ClinicalTrials.gg
Status unknownNCT04915833Updated Mar 31, 2022

Computer-aided Detection During Screening Colonoscopy (Experts)

An interventional study of Standard high-definition colonoscopy and Colonoscopy with real-time AI assisted automated polyp detection in Colorectal Neoplasms, Colon Polyp and Colon Adenoma, sponsored by Instituto Ecuatoriano de Enfermedades Digestivas. Status unknown at 1 site in Ecuador. Open to participants aged 45 Years to 80 Years. Per ClinicalTrials.gov, last updated 2022-03-31.

Sponsored by Instituto Ecuatoriano de Enfermedades Digestivas · Not applicable, Interventional, and Diagnostic

The sponsor has not verified this record recently (last verified Mar 2022), so the status shown — last known as Recruiting — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
209
Allocation
Not applicable
Ages
45 Years to 80 Years
Sex
All
01

Study summary

Evaluation of the colonic mucosa with a high definition colonoscope (EPKi7010 video processor).

The endoscopy images will be seen on a 27inch, flat-panel, high-definition LCD monitor (Radiance™ ultraSC-WU27-G1520 model) only by one expert endoscopist, randomly assigned.

The number, location, and polyps' features (Paris classification) will be recorded by the operator. If a polyp is detected, the endoscopist will remove the polyp endoscopically with a cold snare.

The same patient will be submitted to a second, the same session, computed aided real-time colonoscopy using the DISCOVERY, AI-assisted polyp detector. Colonoscopy will be performed by a same-level-of-expertise operator in comparison to the initial procedure. Any polyp or lesion detected with the AI system will be recorded and endoscopically removed and considered as a missed lesion from standard colonoscopy.

Read the detailed description

Screening colonoscopy has decreased the incidence of colorectal carcinoma in the previous decades. However, there are reports of missed polyps and interval CRC following screening colonoscopy. Several factors may affect the ADR, PDR, and missed lesions rates, such as bowel preparation, percentage of mucosal surface evaluation, and the training levels of operators.

Artificial intelligence using deep-learning algorithms has been implemented in gastrointestinal endoscopy, mainly for the detection and diagnosis of GI tract lesions such as colonic polyps and adenomas. The implementation of automated polyp detection software during screening colonoscopy may prevent the missing of polyp and adenoma during screening colonoscopy. Therefore, improving the ADR and PDR during colonoscopies. All of this, with the aim of decrease the incidence of interval colorectal carcinoma (CRC), and CRC-related morbidity and mortality.

The Discovery Artificial Intelligence assisted polyp detector (Pentax Medical, Hoya Group) was recently launched for clinical practice. This AI software was trained with 120,000 files from approximately 300 clinical cases. The visual aided detection (bounding box locating a polyp on the monitor) will alert the endoscopist if a polyp/adenoma was missed during the standard, screening procedure.

To the best of our knowledge, this may be the first study evaluating the Discovery AI-assisted polyp detector on clinical practice in the western hemisphere. The investigators aim to evaluate the real-world effectiveness of AI-assisted colonoscopy in clinical practice. The investigators will also evaluate the role of endoscopists' levels of training in the ADR, PDR, and missed lesion rate.

02

Conditions studied

  • Colorectal Neoplasms
  • Colon Polyp
  • Colon Adenoma

Keywords

  • colonoscopy
  • colorectal cancer
03

In context

Colorectal Neoplasms

5,734 studies on the registry are indexed under Colorectal Neoplasms; 1,481 are open to participants now.

This study's planned enrollment of 209 is above the median of 77 across 4,222 interventional studies indexed under Colorectal Neoplasms.

Browse Colorectal Neoplasms studies →

Lead sponsor

Instituto Ecuatoriano de Enfermedades Digestivas is the lead sponsor of 39 studies on the registry; 10 are open to participants now.

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

04

Who can participate

Ages eligible
45 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Provided informed written consent
  • Age greater than 45 years of age
  • Adequate Bowel preparation

Exclusion criteria

Exclusion Criteria:

  • History of inflammatory bowel disease, familial polyposis syndrome
  • History of colorectal carcinoma, colorectal surgery
  • History of uncontrolled coagulopathy
  • History of previously failed attempt colonoscopy
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Study design

Phase
Not applicable
Primary purpose
Diagnostic
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
209 participants (estimated)

Study arms

  • Experimental
    Patients for CRC screening and diagnostic colonoscopy

    Consecutive patients \>45 years of age submitted for diagnostic colonoscopy

    Diagnostic Test: Standard high-definition colonoscopy · Diagnostic Test: Colonoscopy with real-time AI assisted automated polyp detection

Interventions

  • Diagnostic testStandard high-definition colonoscopy

    Evaluation of the colonic mucosa with a high definition colonoscope (EPKi7010 video processor). The endoscopy images will be seen on a 27inch, flat panel, high-definition LCD monitor (Radiance™ ultraSC-WU27-G1520 model) only by one expert endoscopist, randomly assigned. The number, location and polyps' features (Paris classification) will be recorded by the operator. If a polyp is detected, the endoscopist will remove the polyp endoscopically with a cold snare and forceps biopsy.

  • Diagnostic testColonoscopy with real-time AI assisted automated polyp detection

    The same patient will be submitted to a second, same session, computed aided real-time colonoscopy using the DISCOVERY, AI assisted polyp detector. Colonoscopy will be performed by a same-level-of-expertise operator in comparison to the initial procedure. Any polyp or lesion detected with the AI system will be recorded and endoscopically removed and considered as a missed lesion from standard colonoscopy.

06

What researchers measure

Primary outcomes

  1. Adenoma detection rate of computer-aided after standard colonoscopy.

    Number of examinations with at least one adenoma detected during colonoscopy while using the AI-based model

    Time frame: 30 days

  2. Polyp detection rate of computer-aided following standard colonoscopy.

    Number of examination with at least one polyp detected while using the AI-based model

    Time frame: 30 days

Secondary outcomes

  1. Polyp miss rate of standard high-definition colonoscopy.

    Total number of missed polyps/ (total number of missed polyps + total number of polyps on initial examination)

    Time frame: 30 days

  2. Adenoma miss rate of standard high-definition colonoscopy.

    Total number of missed adenomas/ (total number of missed adenomas + total number of adenomas on initial examination)

    Time frame: 30 days

07

Study locations

1 of 1 sites recruiting
  • Ecuadorian Institute of Digestive Diseases
    Guayaquil, Guayas 090505, Ecuador
    • Carlos A Robles-Medranda, MD · Contact · carlosoakm@yahoo.es · +593989158865
    • Carlos A Robles-Medranda, MD · Principal investigator
    • Roberto A Oleas, MD · Sub investigator
    • Martha G Arevalo-Mora, MD · Sub investigator
    • Daniel Calle, MD · Sub investigator
    • Miguel A Puga-Tejada, MD · Sub investigator
    Recruiting
08

References and documents

Publications

  • Wang P, Berzin TM, Glissen Brown JR, Bharadwaj S, Becq A, Xiao X, Liu P, Li L, Song Y, Zhang D, Li Y, Xu G, Tu M, Liu X. Real-time automatic detection system increases colonoscopic polyp and adenoma detection rates: a prospective randomised controlled study. Gut. 2019 Oct;68(10):1813-1819. doi: 10.1136/gutjnl-2018-317500. Epub 2019 Feb 27. PubMed 30814121 ↗
  • Vinsard DG, Mori Y, Misawa M, Kudo SE, Rastogi A, Bagci U, Rex DK, Wallace MB. Quality assurance of computer-aided detection and diagnosis in colonoscopy. Gastrointest Endosc. 2019 Jul;90(1):55-63. doi: 10.1016/j.gie.2019.03.019. Epub 2019 Mar 26. PubMed 30926431 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 31, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04915833
Lead sponsor
Instituto Ecuatoriano de Enfermedades Digestivas
Responsible party
Sponsor
First posted
Jun 7, 2021
Start date
Apr 26, 2021
Primary completion
Apr 30, 2022 (estimated)
Completion
Jun 28, 2022 (estimated)
Last update
Mar 31, 2022

Study contacts

Carlos Robles-Medranda, MD
Contact
carlosoakm@yahoo.es
+59342109180
Carlos Robles-Medranda, MD FASGE
principal investigator · Ecuadorian Institute of Digestive Diseases

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is status unknown, as verified in Mar 2022. You cannot join it, but the record below documents what was studied.

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