Ultralong-segment Barrett's Esophagus: Towards a Capsule-sponge Surveillance Strategy

Ultralong-segment Barrett's Esophagus: Towards a Capsule-sponge Surveillance Strategy

The purpose of this study is to evaluate the Endosign capsule sponge test as a novel surveillance method in patients with an ultralong-segment Barrett's esophagus.

In this study we will investigate the concordance between the Endosign capsule sponge test and esophagogastroduodenoscopy (EGD) by an expert endoscopist to detect dysplasia and/or esophageal adenocarcinoma (EAC) in patients with an ultralong-segment Barrett's esophagus. Patients will receive both the Endosign test and an EGD, after which we will compare both outcomes. To detect dysplasia and/or EAC on the cells collected by the Endosign test, we will look at cellular atypia and use p53 immunohistochemistry and novel biomarkers. In the future the Endosign test could perhaps replace EGD in the surveillance of Barrett's esophagus patients.

Inclusion Criteria:

• Any participant 18 years and above, with ultralong-segment Barrett's esophagus and clinically fit for an endoscopy
• Ability to provide informed consent

Exclusion Criteria:

• Individuals with a diagnosis of an oro-pharynx, esophageal or gastro-esophageal tumor (T2 staging and above), or symptoms of dysphagia
• Esophageal varices or stricture requiring dilatation of the esophagus
• Individuals who have had a cerebrovascular event < 6 months prior where their swallowing has been affected
• Patients who have had previous treatments such as Photodynamic therapy (PDT), Radiofrequency ablation (RFA) or Argon Plasma Coagulation (APC) for dysplastic Barrett's esophagus
• Participants who are unable to provide informed consent
• Participants under age 18 years