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Phase 2b Study to Evaluate Tulisokibart for Rheumatoid Arthritis

A Phase 2b, Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Efficacy and Safety of Tulisokibart in Participants With Rheumatoid Arthritis

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2031250408
Enrollment
182
Registered
2025-10-02
Start date
2025-11-05
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Rheumatoid Arthritis

Interventions

- High-dose tulisokibart group: Subcutaneous administration of high-dose tulisokibart in addition to methotrexate background therapy. - Medium-dose tulisokibart group: Subcutaneous administration of m

Sponsors

Iwamoto Taro
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: - Has a clinical diagnosis of rheumatoid arthritis (RA) and fulfillment of 2010 American College of Rheumatology (ACR)/European League Against Rheumatism (EULAR) classification criteria - Has active disease defined as >=6 tender joints (based on 68 joints) and >=6 swollen joints (based on 66 joints) - Has current treatment with oral or parenteral methotrexate therapy - Has history of one of the following: a) biologic disease-modifying antirheumatic drug (bDMARD) naive, or b) bDMARD-Inadequate Response (IR)/intolerant up to a maximum of 2 classes of bDMARDS

Exclusion criteria

Exclusion criteria: - Has any arthritis with onset before age 17 years or current diagnosis of inflammatory joint disease other than RA (such as, but not limited to, psoriatic arthritis, systemic lupus erythematosus, gout, systemic sclerosis, myositis, pseudogout, etc) or any other condition that may, in the judgment of the investigator, interfere with the assessment of RA - Has a history of cancer (except fully treated nonmelanoma skin cancers or cervical carcinoma in situ after complete surgical removal) and is disease free for <5 years before randomization - Has any active infection - Has known allergies, hypersensitivity, or intolerance to tulisokibart or its excipients

Design outcomes

Primary

MeasureTime frame
- Proportion of Participants Achieving American College of Rheumatology 20% Response Criteria (ACR20) at Week 12

Secondary

MeasureTime frame
- Proportion of Participants Achieving American College of Rheumatology 50% Response Criteria (ACR50) at Week 12 - Proportion of Participants Achieving American College of Rheumatology 70% Response Criteria (ACR70) at Week 12 - Proportion of Participants Achieving Low Disease Activity (LDA) based on Disease Activity Score 28 Using C-Reactive Protein (DAS28-CRP) - Change From Baseline in the Health Assessment Questionnaire Disability Index (HAQ-DI) Score at Week 12 - Number of Participants Who Experience One or More Adverse Events (AEs) - Number of Participants Who Discontinue Study Intervention Due to an AE

Countries

Canada, Chile, China, Columbia, Germany, Japan, Poland, South Korea, Spain, UK, USA

Contacts

Public ContactMSDJRCT inquiry mailbox

MSD K.K.

msdjrct@msd.com+81-3-6272-1957

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026