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Rectal Neuroendocrine TumorTRACE-NETNCT07848360

Traction-Assisted Versus Conventional Endoscopic Submucosal Dissection for Rectal Neuroendocrine Tumors

A study testing Traction-Assisted Endoscopic Submucosal Dissection and Conventional Endoscopic Submucosal Dissection in people with Rectal Neuroendocrine Tumor, run by Pusan National University Hospital.

Not yet recruiting

Opening soon. The study is approved but enrolment has not started yet. Sites may already take enquiries.

Sites and contacts
Official record
Search all trials

Trial summary

This prospective, randomized pilot study will compare traction-assisted endoscopic submucosal dissection (T-ESD) with conventional endoscopic submucosal dissection (C-ESD) for the treatment of rectal neuroendocrine tumors. Read more about this study

Who is it for?
Ages 19 years and older
Conditions the study is for
Rectal Neuroendocrine Tumor
What is being tested?
Traction-Assisted Endoscopic Submucosal Dissection and Conventional Endoscopic Submucosal Dissection
Could I receive a placebo?
No, everyone receives an active treatment
How many people
66 participants
Where
No sites listed yet
Study dates
1 Oct 2026to 31 Dec 2027
Phase
Interventional
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 19 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Adults aged 19 years or older.
  • Patients diagnosed with or strongly suspected of having a rectal neuroendocrine tumor on colonoscopy.
  • Lesion size generally 15 mm or less, without suspected muscularis propria invasion on endoscopy and, when clinically indicated, endoscopic ultrasonography.
  • No suspected lymph node metastasis or distant metastasis based on abdominal/pelvic imaging or clinical assessment.
  • Lesions considered appropriate for endoscopic resection.
  • Ability to understand the purpose and procedures of the study and provide written informed consent.

Who cannot join

  • Suspected muscularis propria invasion, lymph node metastasis, or distant metastasis on endoscopy, endoscopic ultrasonography, imaging studies, or clinical assessment.
  • Lesion size greater than 15 mm, or a lesion considered by the investigator to require surgical treatment rather than endoscopic resection.
  • Conditions that make safe endoscopic submucosal dissection difficult, including inadequate bowel preparation.
  • Uncontrolled bleeding tendency, severe thrombocytopenia, or uncorrectable coagulation disorder.
  • Use of antiplatelet or anticoagulant therapy that cannot be appropriately discontinued or adjusted before the procedure.
  • Severe cardiopulmonary disease, hepatic failure, renal failure, or other conditions considered to make sedation or endoscopic submucosal dissection unsafe.
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  • Pregnancy or breastfeeding.
  • Inability to provide informed consent or impaired decision-making capacity.
  • Altered anatomy of the rectum due to previous rectal surgery, radiotherapy, or other conditions that may interfere with standardization of the study procedure.
  • Any other condition considered by the principal investigator or study investigator to make participation inappropriate.

Trial locations and contacts

No sites are listed yet. Contact the study team or a site near you to ask about taking part.

Seung Min Hong, M.D., Ph.D. contact

+82-51-240-7869

lucky77i@naver.com

About this study

Official title: Traction-assisted Versus Conventional Endoscopic Submucosal Dissection for Rectal Neuroendocrine Tumors: A Prospective Randomized Study

This prospective, randomized pilot study will compare traction-assisted endoscopic submucosal dissection (T-ESD) with conventional endoscopic submucosal dissection (C-ESD) for the treatment of rectal neuroendocrine tumors. Patients with rectal neuroendocrine tumors generally measuring 15 mm or less, without suspected muscularis propria invasion, lymph node metastasis, or distant metastasis, who are considered suitable for endoscopic resection will be eligible for enrollment.

Participants will be randomly assigned in a 1:1 ratio to undergo either T-ESD or C-ESD. In the T-ESD group, a traction device will be used during submucosal dissection to improve visualization of the submucosal layer, whereas conventional ESD will be performed without routine use of a traction device.

The primary outcome is resection speed, calculated as the resected specimen area divided by the submucosal dissection time. Secondary outcomes include total procedure time, submucosal dissection time, en bloc and R0 resection rates, resection margin status, procedure-related adverse events, length of hospital stay, time to diet resumption, and unplanned emergency department visits or readmissions. The study is designed as an exploratory pilot trial to estimate the efficacy, safety, and variability of traction-assisted ESD and to provide preliminary data for the design of a future larger multicenter randomized trial.

Being tested
Traction-Assisted Endoscopic Submucosal Dissection, Conventional Endoscopic Submucosal Dissection
Keywords
Rectal neuroendocrine tumor, Endoscopic submucosal dissection, Traction-assisted endoscopic submucosal dissection, Conventional endoscopic submucosal dissection

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Traction-Assisted Endoscopic Submucosal DissectionProcedure or surgery

    Also called T-ESD, TA-ESD

    After submucosal injection and mucosal incision, a standardized traction device will be applied to the lesion to provide traction and improve visualization of the submucosal layer.

  • Conventional Endoscopic Submucosal DissectionProcedure or surgery

    Also called C-ESD

    After submucosal injection, mucosal incision and submucosal dissection will be performed using conventional endoscopic submucosal dissection techniques without use of a traction device

Study groups in NCT07848360
Study groupRoleWhat they receive
Traction-Assisted Endoscopic Submucosal DissectionExperimentalParticipants assigned to this arm will undergo traction-assisted endoscopic submucosal dissection (T-ESD).
Receives: Procedure: Traction-Assisted Endoscopic Submucosal Dissection
Conventional Endoscopic Submucosal DissectionActive comparatorParticipants assigned to this arm will undergo conventional endoscopic submucosal dissection (C-ESD).
Receives: Procedure: Conventional Endoscopic Submucosal Dissection

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Resection speed

    Resection speed will be calculated as the resected specimen area (mm²) divided by the submucosal dissection time (min). The resected specimen area will be calculated using the ellipse formula: π × (major axis/2) × (minor axis/2). Submucosal dissection time will be measured from the start of submucosal dissection to complete resection of the lesion. The outcome will be expressed as mm²/min.

    Measured: During the ESD procedure, from the start of submucosal dissection to complete lesion resection

Secondary outcomes (13)
  1. Total Procedure Time

    Total procedure time will be measured from the start of the initial lesion marking to complete resection of the lesion and will be expressed in minutes.

    Measured: At completion of the ESD procedure

  2. Submucosal Dissection Time

    Submucosal dissection time will be measured from the start of submucosal dissection to complete resection of the lesion and will be expressed in minutes.

    Measured: During the ESD procedure

  3. Traction Application Time

    Time during which the traction device is applied during the ESD procedure in participants assigned to the traction-assisted ESD group, expressed in minutes.

    Measured: During the ESD procedure

  4. En Bloc Resection Rate

    The proportion of participants in whom the target lesion is resected in a single piece.

    Measured: At completion of the ESD procedure

  5. R0 Resection Rate

    The proportion of participants with histologically complete resection, defined as both negative horizontal and negative vertical resection margins.

    Measured: Postprocedurally, generally within 1 month after ESD

  6. Horizontal Resection Margin Status

    The proportion of participants with a histologically negative horizontal resection margin.

    Measured: Postprocedurally, generally within 1 month after ESD

  7. Vertical Resection Margin Status

    The proportion of participants with a histologically negative vertical resection margin.

    Measured: Postprocedurally, generally within 1 month after ESD

  8. Horizontal Resection Margin Distance

    The shortest histopathologic distance from the lateral tumor edge to the horizontal resection margin will be measured in millimeters on the resected specimen.

    Measured: Postprocedurally, generally within 1 month after ESD

  9. Vertical Resection Margin Distance

    The shortest histopathologic distance from the deepest tumor edge to the vertical resection margin will be measured in millimeters on the resected specimen.

    Measured: Postprocedurally, generally within 1 month after ESD

  10. Procedure-Related Adverse Events

    The incidence of procedure-related adverse events, including intraprocedural bleeding, delayed bleeding, intraprocedural perforation, delayed perforation, muscularis propria injury, post-ESD coagulation syndrome, and the need for additional endoscopic or surgical treatment.

    Measured: From the start of ESD through 1 month after the procedure

  11. Length of Hospital Stay

    Length of hospital stay after the ESD procedure, measured in days.

    Measured: Periprocedural

  12. Time to Diet Resumption

    Time from completion of the ESD procedure to resumption of oral diet.

    Measured: Periprocedural

  13. Unplanned Emergency Department Visit or Readmission

    The proportion of participants who experience an unplanned emergency department visit or hospital readmission after the ESD procedure.

    Measured: From the start of ESD through 1 month after the procedure

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted30 Sep 2026
  2. Study start1 Oct 2026 (estimated)
  3. Primary completion30 Nov 2027 (estimated)
  4. Study completion31 Dec 2027 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Outcomes assessor
Enrolment
66 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07848360
Sponsor's protocol ID
2607-035-165
Other IDs
2607-035-165
Acronym
TRACE-NET
Status last verified
Sep 2026
First submitted
18 Sep 2026
Last updated
30 Sep 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Yes: De-identified individual participant data underlying the results reported in the primary publication may be shared upon reasonable request. Shared data may include participant characteristics, lesion characteristics, procedural variables, histopathologic outcomes, safety outcomes, and clinical course variables collected in this study.

Publications

  • Ferlitsch M, Moss A, Hassan C, Bhandari P, Dumonceau JM, Paspatis G, Jover R, Langner C, Bronzwaer M, Nalankilli K, Fockens P, Hazzan R, Gralnek IM, Gschwantler M, Waldmann E, Jeschek P, Penz D, Heresbach D, Moons L, Lemmers A, Paraskeva K, Pohl J, Ponchon T, Regula J, Repici A, Rutter MD, Burgess NG, Bourke MJ. Colorectal polypectomy and endoscopic mucosal resection (EMR): European Society of Gastrointestinal Endoscopy (ESGE) Clinical Guideline. Endoscopy. 2017 Mar;49(3):270-297. doi: 10.1055/s-0043-102569. Epub 2017 Feb 17.

    PubMed 28212588
  • Tanaka S, Kashida H, Saito Y, Yahagi N, Yamano H, Saito S, Hisabe T, Yao T, Watanabe M, Yoshida M, Saitoh Y, Tsuruta O, Sugihara KI, Igarashi M, Toyonaga T, Ajioka Y, Kusunoki M, Koike K, Fujimoto K, Tajiri H. Japan Gastroenterological Endoscopy Society guidelines for colorectal endoscopic submucosal dissection/endoscopic mucosal resection. Dig Endosc. 2020 Jan;32(2):219-239. doi: 10.1111/den.13545. Epub 2019 Dec 27.

    PubMed 31566804
  • Ramage JK, De Herder WW, Delle Fave G, Ferolla P, Ferone D, Ito T, Ruszniewski P, Sundin A, Weber W, Zheng-Pei Z, Taal B, Pascher A; Vienna Consensus Conference participants. ENETS Consensus Guidelines Update for Colorectal Neuroendocrine Neoplasms. Neuroendocrinology. 2016;103(2):139-43. doi: 10.1159/000443166. Epub 2016 Jan 5. No abstract available.

    PubMed 26730835
  • Pimentel-Nunes P, Libanio D, Bastiaansen BAJ, Bhandari P, Bisschops R, Bourke MJ, Esposito G, Lemmers A, Maselli R, Messmann H, Pech O, Pioche M, Vieth M, Weusten BLAM, van Hooft JE, Deprez PH, Dinis-Ribeiro M. Endoscopic submucosal dissection for superficial gastrointestinal lesions: European Society of Gastrointestinal Endoscopy (ESGE) Guideline - Update 2022. Endoscopy. 2022 Jun;54(6):591-622. doi: 10.1055/a-1811-7025. Epub 2022 May 6.

    PubMed 35523224
  • Rinke A, Ambrosini V, Dromain C, Garcia-Carbonero R, Haji A, Koumarianou A, van Dijkum EN, O'Toole D, Rindi G, Scoazec JY, Ramage J. European Neuroendocrine Tumor Society (ENETS) 2023 guidance paper for colorectal neuroendocrine tumours. J Neuroendocrinol. 2023 Jun;35(6):e13309. doi: 10.1111/jne.13309. Epub 2023 Jun 22.

    PubMed 37345509
  • Wu S, Zhou Y, Ji D, Cai X, Shen L, Yu X, Xia J, Zhu M, Zhao X, Shi Y, Ning M, Wan XJ, Dong ZX. Traction-assisted endoscopic submucosal resection (TA-ESD) for rectal neuroendocrine tumors: a randomized multi-center trial. Surg Endosc. 2025 Aug;39(8):5430-5438. doi: 10.1007/s00464-025-11934-8. Epub 2025 Jul 9.

    PubMed 40634728
  • Peng J, Lin J, Fang L, Zhou J, Song Y, Yang C, Zhang Y, Gu B, Ji Z, Lu Y, Mao X, Yan L. Conventional versus rubber band traction-assisted endoscopic submucosal dissection for rectal neuroendocrine tumors: a single-center retrospective study (with video). Surg Endosc. 2024 Nov;38(11):6485-6492. doi: 10.1007/s00464-024-11244-5. Epub 2024 Sep 13.

    PubMed 39271513
  • Ichijima R, Ikehara H, Sumida Y, Inada T, Nemoto D, Nakajima Y, Minagawa T, Sumiyoshi T, Inoki K, Yoshida N, Inoue K, Fukuzawa M, Minoda Y, Tsutsumi K, Esaki M, Gotoda T. Randomized controlled trial comparing conventional and traction endoscopic submucosal dissection for early colon tumor (CONNECT-C trial). Dig Endosc. 2023 Jan;35(1):86-93. doi: 10.1111/den.14426. Epub 2022 Oct 3.

    PubMed 35997037
  • Tamaru Y, Kuwai T, Miyakawa A, Kanazawa N, Kusunoki R, Shimura H, Uchiyama S, Ishaq S, Kohno H. Efficacy of a Traction Device for Endoscopic Submucosal Dissection Using a Scissor-Type Knife: A Randomized Controlled Trial. Am J Gastroenterol. 2022 Nov 1;117(11):1797-1804. doi: 10.14309/ajg.0000000000002019. Epub 2022 Sep 26.

    PubMed 36191269
  • Yamasaki Y, Takeuchi Y, Uedo N, Kato M, Hamada K, Aoi K, Tonai Y, Matsuura N, Kanesaka T, Yamashina T, Akasaka T, Hanaoka N, Higashino K, Ishihara R, Iishi H. Traction-assisted colonic endoscopic submucosal dissection using clip and line: a feasibility study. Endosc Int Open. 2016 Jan;4(1):E51-5. doi: 10.1055/s-0041-107779. Epub 2015 Nov 30.

    PubMed 26793785
  • Fuccio L, Hassan C, Ponchon T, Mandolesi D, Farioli A, Cucchetti A, Frazzoni L, Bhandari P, Bellisario C, Bazzoli F, Repici A. Clinical outcomes after endoscopic submucosal dissection for colorectal neoplasia: a systematic review and meta-analysis. Gastrointest Endosc. 2017 Jul;86(1):74-86.e17. doi: 10.1016/j.gie.2017.02.024. Epub 2017 Feb 28.

    PubMed 28254526
  • Belderbos TD, Leenders M, Moons LM, Siersema PD. Local recurrence after endoscopic mucosal resection of nonpedunculated colorectal lesions: systematic review and meta-analysis. Endoscopy. 2014 May;46(5):388-402. doi: 10.1055/s-0034-1364970. Epub 2014 Mar 26.

    PubMed 24671869

Questions about this trial

What is this clinical trial studying?

A study testing Traction-Assisted Endoscopic Submucosal Dissection and Conventional Endoscopic Submucosal Dissection in people with Rectal Neuroendocrine Tumor, run by Pusan National University Hospital.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 6 inclusion and 10 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: opening soon, as of the sponsor's last update on 30 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Seung Min Hong, M.D., Ph.D. (+82-51-240-7869, lucky77i@naver.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Resection speed (time frame: During the ESD procedure, from the start of submucosal dissection to complete lesion resection). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT07848360, which also lists 12 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 30 Sep 2026.

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