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Pilot Study of Esocheck in Eosinophilic Esophagitis (EoE)

Primary Purpose

Eosinophilic Esophagitis, Diagnoses Disease

Status
Completed
Phase
Not Applicable
Locations
United States
Study Type
Interventional
Intervention
EsoCheck
Sponsored by
University of Pennsylvania
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional device feasibility trial for Eosinophilic Esophagitis focused on measuring eosinophilic esophagitis

Eligibility Criteria

22 Years - undefined (Adult, Older Adult)All SexesDoes not accept healthy volunteers

Inclusion Criteria:

  • Greater than or equal to 22 years of age
  • Known EoE
  • Previously scheduled upper endoscopy at the University of Pennsylvania

Exclusion Criteria:

  • do not meet inclusion criteria
  • do not want to participate
  • known or suspected contraindication for esophageal intubation
  • esophageal stricture with inability to pass an endoscope
  • history of esophageal perforation
  • history of esophageal resection
  • esophageal diverticula
  • esophageal fistula
  • pill dysphagia
  • pill swallowing phobia
  • food impaction
  • esophageal varices
  • coagulopathy
  • active anticoagulation or antithrombotic
  • active GI bleeding
  • pregnancy.

Sites / Locations

  • University of Pennsylvania

Arms of the Study

Arm 1

Arm Type

Other

Arm Label

EoE patients

Arm Description

Patients will all be administered the EsoCheck device as a diagnostic test

Outcomes

Primary Outcome Measures

Safety - Incidence of Adverse Events
One of the primary endpoints will be incidence of adverse events.This will be determined by chart review, telephone call, and any adverse events listed by endoscopist during procedure.
Feasibility - Incidence of patient being able to complete intervention of EsoCheck
The incidence that patient is able to complete EsoCheck. This will be determined by a yes/no survey by the endoscopist stating whether or not the patient successfully completed the intervention.

Secondary Outcome Measures

Sensitivity and Specificity of EsoCheck
Sensitivity and specificity of Esocheck with EGD and biopsy as gold standard.
Sensitivity and Specificity of Brush Cytology
Sensitivity and specificity of brush cytology with EGD and biopsy as gold standard. This is an important reference as EsoCheck is a cytology device.

Full Information

First Posted
February 27, 2020
Last Updated
September 20, 2022
Sponsor
University of Pennsylvania
Collaborators
Lucid Diagnostics, Inc.
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1. Study Identification

Unique Protocol Identification Number
NCT04311970
Brief Title
Pilot Study of Esocheck in Eosinophilic Esophagitis
Acronym
EoE
Official Title
Pilot Study of EsoCheck Compared to Biopsies and Brush Cytology During Endoscopy for Evaluation of Eosinophilic Esophagitis.
Study Type
Interventional

2. Study Status

Record Verification Date
September 2022
Overall Recruitment Status
Completed
Study Start Date
August 5, 2020 (Actual)
Primary Completion Date
August 23, 2021 (Actual)
Study Completion Date
August 23, 2021 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
University of Pennsylvania
Collaborators
Lucid Diagnostics, Inc.

4. Oversight

Studies a U.S. FDA-regulated Drug Product
No
Studies a U.S. FDA-regulated Device Product
Yes
Product Manufactured in and Exported from the U.S.
Yes
Data Monitoring Committee
No

5. Study Description

Brief Summary
Eosinophilic esophagitis (EoE) is a prevalent chronic inflammatory condition of the esophagus characterized by esophageal eosinophilia that can lead to inflammation and stricture formation. To assess remission, esophagogastroduodenoscopies (EGD) with biopsies are performed. This can lead to multiple EGDs, which are invasive and costly procedures. EsoCheck is a promising noninvasive device. It is an encapsulated balloon that can be easily swallowed and collect cells from the distal esophagus. The primary aim of this study is to determine the feasibility and safety of EsoCheck compared with standard endoscopy and biopsies in the assessment of EoE. This will be a prospective cross-sectional study of adult patients (greater than or equal to 22 years of age) at the University of Pennsylvania with a diagnosis of EoE scheduled for a clinically indicated upper endoscopy.
Detailed Description
Background Eosinophilic esophagitis (EoE) is a chronic inflammatory condition of the esophagus characterized by esophageal eosinophilia that can lead to esophageal remodeling and stricture formation. To assess remission, upper endoscopy (EGD) with biopsies is performed. This is an invasive procedure and contributes to cost burden for patients. It is important to assess non-invasive techniques to sample the cells of the esophagus. There have been a few non-invasive testing modalities suggested, including the esophageal string test and Cytosponge. These involve swallowing a string or capsule that ultimately collects esophageal cells. The string test study showed a significant correlation with traditional biopsy pathology, however, limitations included the string remaining in overnight and potential contamination from oral flora. Katzka et al showed that the Cytosponge had an 86% specificity with limitations including gelatin allergy, local esophageal abrasions and similar potential oral contamination as the esophageal string test. Another promising device is EsoCheck. This is an encapsulated balloon that can be easily swallowed and collect cells from the distal esophagus. It is well tolerated and, in Barrett's esophagus, detected metaplasia with 91.7% specificity. The primary aims of this study are to determine the feasibility and safety of EsoCheck compared with standard endoscopy and biopsies in the assessment of EoE. Secondary aims include specific and sensitivity of EsoCheck as well as specificity and sensitivity of brush cytology given that EsoCheck is a cytology device. Detailed Description Study design This is a prospective pilot study at the University of Pennsylvania to evaluate feasibility and safety. Inclusion criteria include patients at least 22 years of age with known EoE diagnosed in accordance with consensus guidelines previously scheduled upper endoscopy at the University of Pennsylvania. Exclusion criteria include: known or suspected contraindication for esophageal intubation, esophageal stricture with inability to pass an endoscope, history of esophageal perforation, history of esophageal resection, esophageal diverticula, esophageal fistula, pill dysphagia, pill swallowing phobia, food impaction, esophageal varices, coagulopathy, active anticoagulation or antithrombotics, active GI bleeding and pregnancy. Consecutive patients will be approached for consent until a total of 20 patients are enrolled. Patients will be approached during the same clinic visit if they meet inclusion criteria that arranges for the EGD or via telephone up to 2 weeks prior to scheduled EGD. Charts will be reviewed and patients will be asked medical and surgical history questions to assess if any exclusion criteria. Written consent will be obtained on the day of endoscopy. Charts will be reviewed and patients called at 1 week follow up to assess if any adverse events. EsoCheck Description The investigational product is called EsoCheck. EsoCheck is an encapsulated, inflatable, surface-textured balloon that is pill-sized (16x9mm) attached to a thin 2.16 mm silicone catheter. The device is swallowed with water. The catheter will be held without any tension to facilitate easy delivery to the stomach. The balloon is then inflated by injecting 5 cc of air through the catheter. This will be gently withdrawn until the tension from the esophageal sphincter is felt by the endoscopist. It is then pulled slowly to sample the esophagus. The balloon is then deflated while still in the distal esophagus using a syringe and inverted back into the capsule. EsoCheck Administration and Upper Endoscopy During the intervention period of the trial, patients will arrive early for their scheduled endoscopy. This involves swallowing the balloon device while unsedated. They will then undergo their previously scheduled endoscopy with standard biopsies taken as well as brush cytology performed as EsoCheck is a cytology device to best compare histology. EsoCheck and Brush Cytology Sample Processing and Handling: After retrieval of the capsule through the mouth, the balloon will be re-inflated, cut from the capsule at the junction of the balloon and the holding capsule. This will be immediately placed into a pre-labeled vial of Preservcyt transport medium. Vials will be stored on site in locked cabinets at room temperature. They will be shipped in small batches with de-identified patient study numbers and sent to the Cytology Department c/o Dr. Joseph Willis, University Hospitals Cleveland Medical Center. Specimens will be processed according to the standard operating procedures of the Department of Pathology at the University Hospitals Cleveland Medical Center. The vial containing the balloon is vortexed for 5 minutes, after which the balloon is then discarded. After centrifugation, the vial is then loaded onto the ThinPrep processor along with required assembly elements - including a pre-labeled slide corresponding to the received specimens. The ThinPrep filter rotates within the specimen vial creating turbulence that is strong enough to separate cells, debris and mucus. In cell collection, a vacuum collects cells on the exterior of the membrane of the filter. In cell transfer, the filter is inverted and gently pressed against the ThinPrep microscope slide. Slight positive air pressure causes the cells to adhere to the microscope slide resulting in an even distribution of cells in a circular area. A ThinPrep slide is then generated and is deposited in an alcohol fixative bath. The slide is then stained with a Hematoxylin and Eosin stain and cover slipped. After the ThinPrep slides are made, attempts will be made to prepare cell blocks from the reminder of the material Cytology brush samples will be analyzed at the University Hospitals Cleveland Medical Center as well with specimens processed according to the standard operating procedures. Histologic and cytologic assessment EsoCheck derived samples will be analyzed at the University Hospitals Cleveland Medical Center. ThinPrep slidesare given to a trained gastroenterology cytopathologist for review. As the ThinPrep technology smears collected cells onto the slide in a uniform manner using a membrane-based technology, the cytopathologist will count eosinophils in one quadrant of the ThinPrep slide. These results will then be compared with the clinical and pathological features of the study individuals. The cell blocks will also be reviewed and results correlated with the ThinPrep slide results. Assessment of brush cytology specimens will be performed at the Department of Pathology at the University Hospitals Cleveland Medical Center to include assessing eosinophil count per high power field (hpf). Histologic assessment of esophageal biopsies will be performed as part of standard of care at the University of Pennsylvania Department of Pathology and will include assessing eosinophil count/hpf. Surveys: Endoscopists will be surveyed regarding perceived anxiety level and comfort level during procedure. Patients will be surveyed before and afterwards regarding confidence level, anxiety level, satisfaction, willingness to undergo it again, and preference of EsoCheck compared with EGD. This survey will be repeated at a 1 week telephone follow up. Statistical Plan: Baseline and demographic characteristics will be summarized by standard descriptive statistics (including mean and standard deviation for continuous variables such as age and standard percentages for categorical variables such as gender). The primary endpoint will be descriptive statistics of feasibility and patient safety assessed based on the answers to surveys as listed above. Secondary endpoints include the sensitivity and specificity of Esocheck with EGD and biopsy as gold standard. Secondary endpoints also include sensitivity and specificity of brush cytology with EGD and biopsy as gold standard. All subjects entered into the study will have detailed information collected on adverse events for the overall study safety analysis

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Eosinophilic Esophagitis, Diagnoses Disease
Keywords
eosinophilic esophagitis

7. Study Design

Primary Purpose
Device Feasibility
Study Phase
Not Applicable
Interventional Study Model
Single Group Assignment
Masking
None (Open Label)
Allocation
N/A
Enrollment
12 (Actual)

8. Arms, Groups, and Interventions

Arm Title
EoE patients
Arm Type
Other
Arm Description
Patients will all be administered the EsoCheck device as a diagnostic test
Intervention Type
Device
Intervention Name(s)
EsoCheck
Intervention Description
All patients with known diagnosis of EoE will be administered the EsoCheck device prior to standard of care endoscopy
Primary Outcome Measure Information:
Title
Safety - Incidence of Adverse Events
Description
One of the primary endpoints will be incidence of adverse events.This will be determined by chart review, telephone call, and any adverse events listed by endoscopist during procedure.
Time Frame
12 months
Title
Feasibility - Incidence of patient being able to complete intervention of EsoCheck
Description
The incidence that patient is able to complete EsoCheck. This will be determined by a yes/no survey by the endoscopist stating whether or not the patient successfully completed the intervention.
Time Frame
12 months
Secondary Outcome Measure Information:
Title
Sensitivity and Specificity of EsoCheck
Description
Sensitivity and specificity of Esocheck with EGD and biopsy as gold standard.
Time Frame
12 months
Title
Sensitivity and Specificity of Brush Cytology
Description
Sensitivity and specificity of brush cytology with EGD and biopsy as gold standard. This is an important reference as EsoCheck is a cytology device.
Time Frame
12 months

10. Eligibility

Sex
All
Minimum Age & Unit of Time
22 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: Greater than or equal to 22 years of age Known EoE Previously scheduled upper endoscopy at the University of Pennsylvania Exclusion Criteria: do not meet inclusion criteria do not want to participate known or suspected contraindication for esophageal intubation esophageal stricture with inability to pass an endoscope history of esophageal perforation history of esophageal resection esophageal diverticula esophageal fistula pill dysphagia pill swallowing phobia food impaction esophageal varices coagulopathy active anticoagulation or antithrombotic active GI bleeding pregnancy.
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Gary W Falk, MD
Organizational Affiliation
University of Pennsylvania
Official's Role
Principal Investigator
Facility Information:
Facility Name
University of Pennsylvania
City
Philadelphia
State/Province
Pennsylvania
ZIP/Postal Code
19104
Country
United States

12. IPD Sharing Statement

Plan to Share IPD
No
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Pilot Study of Esocheck in Eosinophilic Esophagitis

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