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Cyanoacrylate Glue Versus Absorbable Gelatin Sponge for Gastric Varices (CoAGS-GV)

9. července 2026 aktualizováno: Sunil Gupta, Unity Health Toronto

Cyanoacrylate Glue Versus Absorbable Gelatin Sponge for Endoscopic Treatment of Gastric Varices (CoAGS-GV): A Randomized, Patient- and Assessor-Blinded, Non-Inferiority Trial

This study compares two endoscopic ultrasound-guided treatments for gastric varices, which are enlarged veins in the stomach that can bleed. Both treatments use small coils placed into the varix. One group will receive coils with cyanoacrylate medical glue, and the other group will receive coils with absorbable gelatin sponge.

The purpose of the study is to determine whether absorbable gelatin sponge with coils is not worse than cyanoacrylate glue with coils for closing off gastric varices, and to compare safety outcomes. Participants will be randomly assigned to one of the two treatment groups. Participants and outcome assessors will not know which treatment was used, but the doctor performing the procedure will know.

After the procedure, participants will be followed for up to 12 months. Follow-up may include clinical assessments, questionnaires about health and quality of life, CT imaging shortly after the procedure, and repeat endoscopic ultrasound assessments to evaluate whether the gastric varix has been successfully treated.

Přehled studie

Postavení

Zatím nenabíráme

Podmínky

Intervence / Léčba

Detailní popis

Gastric varices are enlarged veins in the stomach that occur in patients with portal hypertension and can cause serious bleeding. Endoscopic ultrasound-guided therapy allows direct visualization of the target varix, placement of embolization coils, delivery of an embolic material, and Doppler assessment of blood flow after treatment.

Cyanoacrylate glue combined with coils is an established treatment approach for gastric varices. However, glue injection can be technically challenging and may be associated with complications such as embolization or equipment-related issues. Absorbable gelatin sponge, delivered as a slurry with coils, is an alternative approach that is used in clinical care and may avoid some of the practical limitations of glue. Comparative randomized data between these approaches are limited.

This is a randomized, patient- and assessor-blinded, non-inferiority trial comparing endoscopic ultrasound-guided coil embolization with cyanoacrylate glue versus endoscopic ultrasound-guided coil embolization with absorbable gelatin sponge for the treatment of gastric varices. Eligible participants will be randomized in a 1:1 ratio after confirmation of eligibility and informed consent. Randomization will occur intra-procedurally before treatment.

Participants assigned to the cyanoacrylate group will undergo endoscopic ultrasound-guided coil deployment followed by injection of cyanoacrylate glue mixed with Lipiodol. Participants assigned to the absorbable gelatin sponge group will undergo endoscopic ultrasound-guided coil deployment followed by injection of absorbable gelatin sponge slurry. In both groups, Doppler assessment will be used to evaluate blood flow in the target varix after treatment. Repeat coil and/or embolic material injection may be performed at the discretion of the treating endoscopist.

Participants will be monitored after the procedure for complications, including bleeding and embolization. Follow-up includes CT imaging approximately 48 hours after the procedure, clinical and questionnaire-based follow-up at 1, 3, 6, and 12 months, and repeat endoscopic assessment with endoscopic ultrasound at approximately 3 months and 12 months. The primary endpoint is complete obliteration of the target gastric varix, assessed by absence of Doppler flow on follow-up endoscopic ultrasound at 3 months. Secondary and tertiary outcomes include immediate technical success, clinical success, rebleeding, adverse events, hospital admission, ICU admission, transfusion requirements, reintervention, length of stay, procedural technical difficulty, costs, and health-related quality of life.

Typ studie

Intervenční

Zápis (Odhadovaný)

64

Fáze

  • Nelze použít

Kontakty a umístění

Tato část poskytuje kontaktní údaje pro ty, kteří studii provádějí, a informace o tom, kde se tato studie provádí.

Studijní kontakt

Studijní záloha kontaktů

Studijní místa

    • Ontario
      • Toronto, Ontario, Kanada, M5B 1W8
        • St. Michael's Hospital - Unity Health Toronto
        • Kontakt:
        • Kontakt:
        • Vrchní vyšetřovatel:
          • Sunil Gupta, MD, PhD

Kritéria účasti

Výzkumníci hledají lidi, kteří odpovídají určitému popisu, kterému se říká kritéria způsobilosti. Některé příklady těchto kritérií jsou celkový zdravotní stav osoby nebo předchozí léčba.

Kritéria způsobilosti

Věk způsobilý ke studiu

  • Dospělý
  • Starší dospělý

Přijímá zdravé dobrovolníky

Ne

Popis

Inclusion Criteria:

  • Adults aged 18 years or older.
  • Gastric varices deemed suitable for EUS-guided endoscopic treatment.
  • History of suspected gastric variceal bleeding or active gastric variceal bleeding, with treatment intended for secondary prophylaxis.
  • Ability to provide informed consent directly or through a substitute decision maker.
  • Willingness and ability to undergo clinical follow-up, EUS assessment, and CT imaging.

Exclusion Criteria:

  • Inability or unwillingness to provide informed consent directly or through a substitute decision maker.
  • No gastric varix present, or gastric varix too small or not amenable to combination therapy.
  • Contraindication to therapeutic EUS or endoscopy.
  • Contraindication to any study material used in the assigned treatment arm.
  • Contraindication to contrast-enhanced CT, if not clinically manageable.
  • Inability to complete planned follow-up.
  • Pregnancy.
  • Any clinical situation in which the treating endoscopist determines that randomization would be unsafe or inappropriate.

Studijní plán

Tato část poskytuje podrobnosti o studijním plánu, včetně toho, jak je studie navržena a co studie měří.

Jak je studie koncipována?

Detaily designu

  • Primární účel: Léčba
  • Přidělení: Randomizované
  • Intervenční model: Paralelní přiřazení
  • Maskování: Dvojnásobek

Zbraně a zásahy

Skupina účastníků / Arm
Intervence / Léčba
Aktivní komparátor: Cyanoacrylate Glue + Lipiodol + Coil
Participants randomized to this arm will undergo endoscopic ultrasound-guided treatment of the target gastric varix using coil deployment followed by injection of cyanoacrylate glue mixed with Lipiodol. Repeat coil and/or glue injection may be performed at the discretion of the treating endoscopist. Doppler assessment will be performed to assess eradication of flow in the treated gastric varix.
Endoscopic ultrasound-guided treatment of a gastric varix using coil deployment followed by injection of cyanoacrylate glue mixed with Lipiodol under direct visualization. The injection is flushed with sterile water. Repeat coil and/or glue injection may be performed at the discretion of the treating endoscopist. Doppler assessment is performed to assess eradication of flow in the treated gastric varix.
Ostatní jména:
  • Glue + Lipiodol + Coil; Cyanoacrylate Glue; Glubran2
Experimentální: Absorbable Gelatin Sponge + Coil
Participants randomized to this arm will undergo endoscopic ultrasound-guided treatment of the target gastric varix using coil deployment followed by injection of absorbable gelatin sponge slurry. Repeat coil and/or absorbable gelatin sponge injection may be performed at the discretion of the treating endoscopist. Doppler assessment will be performed to assess eradication of flow in the treated gastric varix.
Endoscopic ultrasound-guided treatment of a gastric varix using coil deployment followed by injection of absorbable gelatin sponge slurry under direct visualization. The slurry is flushed with sterile water. Repeat coil and/or absorbable gelatin sponge injection may be performed at the discretion of the treating endoscopist. Doppler assessment is performed to assess eradication of flow in the treated gastric varix.
Ostatní jména:
  • Gelfoam + Coil; Absorbable Gelatin Sponge; Gelfoam Slurry

Co je měření studie?

Primární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Complete Obliteration of the Target Gastric Varix on EUS
Časové okno: 3 months post-intervention
Proportion of participants with complete obliteration of the target gastric varix, defined as cessation or absence of Doppler flow within the target varix on follow-up endoscopic ultrasound.
3 months post-intervention

Sekundární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Immediate Technical Success
Časové okno: During index procedure
Successful EUS-guided deployment of coil and assigned embolic material into the gastric varix with cessation of Doppler flow at the end of the procedure.
During index procedure
Short-Term Clinical Success
Časové okno: Up to 3 months post-intervention
Cessation of bleeding if present at baseline and/or absence of recurrent gastric variceal bleeding after the intervention.
Up to 3 months post-intervention
Procedure-Related Adverse Events
Časové okno: From index procedure through 12 months
Rate and severity of procedure-related adverse events, categorized according to the ASGE Lexicon for endoscopic adverse events.
From index procedure through 12 months
Long-Term Technical Success
Časové okno: 12 months post-intervention
Complete obliteration of the treated gastric varix on repeat EUS, defined as absence of Doppler flow in the treated target varix.
12 months post-intervention
Long-Term Clinical Success
Časové okno: Up to 12 months post-intervention
Absence of recurrent gastric variceal bleeding and assessment of clinical durability after the intervention.
Up to 12 months post-intervention

Další výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Transfusion Requirements
Časové okno: From index procedure through 12 months
Number of blood product transfusions required after the intervention.
From index procedure through 12 months
Rebleeding
Časové okno: From index procedure through 12 months
Occurrence of recurrent gastric variceal bleeding after the index intervention.
From index procedure through 12 months
Hospital Length of Stay
Časové okno: From index admission up to 30 days
Length of hospital stay associated with the index presentation and intervention.
From index admission up to 30 days
ICU Admission
Časové okno: From index procedure through 12 months
Occurrence of ICU admission after the intervention.
From index procedure through 12 months
Hospital Readmission
Časové okno: From index procedure through 12 months
Occurrence of hospital readmission after the index intervention.
From index procedure through 12 months
Reintervention for Gastric Varices
Časové okno: From index procedure through 12 months
Need for additional endoscopic, interventional radiology, surgical, or other therapy for gastric varices after the index intervention.
From index procedure through 12 months
Procedural Technical Difficulty
Časové okno: During index procedure
Operator-assessed technical difficulty, including procedure time, device use, and challenges encountered during the intervention.
During index procedure
Intervention Cost
Časové okno: During index procedure
Cost of the intervention, including use of coils and assigned embolic material.
During index procedure
Health-Related Quality of Life
Časové okno: 1, 3, 6, and 12 months post-intervention
Health-related quality of life assessed using the SF-36 questionnaire.
1, 3, 6, and 12 months post-intervention

Spolupracovníci a vyšetřovatelé

Zde najdete lidi a organizace zapojené do této studie.

Sponzor

Spolupracovníci

Vyšetřovatelé

  • Vrchní vyšetřovatel: Sunil Gupta, MD, PhD, Division of Gastroenterology, St. Michael's Hospital, Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada

Publikace a užitečné odkazy

Osoba odpovědná za zadávání informací o studiu tyto publikace poskytuje dobrovolně. Mohou se týkat čehokoli, co souvisí se studiem.

Obecné publikace

Termíny studijních záznamů

Tato data sledují průběh záznamů studie a předkládání souhrnných výsledků na ClinicalTrials.gov. Záznamy ze studií a hlášené výsledky jsou před zveřejněním na veřejné webové stránce přezkoumány Národní lékařskou knihovnou (NLM), aby se ujistily, že splňují specifické standardy kontroly kvality.

Hlavní termíny studia

Začátek studia (Odhadovaný)

1. srpna 2026

Primární dokončení (Odhadovaný)

1. listopadu 2027

Dokončení studie (Odhadovaný)

1. srpna 2029

Termíny zápisu do studia

První předloženo

5. července 2026

První předloženo, které splnilo kritéria kontroly kvality

9. července 2026

První zveřejněno (Aktuální)

13. července 2026

Aktualizace studijních záznamů

Poslední zveřejněná aktualizace (Aktuální)

13. července 2026

Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality

9. července 2026

Naposledy ověřeno

1. července 2026

Více informací

Termíny související s touto studií

Další identifikační čísla studie

  • CoAGS-GV-UHT

Plán pro data jednotlivých účastníků (IPD)

Plánujete sdílet data jednotlivých účastníků (IPD)?

ANO

Popis plánu IPD

De-identified individual participant data underlying the results reported in publications may be shared with qualified researchers upon reasonable request, subject to review and approval by the study investigators, Unity Health Toronto institutional requirements, applicable privacy legislation, and any required data sharing agreement. No information that directly identifies participants will be shared.

Časový rámec sdílení IPD

Beginning after publication of the main study results and available for up to 5 years after publication.

Kritéria přístupu pro sdílení IPD

Requests will be considered from qualified researchers with a methodologically sound proposal for purposes consistent with the informed consent and applicable ethics and privacy requirements. Access may require approval from the study investigators and/or institution and completion of a data sharing agreement.

Typ podpůrných informací pro sdílení IPD

  • PROTOKOL STUDY
  • MÍZA
  • ICF

Informace o lécích a zařízeních, studijní dokumenty

Studuje lékový produkt regulovaný americkým FDA

Ne

Studuje produkt zařízení regulovaný americkým úřadem FDA

Ne

Tyto informace byly beze změn načteny přímo z webu clinicaltrials.gov. Máte-li jakékoli požadavky na změnu, odstranění nebo aktualizaci podrobností studie, kontaktujte prosím register@clinicaltrials.gov. Jakmile bude změna implementována na clinicaltrials.gov, bude automaticky aktualizována i na našem webu .