- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica NCT02060318
Regulatory T-cells and Crohn's Disease (CrohnReg)
The Effect of Infliximab Therapy in Crohn Patients on Regulatory T-cells
Aim: the main aim of this study is to investigate if immune cells (regulatory T-cells, Th17 cells and other immune cell types) or biomarkers can be used to predict the response or lack of response to treatment with Infliximab. If so, characteristics of the immune cells may also unveil the mechanisms behind lack of response to Infliximab.
Design: a prospective, observational study with three arms. In the treatment group, 35 patients with Crohn's disease about to start Infliximab-treatment are recruited. They have blood samples drawn at day 1 before first treatment, after 6 week, and again after 22 weeks of treatment. 12 healthy volunteers serve as a control group. Controls are only investigated once. All treatment and follow-up are according to national guidelines, and data from this study is not used by the clinicians.
Methods: the number of regulatory T-cells and pro-inflammatory T-cells (Th17 cells) is investigated using flow cytometry. From plasma and serum samples, various proteins (biomarkers), such as transforming growth factor beta (TGF-beta) and tumour necrosis factor alpha (TNF-alpha), are measured using immunoassays. Patient data (demographics and medical history) are extracted from various registries.
Panoramica dello studio
Descrizione dettagliata
Primary analyses: patient response to Infliximab treatment is quantified using Harvey Bradshaw Index, and the response is then related to the number of regulatory T-cells, Th17 cells, and biomarker levels at baseline. The exact cut-off for response vs. non-respons will be determined and validated once all data is collected by an assessor blinded for the flow cytometry results and biomarker levels.
Plan for missing data: for patients with missing Harvey Bradshaw Index, we will first try to re-create the score using the patient records (information on well-being, abdominal pain, diarrhea, fistulae/abscesses, and extra-intestinal Crohn manifestations). If this is not possible, an experienced clinician will rate the patient's Infliximab response based on all available patient record data, but blinded for flow cytometry results and biomarker levels.
Tipo di studio
Iscrizione (Effettivo)
Contatti e Sedi
Luoghi di studio
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Copenhagen
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Hvidovre, Copenhagen, Danimarca, 2650
- Hvidovre Hospital
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Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Metodo di campionamento
Popolazione di studio
Patients from the gastroenterology department at Hvidovre Hospital and Køge Sygehus are eligible for entry.
Healthy controls are recruited by advitising at Hvidovre Hospital.
Descrizione
Infliximab group
Inclusion Criteria:
- Crohn's Disease
- Starting Infliximab treatment
- Patient at the gastrointestinal department at Hvidovre Hospital or Køge Sygehus
- Can understand and write Danish
- European ancestry
Exclusion Criteria:
- Not able to consent in an ethical manner (e.g. severe mental illness)
- Significant co-morbidity (e.g. cancer, HIV)
- Other immunological disease (e.g. psoriasis)
- Current treatment with biological agents
Healthy controls
Inclusion Criteria:
- No current disease
- No daily drug use
- Can understand and write Danish
- European ancestry
Exclusion Criteria:
- Not able to consent in an ethical manner (e.g. severe mental illness)
- Significant co-morbidity (e.g. cancer, HIV)
- Other immunological disease (e.g. psoriasis)
- Current treatment with biological agents
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
Coorti e interventi
Gruppo / Coorte |
Intervento / Trattamento |
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Infliximab
35 Crohn patients about to start Infliximab treatment, gives as i.v.
injection of 5 mg/kg at baseline, after 2 weeks, 6 weeks, and then every 8th week.
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The patients are included in the study when the decision to treat with Infliximab is already made.
This study is observational, and all treatment and clinical follow-up are according to national guidelines.
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Healthy controls
12 healthy controls without Crohn's Disease.
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Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
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Change from baseline in number of regulatory T-cells at 6 weeks
Lasso di tempo: Baseline, 6 weeks (plus/minus 1 week)
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The number of regulatory T-cells is measured in fresh blood by flow cytometry.
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Baseline, 6 weeks (plus/minus 1 week)
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Change from baseline in number of regulatory T-cells at 22 weeks
Lasso di tempo: Baseline, 22 weeks (plus/minus 1 week)
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The number of regulatory T-cells is measured in fresh blood by flow cytometry.
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Baseline, 22 weeks (plus/minus 1 week)
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Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
---|---|---|
Change from baseline in Harvey Bradshaw Index at 6 weeks
Lasso di tempo: Baseline, 6 weeks (plus/minus 1 week)
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Harvey Bradshaw Index is a measure of Crohn's Disease severity.
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Baseline, 6 weeks (plus/minus 1 week)
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Change from baseline in CD161 expression at 6 weeks
Lasso di tempo: Baseline, 6 weeks (plus/minus 1 week)
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Cluster of differentiation 161 (CD161) is a T helper 17 cell (Th17)-marker, measured by flow cytometry of fresh blood samples.
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Baseline, 6 weeks (plus/minus 1 week)
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Change from baseline in CD161 expression at 22 weeks
Lasso di tempo: Baseline, 22 weeks (plus/minus 1 week)
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CD161 is a Th17-marker, measured by flow cytometry of fresh blood samples.
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Baseline, 22 weeks (plus/minus 1 week)
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Change from baseline in cytokine levels at 6 weeks
Lasso di tempo: Baseline, 6 weeks (plus/minus 1 week)
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We will measure IFN-gamma, IL-4, IL-6, IL-7, IL-10, IL-15, IL-17, and TNF-alpha by Luminex.
TGF-beta, suPAR, and IL-15 will be measured by ELISA.
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Baseline, 6 weeks (plus/minus 1 week)
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Change from baseline in cytokine levels at 22 weeks
Lasso di tempo: Baseline, 22 weeks (plus/minus 1 week)
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We will measure IFN-gamma, IL-4, IL-6, IL-7, IL-10, IL-15, IL-17, and TNF-alpha by Luminex.
TGF-beta, suPAR, and IL-15 will be measured by ELISA.
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Baseline, 22 weeks (plus/minus 1 week)
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Change from baseline in Harvey Bradshaw Index at 22 weeks
Lasso di tempo: Baseline, 22 weeks (plus/minus 1 week)
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Harvey Bradshaw Index is a measure of Crohn's Disease severity.
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Baseline, 22 weeks (plus/minus 1 week)
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Collaboratori e investigatori
Sponsor
Investigatori
- Investigatore principale: Ove Andersen, MD, PhD, Hvidovre Hospital & University of Copenhagen
Studiare le date dei record
Studia le date principali
Inizio studio (Effettivo)
Completamento primario (Effettivo)
Completamento dello studio (Effettivo)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Stima)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Effettivo)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Termini MeSH pertinenti aggiuntivi
Altri numeri di identificazione dello studio
- H-1-2013-072
- HVH-2013-028 (Identificatore di registro: Datatilsynet)
Piano per i dati dei singoli partecipanti (IPD)
Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?
Descrizione del piano IPD
Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .
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