E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Treatment of active, moderate Crohn’s disease |
Trattamento di pazienti con morbo di Crohn di grado moderato in fase attiva |
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E.1.1.1 | Medical condition in easily understood language |
Treatment of active, moderate Crohn’s disease |
Trattamento di pazienti con morbo di Crohn di grado moderato in fase attiva |
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E.1.1.2 | Therapeutic area | Diseases [C] - Digestive System Diseases [C06] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 14.1 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10011401 |
E.1.2 | Term | Crohn's disease |
E.1.2 | System Organ Class | 10017947 - Gastrointestinal disorders |
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E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
To evaluate the effect of Rifaximin-EIR, administered at a daily dosage of 1,600 mg (2 x 400 mg tablet twice a day) for three months in patients with a moderately active Crohn's disease in terms of clinical response and correlation with endoscopic improvement to Rifaximin-EIR treatment. |
Valutare l’effetto di Rifaximina-EIR somministrata alla dose giornaliera di 1600 mg (2 compresse da 400 mg due volte al giorno) per 3 mesi in pazienti con morbo di Crohn moderato in fase attiva in termini di risposta clinica e correlazione con un miglioramento del quadro endoscopico intestinale. |
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E.2.2 | Secondary objectives of the trial |
To evaluate the effect of Rifaximin-EIR, administered at a daily dosage of 1,600 mg (2 x 400 mg tablet twice a day) for three months in patients with a moderately active Crohn's disease in terms of: • Changes in the expression and function of nuclear Pregnane-X-Receptor (PXR) and PXR metabolic and inflammatory target genes, • Correlation between the induced changes in the expression and function of PXR and PXR target genes and clinical and/or endoscopic response to Rifaximin-EIR treatment. |
Valutare l’effetto di Rifaximina-EIR somministrata alla dose giornaliera di 1600 mg (2 compresse da 400 mg due volte al giorno) per 3 mesi in pazienti con morbo di Crohn moderato in fase attiva in termini di: • Variazione dei livelli di espressione e della funzionalità del recettore X del pregnano (PXR) e di geni coinvolti nel metabolismo degli xenobiotici e dell’ infiammazione, • Correlazione tra variazione dei livelli di espressione genica di PXR e di geni coinvolti nel metabolismo degli xenobiotici e dell’ infiammazione e miglioramento del quadro clinico e/o endoscopico. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
The study will include patients with active, moderate Crohn’s disease defined by a CDAI score of ≥ 220 and ≤ 400, localised in the ileocolon or colon (documented either radiologically or endoscopically at least 3 months before inclusion in the study). |
Lo studio coinvolgerà pazienti con morbo di Crohn moderato in fase attiva(CDAI ≥ 220 and ≤ 400), localizzato a livello della porzione ileo-colica o colica dell’intestino (con evidenza radiologica o endoscopica ottenuta almeno tre mesi prima del coinvolgimento nello studio). |
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E.4 | Principal exclusion criteria |
Patients with symptoms attributed to Short Bowel Syndrome, patients potentially requiring immediate surgery for CD will be not included into the study. |
Verranno esclusi dallo studio, pazienti con sintomi attribuibili a sindrome dell’ intestino corto o quelli che necessitano di intervento chirurgico per morbo di Crohn. |
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E.5 End points |
E.5.1 | Primary end point(s) |
1. The proportion of patients achieving a clinical response, defined as a CDAI reduction of ≥ 70 points from baseline value at the end of treatment; 2. The proportion of patients achieving an endoscopic improvement, defined as the achievement of a one-class change (e.g. from moderately active to mildly active) in the Simplified Endoscopic Activity Score for Crohn's Disease (SES-CD); 3. The proportion of patients achieving a clinical response and endoscopic improvement. |
1. Percentuale di pazienti con risposta clinica, definita come riduzione di almeno 70 punti dello CDAI alla fine del periodo di trattamento rispetto al valore al basale; 2. Percentuale di pazienti con miglioramento del quadro endoscopico intestinale, definito come variazione di una classe (es: da moderato a lieve), di Simplified Endoscopic Activity Score for Crohn's Disease (SES-CD), 3. Percentuale di pazienti con risposta clinica e miglioramento del quadro endoscopico intestinale. |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
The primary endpoints will be evaluated at the end of the treatment period (3 months) |
Gli endpoint primari verranno valutati alla fine del periodo di trattamento (3 mesi). |
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E.5.2 | Secondary end point(s) |
1. To evaluate the effect of Rifaximin-EIR (Extended Intestinal Release; 2 x 400 mg tablet twice a day, total daily dose = 1600 mg) treatment in patients with active moderate Crohn’s disease on the expression and function of nuclear PXR and PXR metabolic and inflammatory target genes. 2. To evaluate whether there is a correlation between the induced modulation of PXR and PXR target genes and clinical response (defined as a Crohn’s Disease Activity Index - CDAI reduction of ≥ 70 points from baseline value at the end of treatment) and/or endoscopic improvement (defined as the achievement of a one-class change in SES-CD) induced by Rifaximin-EIR treatment. |
1. Valutare l’effetto del trattamento con Rifaximina-EIR sui livelli di espressione, sulla funzionalità di PXR e di geni coinvolti nel metabolismo degli xenobiotici e dell’ infiammazione. 2. Valutare la correlazione tra la variazione dei livelli di espressione genica di PXR e di geni coinvolti nel metabolismo degli xenobiotici e dell’ infiammazione e la risposta clinica (riduzione di almeno 70 punti dello CDAI rispetto al valore al basale) e/o un miglioramento del quadro endoscopico intestinale (variazione di una classe di SES-CD). |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
The secondary endpoints will be evaluated at the end of the treatment period (3 months) |
Gli endpoint secondari verranno valutati alla fine del periodo di trattamento (3 mesi). |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | No |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | No |
E.6.7 | Pharmacodynamic | Yes |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | Yes |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | No |
E.8.1.1 | Randomised | No |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | Information not present in EudraCT |
E.8.2.2 | Placebo | Information not present in EudraCT |
E.8.2.3 | Other | Information not present in EudraCT |
E.8.2.4 | Number of treatment arms in the trial | 1 |
E.8.3 |
The trial involves single site in the Member State concerned
| Yes |
E.8.4 | The trial involves multiple sites in the Member State concerned | No |
E.8.4.1 | Number of sites anticipated in Member State concerned | 1 |
E.8.5 | The trial involves multiple Member States | No |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | No |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.7 | Trial has a data monitoring committee | No |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 0 |
E.8.9.1 | In the Member State concerned months | 16 |
E.8.9.1 | In the Member State concerned days | 0 |