum Eligible Age

40 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Abcuro, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Neuromuscular Research Center

Phoenix, Arizona, United States

Site Status

University of California Irvine Medical Center (UCIMC) - Amyotrophic Lateral Sclerosis (ALS) and Neuromuscular Center

Irvine, California, United States

Site Status

Keck Hospital of USC

Los Angeles, California, United States

Site Status

Yale School of Medicine

New Haven, Connecticut, United States

Site Status

Neuromuscular Diagnostic Center - Massachusetts General Hospital

Boston, Massachusetts, United States

Site Status

Brigham and Womens Hospital

Boston, Massachusetts, United States

Site Status

Hospital for Special Surgery

New York, New York, United States

Site Status

Duke Neurological Disorders Clinic

Durham, North Carolina, United States

Site Status

University Hospitals Cleveland Medical Center

Cleveland, Ohio, United States

Site Status

Ohio State University Wexner Medical Center

Columbus, Ohio, United States

Site Status

Penn State Health Milton S. Hershey Medical Center

Hershey, Pennsylvania, United States

Site Status

University of Pennsylvania

Philadelphia, Pennsylvania, United States

Site Status

UPMC Arthritis and Autoimmunity Center, Falk Clinic

Pittsburgh, Pennsylvania, United States

Site Status

Austin Neuromuscular Center

Austin, Texas, United States

Site Status

Texas Neurology

Dallas, Texas, United States

Site Status

Nerve and Muscle Center of Texas

Houston, Texas, United States

Site Status

Virginia Commonwealth University

Henrico, Virginia, United States

Site Status

Medical College of Wisconsin

Milwaukee, Wisconsin, United States

Site Status

Royal North Shore Hospital

Saint Leonards, New South Wales, Australia

Site Status

Royal Brisbane and Women's Hospital

Herston, Queensland, Australia

Site Status

Perron Institute for Neurological and Translational Science

Nedlands, Washington, Australia

Site Status

Countries

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United States Australia

Other Identifiers

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ABC008-IBM-202

Identifier Type: -

Identifier Source: org_study_id

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