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Status unknownNCT04464837COLDSNAP-1Updated Jul 9, 2020

Efficacy and Safety of Cold Snare Polypectomy (CSP) of Intermediate Sized Colorectal Polyps 10-15 mm

An interventional study of Cold Snare Polypectomy of intermediate sized polyps (10-15 mm) in Colorectal Polyp and Colorectal Adenoma, sponsored by Technical University of Munich. Status unknown at 1 site in Germany. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2020-07-09.

Sponsored by Technical University of Munich · Not applicable, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Jul 2020), so the status shown — last known as Not yet recruiting — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
35
Allocation
Non-randomized
Ages
18 Years to 80 Years
Sex
All
01

Study summary

Colorectal cancer (CRC) has become the third most common malignant tumor and is the second leading cause of cancer related deaths worldwide. Adenomatous polyps of the colon are possible precursor lesions for CRC. Screening for CRC has been shown effective in preventing CRC and related deaths, especially colonoscopy and resection of adenomatous polyps. Currently, for intermediate sized polyps 5 - 20 mm hot snare polypectomy (HSP) with the use of electrocautery is conventionally used, causing relevant adverse events including haemorrhage and postpolypectomy coagulation syndrome, but is safe regarding complete resection of the polyp due to burning effect on residual tissue. On the other hand, cold snare polypectomy (CSP) has grown popularity. Absence of electrocautery makes it technically easier and most important reduces adverse events. CSP is recommended as the preferred technique for polyps \<5 mm by the European Society of Gastrointestinal Endoscopy (ESGE) guidelines. In literature, there is one multicenter trial from Japan recommending CSP for polyps 4-9 mm (average polyp size 5,4 mm) and only a few case studies for polyps 10-15 mm with inconsistent results, especially regarding the complete resection and pathological evaluation of the specimen.

In this feasibility trial, the investigators try to find out if CSP with a new designed polypectomy snare is efficient and safe in terms of complete resection (R0), pathological evaluation and adverse events.

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Conditions studied

  • Colorectal Polyp
  • Colorectal Adenoma

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Keywords

  • coldsnare polypectomy
  • hotsnare polypectomy
  • intermediate sized polyps
03

In context

Adenoma

657 studies on the registry are indexed under Adenoma; 98 are open to participants now.

This study's planned enrollment of 35 is below the median of 250 across 412 interventional studies indexed under Adenoma.

Browse Adenoma studies →

Lead sponsor

Technical University of Munich is the lead sponsor of 315 studies on the registry; 55 are open to participants now.

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

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Who can participate

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

Inclusion criteria

  • indication for colonoscopy
  • signed informed consent
  • at least one polyp of the size 10-15mm
  • American Society of Anesthesiologists-classification (ASA) I-III

Exclusion criteria

Exclusion Criteria:

  • American Society of Anesthesiologists-classification (ASA) IV-VI
  • Inflammatory bowel disease (IBD)
  • known/suspected invasive colorectal cancer
  • contraindications for polypectomy
  • emergency indication for colonoscopy
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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Single group
Masking
None (open label)
Enrollment
35 participants (estimated)

Interventions

  • DeviceCold Snare Polypectomy of intermediate sized polyps (10-15 mm)

    If an eligible polyp (10-15mm) is found, cold snare polypectomy is performed with the Olympus SnareMaster® Plus Snare

    Also known as: Olympus SnareMaster® Plus

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What researchers measure

Primary outcomes

  1. Complete Resection Rate (R0-resection)

    Complete resection rate of polyps resected by cold snare polypectomy

    Time frame: 6 month

Secondary outcomes

  1. Required additional attempts for complete resection during surgery

    Where there more than one attempts for complete resection of the polyp during surgery?

    Time frame: during surgery

  2. Incidence of immediate and delayed bleeding.

    Immediate bleeding: Bleeding \>30 seconds after snaring. Delayed bleeding: Bleeding during the next 3 weeks.

    Time frame: 3 weeks

  3. Technical Impossibility of CSP during surgery

    Necessity of changing to HSP, if CSP is technically not possible

    Time frame: during surgery

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Study locations

1 site
  • 2nd Medical Department, Klinikum rechts der Isar
    Munich, 81675, Germany
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References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 9, 2020, 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
NCT04464837
Lead sponsor
Technical University of Munich
Responsible party
Monther Bajbouj (Principal Investigator, Technical University of Munich) — Principal investigator
First posted
Jul 9, 2020
Start date
Jul 1, 2020 (estimated)
Primary completion
Jan 1, 2021 (estimated)
Completion
Jun 1, 2021 (estimated)
Last update
Jul 9, 2020

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 status unknown, as verified in Jul 2020. You cannot join it, but the record below documents what was studied.

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