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WithdrawnNCT00475592Updated Jul 24, 2017

Validation of Esophageal Variceal Grading: A Comparative Study of Upper Gastrointestinal (GI) Endoscopy and Capsule Endoscopy

An interventional study of Esophageal Capsule Endoscopy and Upper Gastrointestinal Endoscopy in Esophageal and Gastric Varices, sponsored by Johns Hopkins University. Withdrawn at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2017-07-24.

Sponsored by Johns Hopkins University · Not applicable, Interventional, and Diagnostic

Why this study was withdrawn
study failed to recruit

From the registry’s dates

  • Registered 4 months after the study started (first participant enrolled Jan 2007, registered May 2007).
Phase
Not applicable
Study type
Interventional
Enrollment
0
Allocation
Non-randomized
Ages
18 Years and older
Sex
All
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Study summary

The purpose of this study is to develop a grading system for esophageal varices using capsule endoscopy in patients with portal hypertension and cirrhosis.

Read the detailed description

Up to 35% of patients with cirrhosis will develop esophageal varices, which carry with them a 1-year and 3-year bleeding rate of 33% and 41%, respectively. Screening for varices with a video endoscopy is limited by its cost, patient compliance, and the risks of sedating a patient with portal hypertension. Capsule endoscopy is a novel method that may reduce the costs and increase compliance for screening.

The investigators propose to screen 100 consecutive patients with advanced cirrhosis for esophageal varices. A capsule endoscopy and video endoscopy will be done on the same day. The varices seen on video endoscopy will be graded using a standard grading scale. Both capsule and video endoscopy images will be assessed in a blinded fashion by 4 independent investigators. Finally, the video endoscopic images will be compared to capsule endoscopy to develop a capsule endoscopy grading system that corresponds to video endoscopy.

The primary endpoint of the study will be to develop a grading system for esophageal varices using capsule endoscopy. Secondary endpoints of the study include sensitivity, specificity, inter- and intraobserver variation of variceal grading using capsule endoscopy; patient acceptance as assessed on a visual analogue scale; and a cost comparison (facility fees + professional fees) of the two screening methods.

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Conditions studied

  • Esophageal and Gastric Varices

Keywords

  • Esophageal Varices
  • Gastric Varices
  • Capsule Endoscopy
  • Portal Hypertension
  • Cirrhosis
  • Gastrointestinal Hemorrhage
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In context

Esophageal and Gastric Varices

169 studies on the registry are indexed under Esophageal and Gastric Varices; 41 are open to participants now.

Browse Esophageal and Gastric Varices studies →

Lead sponsor

Johns Hopkins University is the lead sponsor of 1,783 studies on the registry; 313 are open to participants now.

Of its 203 completed or terminated interventional studies of FDA-regulated products, 140 (69%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Advanced cirrhosis with portal hypertension based on imaging, clinical suspicion, or liver biopsy
  • Age greater than or equal to 18 years old
  • Able to give consent

Exclusion criteria

Exclusion Criteria:

  • Current implantable cardioverter-defibrillators or pacemaker in place
  • Suspected intestinal obstruction
  • Esophageal swallowing disorder
  • Esophageal stenosis
  • Age less than 18 years old
  • Pregnancy
  • Known Zenker's diverticulum
  • Patients with previous endoscopic or surgical esophageal treatment
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Study design

Phase
Not applicable
Primary purpose
Diagnostic
Allocation
Non-randomized
Intervention model
Single group
Masking
None (open label)
Enrollment
0 participants (actual)

Study arms

  • Experimental
    Capsule Endoscopy

    Device: Esophageal Capsule Endoscopy

  • Active comparator
    Upper Gastrointestinal Endoscopy

    Device: Upper Gastrointestinal Endoscopy

Interventions

  • DeviceEsophageal Capsule Endoscopy
  • DeviceUpper Gastrointestinal Endoscopy
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What researchers measure

Primary outcomes

  1. The primary endpoint of the study will be to develop a grading system for esophageal varices using capsule endoscopy.

    Time frame: Two years

Secondary outcomes

  1. Secondary endpoints include sensitivity, specificity, inter- and intraobserver variation of variceal grading using capsule endoscopy; patient acceptance; and a cost comparison (facility + professional fees) of the two screening methods.

    Time frame: Two years

07

Study locations

1 site
  • Johns Hopkins Hospital
    Baltimore, Maryland 21205, United States
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References and documents

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 24, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT00475592
Lead sponsor
Johns Hopkins University
Collaborators
Ethicon, Inc.
Responsible party
Sponsor
First posted
May 21, 2007
Start date
Jan 2007
Primary completion
May 2008
Completion
May 2008
Last update
Jul 24, 2017

Study contacts

Paul J Thuluvath, MD
principal investigator · Johns Hopkins University

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is withdrawn, as verified in Jul 2017. You cannot join it, but the record below documents what was studied.

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