Prediction of Abatacept Discontinuation Using Test Reflecting Immunological Remission in Rheumatoid Arthritis

NCT ID: NCT04343378

Last Updated: 2025-03-06

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

COMPLETED

Total Enrollment

40 participants

Study Classification

OBSERVATIONAL

Study Start Date

2020-06-08

Study Completion Date

2024-11-14

Brief Summary

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The objective of this study is to identify a panel of immunological molecular and cellular biomarkers able to predict the success of major dose-reduction or discontinuation of abatacept in rheumatoid arthritis patients

Detailed Description

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Parameters studied at different time points (before initiation of abatacept if sample is available in our biocollection; prior to dose tapering; prior to discontinuation) ACPA (anti-citrullinated proteins antibodies) repertoire

-IgG (Immunoglobulins G) and/or IgA auto-antibodies repertoire directed against major epitopes of well-known autoantigens

B cell repertoire B cell repertoire and transcriptome of regulatory B lymphocytes, memory B cells and B cells targeting specific autoantigens.

Analysis of type I interferon signature Expression levels of 7 type I interferon (IFN) response genes will be determined to calculate on type I IFN score

Conditions

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Rheumatoid Arthritis

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Eligibility Criteria

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Inclusion Criteria

* Rheumatoid arthritis (RA) patients (\> pr = 18 years) fulfilling the 2010 ACR/EULAR criteria
* Associated to high levels (\> 3 x upper limit of normal in UA/ml) of ACPA measured by the usual anti-CCP(cyclic citrullinated proteins)2 test at the start of abatacept treatment
* Receiving IV (intravenous) or SC (subcutaneous) abatacept alone or in combination with a conventional Disease Modyfying AntiRheumatic Drugs (cDMARD) (methotrexate, leflunomide, sulfasalasin in monotherapy or in combination) according to the usual scheme or in tapering phase
* Without intra-articular injections of corticosteroids during the last 6 months prior to down-titration of abatacept
* Having discontinued corticosteroids at he time of entrance in the study
* In deep remission (Disease Activity Score (DAS) 28 ESR (or CRP) \< 2.6 without clinical synovitis) since at least 1 year
* In sonographic remission at the time of enrollment (absence of PD (Power Doppler)-positive synovitis on 28 joints defined by a score \< 2 on a 0-3 semi-quantitative scale for each joint)

Exclusion Criteria

* Age \< 18 years
* RA negative for ACPA (anti-citrullinated proteins antibodies) or not fulfilling ACR/EULAR criteria
* Abatacept discontinuation due to serious adverse event, loss of efficacy or pregnancy project
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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University Hospital, Rouen

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Olivier VITTECOQ, Pr

Role: PRINCIPAL_INVESTIGATOR

University Hospital, Rouen

Locations

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Rouen University Hospital

Rouen, , France

Site Status

Countries

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France

Other Identifiers

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2019/291/OB

Identifier Type: -

Identifier Source: org_study_id

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