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- Essai clinique NCT02130076
Interruption of TNFinhibitors and Endothelial Function (POET-VEF)
The Effect of Interruption of TNFi on Endothelial Function in Patients With Rheumatoid Arthritis
Aperçu de l'étude
Statut
Les conditions
Description détaillée
Patients with rheumatoid arthritis (RA) have an increased risk of cardiovascular events. This increased risk is thought to be driven by inflammation-induced endothelial dysfunction, an initial step in atherogenesis. Both systemic as well as local (intra-arterial) treatment with anti-TNF-antibody therapy improves endothelial function in patients with vasculitis or RA as reflected by the vasodilator response to intra-arterially infused acetylcholine. Also other vascular functions that are (at least partially) endothelium-dependent such as flow-mediated dilation of the brachial artery and pulse wave velocity are improved when active RA patients are being treated with methotrexate plus TNFi, i.e. infliximab or etanercept. ( Therefore one may hypothesize that when TNFi therapy is stopped, endothelial function may worsen even in the absence of recurrence of systemic inflammation or reactivation of arthritis. Endothelial function tests are a marker of long-term cardiovascular mortality. If stopping TNFi results in worsening of endothelial function this would strongly suggest a higher cardiovascular risk in association with TNFi-wthdrawal. These findings would indicate an important drawback for stopping TNFi in RA patients.
To date it is unclear whether the worsening of endothelial function occurs within half a year following the (successful) cessation of TNFi, whether this decline occurs simultaneously, or prior to RA exacerbation and whether this deterioration process is delayed by additional use of statin and/or ACEi.
To improve cardiovascular prognosis in RA significantly it is important to increase our knowledge regarding these processes.
Type d'étude
Inscription (Anticipé)
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
Méthode d'échantillonnage
Population étudiée
La description
Inclusion Criteria:
- Informed consent for POEET trial and this additional study
- On stable medication (except for TNFi-therapy)
Exclusion Criteria:
- Uncontrolled hypertension (RR > 140/90 mmHg average of three measurements at screening after 5 minutes of supine rest)
- Diabetes mellitus
- Heart failure or any other cardiovascular disease that is expected to induce changes in cardiovascular medication during the study period.
- Expected to start or change medication that can alter endothelial function (lipid lowering drugs, blood pressure lowering drugs, NSAIDs, immunosuppressive therapy other than TNFi drugs)
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
Cohortes et interventions
Groupe / Cohorte |
|---|
|
Stop
Patients with stable RA stopping TNF inhibition
|
|
Continue
Patients with stable RA continuing TNFi therapy
|
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Response to acetylcholine
Délai: 6 months
|
The primary endpoint is the interaction between TNFi-withdrawal and the vasodilator response to acetylcholine expressed as difference in FBF between the withdrawal group and the continuing group.
|
6 months
|
Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
TNFi withdrawal and response to nitroprusside
Délai: 6 months
|
Secondary endpoints are the interaction between TNFi-withdrawal and the vasodilator response to nitroprusside (expressed as difference in FBF between the withdrawal group and the continuing group).
The response to SNP serves as an internal vasodilator control to assess potential endothelium-independent effects of TNFi-withdrawal on the response to acetylcholine.
|
6 months
|
|
VCAM and SCAM
Délai: 6 months
|
6 months
|
Collaborateurs et enquêteurs
Parrainer
Publications et liens utiles
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude
Achèvement primaire (Anticipé)
Achèvement de l'étude (Anticipé)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Estimation)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Estimation)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- IMM11-0103
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