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Efficacy and Safety of Ivarmacitinib Monotherapy in the Treatment of csDMARDs-IR Rheumatoid Arthritis

NCT07452445 · Status: NOT_YET_RECRUITING · Phase: PHASE4 · Type: INTERVENTIONAL · Enrollment: 100

Last updated 2026-03-05

No results posted yet for this study

Summary

Rheumatoid arthritis (RA) is a chronic autoimmune disease affecting small joints, with a global prevalence of 0.5%-1.0% and 0.42% in China (around 5 million patients, mostly female and over 55). By 2050, RA patients worldwide are estimated to reach 31.7 million, an 80.2% increase from 2020. RA causes high disability rates, economic burdens, and can affect internal organs, leading to complications. Current treatments include csDMARDs (e.g., methotrexate, first-line but ineffective in half to two-thirds of patients), bDMARDs, tsDMARDs, NSAIDs, glucocorticoids, and traditional Chinese medicine.

Studies have explored bDMARDs' efficacy in csDMARDs-IR patients. Switching to or adding upadacitinib improves ACR20 response rates, with monotherapy showing higher safety. Filgotinib also showed superior efficacy over placebo in methotrexate-IR patients.

Ivarmacitinib, a novel JAK1 inhibitor, blocks cytokine signaling to reduce inflammation. A Phase II study (SHR0302-201) in moderate-to-severe RA patients showed ivarmacitinib 8 mg group had the highest ACR20 response rate (77.8%) after 12 weeks, with a dose-response relationship observed for ACR50/70 and DAS28-CRP improvements. TEAEs occurred in 73.9% of ivarmacitinib-treated patients, mostly infections, with upper respiratory tract infection being the most common.

A Phase III study (SHR0302-301) also in moderate-to-severe RA patients showed similar results after 24 weeks, with the ivarmacitinib 8 mg group again having the highest ACR20 response rate (75.1%). AEs were comparable between placebo and ivarmacitinib 4 mg groups but higher in the 8 mg group, with upper respiratory tract infection, anemia, and hyperlipidemia being common.

This project aims to investigate ivarmacitinib's therapeutic efficacy and safety in csDMARDs-IR RA patients, providing evidence for its use as a second-line treatment and exploring its effects at the single-cell sequencing and RNA-seq levels, offering new treatment options.

Conditions

Interventions

DRUG

Ivarmacitinib

4-week screening period 12-week core treatment period: Emmacitinib 4mg group, oral administration, once daily. 12-week extended treatment period: Emmacitinib 4mg group or 8mg group, oral administration, once daily. 4-week follow-up period period

Sponsors & Collaborators

  • Jiangsu HengRui Medicine Co., Ltd.

    collaborator INDUSTRY

  • Tongji Hospital

    lead OTHER

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
75 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-03-01
Primary Completion
2028-03-01
Completion
2029-03-01

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07452445 on ClinicalTrials.gov