Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
30 participants
INTERVENTIONAL
2014-04-30
2020-06-30
Brief Summary
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In patients with portal hypertension from cirrhosis, current guidelines recommend non-selective beta-blocker, endoscopic band ligation for esophageal varices after initial bleeding, and either cyanoacrylate injection for variceal obturation or transjugular intrahepatic portosystemic shunt for gastric varices after initial bleeding. However, it is unclear whether the above strategies will have the same clinical effect for patients with liver cancer and/or portal vein thrombosis who are at high risk for recurrent bleeding.
Recently, the technique of endoscopic ultrasound (EUS) guided cyanoacrylate (glue) injection for variceal obturation has been described. In a study of patients with gastric variceal bleeding, EUS guided glue injection and coiling was reported to achieve hemostasis in all patients and 96% of the gastric varices remained obliterated during the follow-up period. To date, there has been no dedicated study to evaluate the role of EUS guided glue injection for prevention of future bleeding in patients at high risk for recurrent variceal bleeding such as those with liver cancer or portal vein thrombosis.
The investigators propose this study to evaluate the feasibility and safety of EUS guided glue injection for follow-up variceal treatment in patients at high risk for recurrent variceal bleeding, such as those with liver cancer and/or portal vein thrombosis.
Detailed Description
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In patients who survive the acute variceal bleeding episode but without secondary prophylaxis, the median rebleeding rate is about 60% within 1- 2 years of the index bleeding with a mortality of 33%. The presence of hepatocellular carcinoma (HCC) and/or portal vein thrombosis (PVT) have been associated with recurrent variceal bleeding and worse outcome. In a retrospective study of 2928 HCC patients in Hong Kong, 7.9% of the patients developed at least 1 episode of variceal bleeding over the course of HCC. In cirrhotic patients with PVT but without HCC, variceal bleeding is not an uncommon complication.
In patients with portal hypertension from cirrhosis, current guidelines recommend non-selective beta-blocker, endoscopic band ligation for esophageal varices after initial bleeding, and either cyanoacrylate injection for variceal obturation or transjugular intrahepatic portosystemic shunt for gastric varices after initial bleeding. However, it is unclear whether the above strategies will have the same clinical effect for patients with liver cancer and/or portal vein thrombosis who are at high risk for recurrent bleeding.
Recently, the technique of endoscopic ultrasound (EUS) guided cyanoacrylate (glue) injection for variceal obturation has been described. In a study of patients with gastric variceal bleeding, EUS guided glue injection and coiling was reported to achieve hemostasis in all patients and 96% of the gastric varices remained obliterated during the follow-up period. To date, there has been no dedicated study to evaluate the role of EUS guided glue injection for prevention of future bleeding in patients at high risk for recurrent variceal bleeding such as those with liver cancer or portal vein thrombosis.
The investigators propose this study to evaluate the feasibility and safety of EUS guided glue injection for follow-up variceal treatment in patients at high risk for recurrent variceal bleeding, such as those with liver cancer and/or portal vein thrombosis.
Conditions
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Study Design
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NON_RANDOMIZED
PARALLEL
PREVENTION
NONE
Study Groups
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EUS-guided glue injection
Gastroesophageal varices \> 3mm in diameter will be treated with EUS guided cyanoacrylate injection for variceal obturation in standard fashion. A conventional 19G needle (19G-Echotip needle, Cook Medical, USA) will be advanced into the target varix under real-time EUS guidance. Cyanoacrylate injection (Histoacryl, B. Braun Surgical, Germany) will be performed according to established protocol. Each aliquot of cyanoacrylate injection will consist of 0.5ml of Histoacryl + 0.7ml of lipiodol. 1 - 3 aliquots of cyanoacrylate injection may be given depending on the number of varices needed to be treated. EUS with colour Doppler will be used to monitor obliteration of blood flow in varices during and after cyanoacrylate injection.
EUS-guided glue injection
Experimental: EUS-guided glue injection Gastroesophageal varices \> 3mm in diameter will be treated with EUS guided cyanoacrylate injection for variceal obturation in standard fashion. A conventional 19G needle (19G-Echotip needle, Cook Medical, USA) will be advanced into the target varix under real-time EUS guidance. Cyanoacrylate injection (Histoacryl, B. Braun Surgical, Germany) will be performed according to established protocol. Each aliquot of cyanoacrylate injection will consist of 0.5ml of Histoacryl + 0.7ml of lipiodol. 1 - 3 aliquots of cyanoacrylate injection may be given depending on the number of varices needed to be treated. EUS with colour Doppler will be used to monitor obliteration of blood flow in varices during and after cyanoacrylate injection.
Historical control
A historical control group of HCC patients with gastroesophageal variceal bleeding who underwent conventional cyanoacrylate injection by OGD for index variceal bleeding based on de-identified data from an existing prospective GI bleed database from 2009-2013 would also be included to allow a more meaningful interpretation of the rebleeding rate from gastroesophageal varices from this study.
No interventions assigned to this group
Interventions
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EUS-guided glue injection
Experimental: EUS-guided glue injection Gastroesophageal varices \> 3mm in diameter will be treated with EUS guided cyanoacrylate injection for variceal obturation in standard fashion. A conventional 19G needle (19G-Echotip needle, Cook Medical, USA) will be advanced into the target varix under real-time EUS guidance. Cyanoacrylate injection (Histoacryl, B. Braun Surgical, Germany) will be performed according to established protocol. Each aliquot of cyanoacrylate injection will consist of 0.5ml of Histoacryl + 0.7ml of lipiodol. 1 - 3 aliquots of cyanoacrylate injection may be given depending on the number of varices needed to be treated. EUS with colour Doppler will be used to monitor obliteration of blood flow in varices during and after cyanoacrylate injection.
Eligibility Criteria
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Inclusion Criteria
* Age \> 18 years
* Written informed consent available
Exclusion Criteria
* Unable to provide written informed consent
* Refractory coagulopathy (INR\>1.5) or refractory thrombocytopenia (platelets \<50,000) despite blood product transfusion
* Pregnant patients
* Moribund patients from terminal illnesses
18 Years
85 Years
ALL
No
Sponsors
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Chinese University of Hong Kong
OTHER
Responsible Party
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Raymond Shing Yan Tang
Clinical Professional Consultant
Principal Investigators
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Raymond S Tang, MD
Role: PRINCIPAL_INVESTIGATOR
Chinese University of Hong Kong
Locations
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The Chinese University of Hong Kong
Hong Kong, , Hong Kong
Countries
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Other Identifiers
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EUS Glue Study
Identifier Type: -
Identifier Source: org_study_id