A Study of MT-0551 in Patients With Systemic Sclerosis

NCT ID: NCT05198557

Last Updated: 2025-12-08

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

PHASE3

Total Enrollment

80 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-07-20

Study Completion Date

2026-08-31

Brief Summary

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The study will verify the superiority of MT-0551 to placebo at 26 weeks after treatment initiation in systemic sclerosis (SSc) patients using the modified Rodnan Total Skin thickness Score (mRTSS) as a measure of skin thickening. The safety and pharmacokinetics will also be investigated.

Detailed Description

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Conditions

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Systemic Sclerosis

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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MT-0551 group

Participants will receive intravenous (IV) inebilizumab on Day 1 and Day 15 of randomized controlled period (RCP). The participants who entered open label period (OLP) will receive IV inebilizumab on Day 1 and IV placebo on Day 15 of OLP and will be followed by IV inebilizumab every 26 weeks.

Group Type EXPERIMENTAL

Inebilizumab

Intervention Type DRUG

Participants will receive IV inebilizumab.

Placebo

Intervention Type DRUG

Participants will receive IV placebo matched to inebilizumab.

Placebo group

Participants will receive IV placebo on Day 1 and Day 15 of the RCP. The participants who entered OLP will receive IV inebilizumab on both Day 1 and Day 15 in OLP and will be followed by IV inebilizumab every 26 weeks.

Group Type PLACEBO_COMPARATOR

Inebilizumab

Intervention Type DRUG

Participants will receive IV inebilizumab.

Placebo

Intervention Type DRUG

Participants will receive IV placebo matched to inebilizumab.

Interventions

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Inebilizumab

Participants will receive IV inebilizumab.

Intervention Type DRUG

Placebo

Participants will receive IV placebo matched to inebilizumab.

Intervention Type DRUG

Other Intervention Names

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MT-0551

Eligibility Criteria

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Inclusion Criteria

Additional screening criteria check may apply for qualification:

1. ACR/European League Against Rheumatism (EULAR) criteria (2013) systemic sclerosis (SSc) diagnostic criteria satisfied.
2. Skin thickening score based on the mRTSS between 10 and 22 inclusive.

Exclusion Criteria

Additional screening criteria check may apply for qualification:

1. Pulmonary hypertension associated with SSc.
2. Presence of a serious, SSc-related concurrent illness other than interstitial pneumonia.
3. Finding of inadequate respiratory reserve capacity.
4. Past history of rituximab, blinatumomab, obinutuzumab, or ofatumumab.
5. Presence of a clinically significant active infection requiring antimicrobial therapy.
6. A past history of cancer.
7. Past history of a recurrent, clinically significant infection.
8. Past history of severe allergy or anaphylactic reaction to a biologic drug product.
9. Treatment with live vaccine within a certain period (inactivated vaccine is acceptable).
Minimum Eligible Age

20 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Tanabe Pharma Corporation

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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General Manager

Role: STUDY_DIRECTOR

Tanabe Pharma Corporation

Locations

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University of Fukui Hospital

Yoshida-gun, Fukui, Japan

Site Status

Kanazawa University Hospital

Kanazawa, Ishikawa-ken, Japan

Site Status

St. Marianna University Hospital

Kawasaki-shi, Kanagawa, Japan

Site Status

The University of Tokyo Hospital

Bunkyo-ku, Tokyo, Japan

Site Status

Countries

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Japan

Other Identifiers

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MT-0551-A-301

Identifier Type: -

Identifier Source: org_study_id

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