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CompletedNCT04350840Updated Mar 2, 2022

Seoul National University Hospital Gangnam-Real Time Optical Diagnosis Program 2: Gangnam-READI2

An interventional study of feedback in Colon Polyp, sponsored by Seoul National University Hospital. Completed at 1 site in Korea, Republic of. Per ClinicalTrials.gov, last updated 2022-03-02.

Sponsored by Seoul National University Hospital · Not applicable, Interventional, and Diagnostic

Phase
Not applicable
Study type
Interventional
Enrollment
8
Allocation
Not applicable
Sex
All
01

Study summary

Accurate optical diagnosis of colorectal polyps could allow a "resect and discard" strategy based on the results of the optical biopsy. Even though intensive training for optical diagnosis, there is still wide variability in individual endoscopists to meet the PIVI thresholds. The investigators with experience of prior optical diagnosis training perform new education and drill to apply proper high confidence according to their decision time. After the education program, the investigators prospectively evaluate real-time optical biopsy analysis of polyps in 8 academic gastroenterologists.

Read the detailed description

This study is an extension of the Gangnam-READI program (NCT02516748) in Seoul National University Hospital Healthcare System Gangnam Center. This study is composed of two periods. First, an education program on predicting polyp histology and real-time optical diagnosis will be performed by 8 endoscopists From February to March 2020. In the second period from April 2020 till October 2020(total 6 months), real-time optical diagnosis with time drill for diminutive and small colorectal polyps will be activated. Endoscopists will have 3 seconds rule to make high confidence diagnosis and have feedbacks on their accuracy of optical diagnosis for polyps per 3 months. The performance will be evaluated by comparing the optically predicted diagnosis with the actual histologic diagnosis. Negative predictive value for the prediction of non-neoplastic polyp and concordance of surveillance intervals for diminutive polyps diagnosed optically with high confidence will be measured. In addition, the characteristics of the endoscopist affecting the performance of optical diagnosis were investigated.

02

Conditions studied

  • Colon Polyp
03

In context

Polyps

385 studies on the registry are indexed under Polyps; 59 are open to participants now.

This study's enrollment of 8 is below the median of 160 across 250 interventional studies indexed under Polyps.

Browse Polyps studies →

Lead sponsor

Seoul National University Hospital is the lead sponsor of 1,860 studies on the registry; 275 are open to participants now.

Of its 12 completed or terminated interventional studies of FDA-regulated products, 2 (17%) have results posted.

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

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  1. Board-certified gastroenterologists
  2. Endoscopists who finished ex-vivo optical diagnosis training

Exclusion criteria

Exclusion Criteria:

  1. Inflammatory bowel disease
  2. Previous colon cancer history
  3. Previous colon op. history
  4. Melanosis coli
05

Study design

Phase
Not applicable
Primary purpose
Diagnostic
Allocation
Not applicable
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
8 participants (actual)

Study arms

  • Experimental
    Feedback

    Participating endoscopists will make high confidence diagnosis according to their judgment time

    Behavioral: feedback

Interventions

  • Behavioralfeedback

    feedback of optical diagnosis performance per 3 month

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What researchers measure

Primary outcomes

  1. PIVI threshold

    Negative predictive value for the prediction of nonneoplastic polyp and concordance of surveillance intervals for diminutive polyps diagnosed optically with high confidence

    Time frame: 12 months

07

Study locations

1 site
  • Healthcare System Gangnam Center, Seoul National University Hospital
    Seoul, Korea, Republic of
08

References and documents

Publications

  • Bae JH, Lee C, Kang HY, Kwak MS, Doo EY, Seo JY, Song JH, Yang SY, Yang JI, Lim SH, Yim JY, Lim JH, Chung GE, Chung SJ, Jin EH, Park B, Kim JS. Improved Real-Time Optical Diagnosis of Colorectal Polyps Following a Comprehensive Training Program. Clin Gastroenterol Hepatol. 2019 Nov;17(12):2479-2488.e4. doi: 10.1016/j.cgh.2019.02.019. Epub 2019 Feb 14. PubMed 30772588 ↗

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 2, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04350840
Lead sponsor
Seoul National University Hospital
Responsible party
Su Jin Chung (Professor, Seoul National University Hospital) — Principal investigator
First posted
Apr 17, 2020
Start date
Feb 1, 2020
Primary completion
Oct 31, 2020
Completion
Dec 31, 2020
Last update
Mar 2, 2022

Oversight

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

Not currently enrolling

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

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