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Defining clinical and molecular subgroups of difficult to treat RA

Defining clinical and molecular phenotypes in the Prospective Observational MDR-RA cohort study and all-encompassing Biomedical Resource - PrOb-MDR-RA

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
NL-OMON
Registry ID
NL-OMON58332
Enrollment
5
Registered
2025-07-15
Start date
2026-07-01
Completion date
Unknown
Last updated
2026-07-20

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

Conditions

rheumatoid arthritis, rheuma

Interventions

None listed

Sponsors

Humanitas University, Milano
Lead Sponsor

Eligibility

Age
18 Years to 99 Years

Inclusion criteria

Inclusion criteria: 1. Adults aged 18 or over with a diagnosis of rheumatoid arthritis (2010 ACR/EULAR criteria) and meeting the Difficult-to-treat RA definition* 2. Willing and capable of giving informed consent, and the consent must be obtained prior to any study-specific screening procedures 3. At least one swollen joint, which is amenable to synovial biopsy 4. Patient is judged by the supervising clinician to be a suitable candidate based upon medical history, physical examination, vital signs, and routine laboratory tests 5 Willing and able to comply with scheduled visits, laboratory tests, and other study procedures *Difficult-to-Treat: 1) Treatment according to European League Against Rheumatism (EULAR) recommendation and failure of =2 bDMARDs)/tsDMARDs (with different mechanisms of action) after failing conventional synthetic DMARD therapy (unless contraindicated); (2) presence of at least one of the following: at least moderate disease activity; signs and/or symptoms suggestive of active disease; inability to taper glucocorticoid treatment; rapid radiographic progression; RA symptoms that are causing a reduction in quality of life; and (3) the management of signs and/or symptoms is perceived as problematic by the rheumatologist and/or the patient

Exclusion criteria

Exclusion criteria: 1. Patients in whom synovial biopsy is contra-indicated (e.g., taking anti-coagulants), or in whom this is contraindicated at physician’s discretion (e.g., patients with bleeding disorders). Patients on short-acting direct oral anticoagulant agents can be considered when anti-coagulant can be temporarily stopped, in line with local guidelines for procedures with a low risk of bleeding, taking into account the individual thromboembolic risk. Oral anti-platelet agents are permitted. 2. Patients in whom there is no suitable joint for biopsy 3. Patients with a serious underlying medical disorder (e.g., end-stage renal disease, severe respiratory failure) 4. Poor tolerability of venopuncture or lack of adequate venous access for required blood sampling during the study period 5. Intra-articular or parenteral corticosteroids =4 weeks prior to the biopsy/baseline visit and patients taking > 10mg/day prednisone or equivalent.6. Active infection or any other contraindications to start TNFi, IL6Ri, or JAKi, as per local/international guidelines and SmPC 7. Pregnant women 8. Individuals who are unable to give informed consent for any reason (vulnerable groups).

Design outcomes

Primary

MeasureTime frame
PrOb-MDR-RA will enable the development of a prospective observational MDR-RA patients cohort, with high-quality clinical and imaging data, together with a comprehensive collection of biological samples (blood and synovial tissue), followed-up for an adequate period of time to provide consistent outcomes.

Countries

Austria, Belgium, Denmark, Germany, Italy, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, United Kingdom

Contacts

Public ContactJ.M. van Laar

Universitair Medisch Centrum Utrecht

j.m.vanlaar@umcutrecht.nl0887557357

Outcome results

None listed

Source: NL-OMON (via WHO ICTRP) · Data processed: Jul 23, 2026