- ICH GCP
- US-Register für klinische Studien
- Klinische Studie NCT00292175
NBI With Magnification for Dysplasia Detection in Ulcerative Colitis
Randomised,Controlled Trial of Narrow Band Imaging With Magnification (NBI) Versus White Light Endoscopy for Dysplasia Detection in Ulcerative Colitis Surveillance
Studienübersicht
Status
Bedingungen
Intervention / Behandlung
Detaillierte Beschreibung
Colorectal cancer is the second commonest cause of cancer death. Patients with colitis have a substantially increased risk of death from colorectal cancer which increases with lenght of time the patient has had colitis. This can be as high as a 30% chance of colorectal cancer after 30 years of colitis. Colonoscopic surveillance of colitis patients has been shown to reduce the risk of colorectal cancer and allow detection at an earlier stage, but even with meticulous examination, some precancerous lesions or cancers are missed.
Precancerous lesions in colitis are difficult to see and endoscopist have used spraying dye on the lining of the bowel (chromoendoscopy) successfully to improve detection of abnormal areas: however this is time consuming and requires extra time and equipment and despite the benefits seen in multiple studies is not widely used in routine clinical practice in the UK.
Narrow band imaging (NBI) is a technique that relies on light filters to improve contrast for the smallest blood vessels in the bowel lining which shows up precancerous areas as they have a richer vascular network. It is sometimes described as "digital chromoendoscopy" as the images produced are similar to chromoendoscopy, but it is much simpler and quicker to use. With magnification it allows assessment of the fine mucosal surface pattern (pit pattern) of lesion which allows and assessment of their likelihood of being precancerous. Autofluorescence endoscopy uses short wavelength light and light filters to produce a false colour image of the bowel lining where polyps stand out. These techniques have been used with some success in the oesophagus and stomach but little work is available for the colon.
We aim to see if NBI with magnification is better that standard colonoscopy for detecting precancerous areas. This is likely as it produces images similar to chromoendoscopy which is already shown to help. If a potentially precancerous area is found we will use other types of endoscopy, particularly NBI autofluorescence to see if these techniques are helpful for discriminating between pre-cancerous and non pre-cancerous areas
Studientyp
Einschreibung (Voraussichtlich)
Phase
- Unzutreffend
Kontakte und Standorte
Studienorte
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Nottingham, Vereinigtes Königreich, NG7 2UH
- Rekrutierung
- Nottingham Univesrity Hospitals NHS Trust, Queen's Medical Centre
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Kontakt:
- Krish Ragunath, Dr
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Hauptermittler:
- Krish Ragunath, Dr
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Middlesex
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London, Middlesex, Vereinigtes Königreich, HA1 3UJ
- Rekrutierung
- North West London Hospitals NHS Trust - St Mark's
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Kontakt:
- Alan Warnes, PhD
- Telefonnummer: 2011 0044208 869
- E-Mail: alan.warnes@nwlh.nhs.uk
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Kontakt:
- Iva Hauptmannova, BSc MA
- Telefonnummer: 5286 0044208 869
- E-Mail: iva.hauptmannova@nwlh.nhs.uk
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Hauptermittler:
- Brian Saunders, MD FRCP
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Teilnahmekriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Beschreibung
Inclusion Criteria:
- petients with colitis who meet surveillance criteria
- patients over 18 years of age
Exclusion Criteria:
- pregnant patients
- unable or unwilling to give informed consent
- patients with severe active colitis who would be unsafe to endoscope
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Diagnose
- Zuteilung: Zufällig
- Interventionsmodell: Parallele Zuordnung
- Maskierung: Keine (Offenes Etikett)
Was misst die Studie?
Primäre Ergebnismessungen
Ergebnis Maßnahme |
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Effectiveness of NBI versus Light endoscopy
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Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
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Are more precancerous lessions found in total with NBI?
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Are more advanced precancerous lesions found with NBI?
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Are more patients found with more that one precancerous lesion with NBI?
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How Many lessions are successfully completely removed via the endoscope?
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Mitarbeiter und Ermittler
Mitarbeiter
Ermittler
- Hauptermittler: Brian Saunders, MD, FRCP, London North West Healthcare NHS Trust
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Schätzen)
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Schätzen)
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Zusätzliche relevante MeSH-Bedingungen
Andere Studien-ID-Nummern
- 06/NBI2/10
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