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Sammenligning af reduktion med ESD- versus APC-TORe (CREATORe)

23. september 2026 opdateret af: Stephen Firkins

Sammenligning af resultater af klassisk transoral udløbsreduktion (TORe) versus endoskopisk submucosal dissektion-TORe: Et randomiseret kontrolleret forsøg

The goal of this clinical trial is to compare two variations of the same procedure used to assist with weight loss in patients who have a history of Roux-en-Y gastric bypass who have experienced weight regain. The procedure being studied is called the Transoral Outlet Reduction (TORe), and the trial will compare two different ways to complete the TORe procedure. The main question[s] it aims to answer are:

  • Which variation of the TORe procedure results in more weight loss?
  • Which variation of the TORe is safer? Participants who are eligible and willing to undergo the TORe procedure to assist with weight loss will have the procedure completed either one of the two ways. All other care will be exactly the same between the two groups. Researchers will compare outcomes between the two procedure variations, looking at which one results in more weight loss, is more successful, and safer.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Weight regain after having a Roux-en-Y gastric bypass is common. One of the primary reasons for weight regain after bypass is stretching out or "dilation" of the surgical connection created between what is left of the stomach and the small intestine (called the anastamosis). As the ability to suture with the help of a scope inserted through the mouth into the stomach instead of surgery, the transoral outlet reduction (TORe) was developed. The TORe involves suturing around the stretched out anastamosis, allowing it to be pulled tighter and shrink down, resulting in weight loss, and is an entirely endoscopic and reversible procedure. As the procedure advanced, "burning" of the stomach lining using a technique called argon plasma coagulation (APC), in addition to suturing, became the standard way to perform the TORe procedure. The APC helps the stomach tissue shrink even more and heal into place better, causing even more weight loss. This is now the classic way to perform the TORe (hereby called the "c-TORe"), and is now widely used to help patients who have regained weight after gastric bypass.

Multiple studies report the c-TORe results in an average of 8-9% total body weight loss. However more recently, another variation of the TORe was developed, which uses endoscopic submucosal dissection (ESD). In the ESD-TORe (hereby called the E-TORe), the physician makes a small cut in the surface layer of the anastamosis in addition to APC and suturing. In the only study comparing c-TORe to E-TORe, E-TORe resulted in significantly more weight loss. However, there are several limitations to this study that require more investigation.

This clinical trial will compare the c-TORe and the E-TORe. Patients who are eligible and willing to undergo a TORe procedure will be assigned to get either the c-TORe or the E-TORe. They will undergo the procedure with a physician experienced in both types of the procedure. Participants will be followed for one year after the procedure to compare which procedure type results in more weight loss.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

70

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ja

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • Adult patients with history of Roux-en-Y gastric bypass and weight regain
  • Dilated gastrojejunal anastamosis as diagnosed on endoscopy
  • Patients undergoing standard of care for treatment of obesity with endoscopic revisional procedure (a.k.a. TORe) who are enrolled in the GI Bariatric Endoscopy program and clinic at the study site

Exclusion Criteria:

  • Prior revision of gastric bypass
  • Active and uncontrolled gastro-esophageal reflux disease defined as ≥ grade C esophagitis
  • Active untreated Helicobacter pylori infection
  • Malignancy newly diagnosed by endoscopy
  • Upper gastro-intestinal conditions such as ulcers, polyps, gastric varices, strictures, congenital or acquired intestinal telangiectasia or other abnormalities that preclude completion of TORe
  • Presence of gastrogastric or gastroenteric fistula
  • Inability to undergo general anesthesia
  • Participating in another ongoing clinical trial of an investigational weight loss drug or device
  • Active pregnancy
  • Use of anticoagulation therapy or P2Y12 inhibitors which cannot be discontinued for the time frame surrounding the procedure
  • Insulin-dependent diabetes mellitus
  • Unwillingness to comply with standard post-TORe dietary guidelines and follow-up care
  • Any other anatomical, technical or otherwise factor that limits the ability of the endoscopist to perform either E-TORe or c-TORe
  • Any additional factor, which in the investigator's opinion, might jeopardize the subject's safety or compliance with the trial protocol

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Enkelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: E-TORe

Participants in this arm received the E-TORe procedure

The E-TORe utilizes ESD in addition to APC prior to endoscopic suturing. In this approach, a standardized solution of normal saline or hetastarch mixed with methylene blue and epinephrine is injected into the gastric rim of the GJA outlet. The mucosa is then carefully incised to expose the underlying muscular layer for a width of approximately 1cm around the GJA circumference. Following ESD, APC is then applied to the inner and outer mucosal margins of the ESD tract. Finally, endoscopic sutures are then placed in purse string fashion and cinched closed around a 6mm TTS balloon.

Andre navne:
  • ESD-TORe, endoskopisk submucosal dissektion TORe
Aktiv komparator: c-TORe

Participants in this arm received the "classical" or c-TORe procedure

The c-TORe will be completed utilizing APC prior to endoscopic suturing. In this approach, the gastric rim of the anastomosis is circumferentially ablated using APC (forced APC, flow of 0.8 L/min and power of 30-70 watts) extending an average of 1-2 cm from the outlet. Following ablation, endoscopic sutures are placed in a purse string fashion within the ablated area and the outlet cinched closed over a 6mm through-the scope (TTS) balloon.

Andre navne:
  • klassisk TORe, APC-TORe, argon plasmakoagulation TORe

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Weight change at 6 months
Tidsramme: 6 months from procedure date

Percent total body weight change 6 months following TORe procedure

6 months from procedure date
Weight change at 12 months
Tidsramme: 12 months from procedure date

Percent total body weight change 12 months following TORe procedure

12 months from procedure date

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Technical success
Tidsramme: Day of procedure

Rates of technical success of the procedure as determined by the experienced endoscopist performing the TORe procedure

Day of procedure
Procedure time
Tidsramme: Day of procedure

Mean time to complete each procedure type

Day of procedure
Adverse event rate
Tidsramme: One year from date of procedure

Rate of adverse events related to each procedure type

One year from date of procedure
5% total body weight loss
Tidsramme: One year from date of procedure

Proportion of subjects who achieved at least 5% total body weight loss

One year from date of procedure

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Efterforskere

  • Ledende efterforsker: Stephen Firkins, MD, The Cleveland Clinic

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

2. oktober 2023

Primær færdiggørelse (Anslået)

1. april 2028

Studieafslutning (Anslået)

1. april 2029

Datoer for studieregistrering

Først indsendt

9. november 2023

Først indsendt, der opfyldte QC-kriterier

9. november 2023

Først opslået (Faktiske)

14. november 2023

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

28. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

23. september 2026

Sidst verificeret

1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • 23-886

Plan for individuelle deltagerdata (IPD)

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INGEN

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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Ingen

produkt fremstillet i og eksporteret fra U.S.A.

Ja

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