Cyanoacrylate Glue Versus Absorbable Gelatin Sponge for Gastric Varices (CoAGS-GV)
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.
Panoramica dello studio
Stato
Stato
Condizioni
Condizioni
Intervento / Trattamento
Intervento / Trattamento
Descrizione dettagliata
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.
Tipo di studio
Tipo di studio
Iscrizione (Stimato)
Iscrizione
Fase
Fase
- Non applicabile
Contatti e Sedi
Contatto studio
Contatto studio
- Nome: Kareem Khalaf, MD
- Numero di telefono: 77537 +1-416-360-4000
- Email: kareem.khalaf@unityhealth.to
Backup dei contatti dello studio
- Nome: Katina Zheng, MD
- Numero di telefono: 77537 +1-416-360-4000
- Email: katina.zheng2@unityhealth.to
Luoghi di studio
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Ontario
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Toronto, Ontario, Canada, M5B 1W8
- St. Michael's Hospital - Unity Health Toronto
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Contatto:
- Kareem Khalaf, MD
- Numero di telefono: 77537 +1-416-360-4000
- Email: kareem.khalaf@unityhealth.to
-
Contatto:
- Katina Zheng, MD
- Numero di telefono: 77537 +1-416-360-4000
- Email: katina.zheng2@unityhealth.to
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Investigatore principale:
- Sunil Gupta, MD, PhD
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-
Criteri di partecipazione
Criteri di ammissibilità
Criteri di ammissibilità
Età idonea allo studio
- Adulto
- Adulto più anziano
Accetta volontari sani
Descrizione
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.
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Scopo principale: Trattamento
- Assegnazione: Randomizzato
- Modello interventistico: Assegnazione parallela
- Mascheramento: Doppio
Numero di armi
Armi e interventi
Gruppo di partecipanti / ArmGruppo di partecipanti / Arm |
Intervento / TrattamentoIntervento / Trattamento |
|---|---|
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Comparatore attivo: 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.
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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.
Altri nomi:
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Sperimentale: 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.
Altri nomi:
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Cosa sta misurando lo studio?
Misure di risultato primarie
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
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Complete Obliteration of the Target Gastric Varix on EUS
Lasso di tempo: 3 months post-intervention
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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.
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3 months post-intervention
|
Misure di risultato secondarie
Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
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Immediate Technical Success
Lasso di tempo: During index procedure
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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.
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During index procedure
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Short-Term Clinical Success
Lasso di tempo: Up to 3 months post-intervention
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Cessation of bleeding if present at baseline and/or absence of recurrent gastric variceal bleeding after the intervention.
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Up to 3 months post-intervention
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Procedure-Related Adverse Events
Lasso di tempo: From index procedure through 12 months
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Rate and severity of procedure-related adverse events, categorized according to the ASGE Lexicon for endoscopic adverse events.
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From index procedure through 12 months
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Long-Term Technical Success
Lasso di tempo: 12 months post-intervention
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Complete obliteration of the treated gastric varix on repeat EUS, defined as absence of Doppler flow in the treated target varix.
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12 months post-intervention
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Long-Term Clinical Success
Lasso di tempo: Up to 12 months post-intervention
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Absence of recurrent gastric variceal bleeding and assessment of clinical durability after the intervention.
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Up to 12 months post-intervention
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Altre misure di risultato
Altre misure di risultato
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
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Transfusion Requirements
Lasso di tempo: From index procedure through 12 months
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Number of blood product transfusions required after the intervention.
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From index procedure through 12 months
|
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Rebleeding
Lasso di tempo: From index procedure through 12 months
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Occurrence of recurrent gastric variceal bleeding after the index intervention.
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From index procedure through 12 months
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Hospital Length of Stay
Lasso di tempo: From index admission up to 30 days
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Length of hospital stay associated with the index presentation and intervention.
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From index admission up to 30 days
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ICU Admission
Lasso di tempo: From index procedure through 12 months
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Occurrence of ICU admission after the intervention.
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From index procedure through 12 months
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Hospital Readmission
Lasso di tempo: From index procedure through 12 months
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Occurrence of hospital readmission after the index intervention.
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From index procedure through 12 months
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Reintervention for Gastric Varices
Lasso di tempo: From index procedure through 12 months
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Need for additional endoscopic, interventional radiology, surgical, or other therapy for gastric varices after the index intervention.
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From index procedure through 12 months
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Procedural Technical Difficulty
Lasso di tempo: During index procedure
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Operator-assessed technical difficulty, including procedure time, device use, and challenges encountered during the intervention.
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During index procedure
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Intervention Cost
Lasso di tempo: During index procedure
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Cost of the intervention, including use of coils and assigned embolic material.
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During index procedure
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Health-Related Quality of Life
Lasso di tempo: 1, 3, 6, and 12 months post-intervention
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Health-related quality of life assessed using the SF-36 questionnaire.
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1, 3, 6, and 12 months post-intervention
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Collaboratori e investigatori
Sponsor
Sponsor
Collaboratori
Collaboratori
Investigatori
Investigatori
- Investigatore principale: Sunil Gupta, MD, PhD, Division of Gastroenterology, St. Michael's Hospital, Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada
Pubblicazioni e link utili
Pubblicazioni generali
- Kaplan DE, Ripoll C, Thiele M, Fortune BE, Simonetto DA, Garcia-Tsao G, Bosch J. AASLD Practice Guidance on risk stratification and management of portal hypertension and varices in cirrhosis. Hepatology. 2024 May 1;79(5):1180-1211. doi: 10.1097/HEP.0000000000000647. Epub 2023 Oct 23. No abstract available.
- Saracco G, Giordanino C, Roberto N, Ezio D, Luca T, Caronna S, Carucci P, De Bernardi Venon W, Barletti C, Bruno M, De Angelis C, Musso A, Repici A, Suriani R, Rizzetto M. Fatal multiple systemic embolisms after injection of cyanoacrylate in bleeding gastric varices of a patient who was noncirrhotic but with idiopathic portal hypertension. Gastrointest Endosc. 2007 Feb;65(2):345-7. doi: 10.1016/j.gie.2006.07.009. Epub 2006 Dec 1. No abstract available.
- McCarty TR, Bazarbashi AN, Hathorn KE, Thompson CC, Ryou M. Combination therapy versus monotherapy for EUS-guided management of gastric varices: A systematic review and meta-analysis. Endosc Ultrasound. 2020 Jan-Feb;9(1):6-15. doi: 10.4103/eus.eus_37_19.
- Bazarbashi AN, Wang TJ, Thompson CC, Ryou M. Endoscopic ultrasound-guided treatment of gastric varices with coil embolization and absorbable hemostatic gelatin sponge: a novel alternative to cyanoacrylate. Endosc Int Open. 2020 Feb;8(2):E221-E227. doi: 10.1055/a-1027-6708. Epub 2020 Jan 28.
- Bazarbashi AN, Wang TJ, Jirapinyo P, Thompson CC, Ryou M. Endoscopic Ultrasound-Guided Coil Embolization With Absorbable Gelatin Sponge Appears Superior to Traditional Cyanoacrylate Injection for the Treatment of Gastric Varices. Clin Transl Gastroenterol. 2020 May;11(5):e00175. doi: 10.14309/ctg.0000000000000175.
- Florencio de Mesquita C, Antunes VLJ, Milioli NJ, Fernandes MV, Correa TL, Martins OC, Chavan R, Baraldo S. EUS-guided coiling plus glue injection compared with endoscopic glue injection alone in endoscopic treatment for gastric varices: a systematic review and meta-analysis. Gastrointest Endosc. 2025 Feb;101(2):331-340.e8. doi: 10.1016/j.gie.2024.10.005. Epub 2024 Oct 9.
- Bhat YM, Weilert F, Fredrick RT, Kane SD, Shah JN, Hamerski CM, Binmoeller KF. EUS-guided treatment of gastric fundal varices with combined injection of coils and cyanoacrylate glue: a large U.S. experience over 6 years (with video). Gastrointest Endosc. 2016 Jun;83(6):1164-72. doi: 10.1016/j.gie.2015.09.040. Epub 2015 Oct 9.
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Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Termini MeSH pertinenti aggiuntivi
- Malattie dell'apparato digerente
- Malattie gastrointestinali
- Malattie del fegato
- Malattie esofagee
- Ipertensione, Portale
- Varici esofagee e gastriche
- Lipidi
- Azioni e usi chimici
- Attrezzatura chirurgica
- Attrezzatura e forniture
- Materiali fabbricati
- Tecnologia, industria e agricoltura
- Usi speciali di sostanze chimiche
- Preparazioni delle piante
- Prodotti biologici
- Miscele complesse
- Oli vegetali
- Oli
- Olio iodizzato
- Spugne Chirurgiche
- Olio Etiodizzato
- Spugna di gelatina, riassorbibile
- Glubran 2
- Adesivi
- p80-coilin
Altri numeri di identificazione dello studio
Altri numeri di identificazione dello studio
- CoAGS-GV-UHT
Piano per i dati dei singoli partecipanti (IPD)
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Descrizione del piano IPD
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- STUDIO_PROTOCOLLO
- LINFA
- ICF
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