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Metabolomic Profiling of Eosinophilic Esophagitis

Study Purpose

A prospective longitudinal, observational study of adolescent and adults that will identify novel metabolites associated with dysphagia in Eosinophilic Esophagitis (EoE).

Recruitment Criteria

Accepts Healthy Volunteers

Healthy volunteers are participants who do not have a disease or condition, or related conditions or symptoms

Study Type

An interventional clinical study is where participants are assigned to receive one or more interventions (or no intervention) so that researchers can evaluate the effects of the interventions on biomedical or health-related outcomes.

An observational clinical study is where participants identified as belonging to study groups are assessed for biomedical or health outcomes.

Searching Both is inclusive of interventional and observational studies.

Eligible Ages 11 Years - 55 Years
Gender All
More Inclusion & Exclusion Criteria

Inclusion Criteria:

- Subjects with Eosinophilic Esophagitis (EoE) and seen either at Children's Hospital Colorado or University of Colorado Hospital for scheduled outpatient clinical assessment or upper GI endoscopy

Exclusion Criteria:

- Acute food impaction at time of study - Recent (within 2 months) use of systemic steroids - Other known esophageal disease or esophageal injury (e.g. tracheoesophageal fistula, congenital stricture, caustic injury) - known other inflammatory bowel disease - inability to swallow the EST

Trial Details

Trial ID:

This trial id was obtained from ClinicalTrials.gov, a service of the U.S. National Institutes of Health, providing information on publicly and privately supported clinical studies of human participants with locations in all 50 States and in 196 countries.


Phase 1: Studies that emphasize safety and how the drug is metabolized and excreted in humans.

Phase 2: Studies that gather preliminary data on effectiveness (whether the drug works in people who have a certain disease or condition) and additional safety data.

Phase 3: Studies that gather more information about safety and effectiveness by studying different populations and different dosages and by using the drug in combination with other drugs.

Phase 4: Studies occurring after FDA has approved a drug for marketing, efficacy, or optimal use.

Lead Sponsor

The sponsor is the organization or person who oversees the clinical study and is responsible for analyzing the study data.

University of Colorado, Denver
Principal Investigator

The person who is responsible for the scientific and technical direction of the entire clinical study.

Principal Investigator Affiliation N/A
Agency Class

Category of organization(s) involved as sponsor (and collaborator) supporting the trial.

Overall Status Not yet recruiting

The disease, disorder, syndrome, illness, or injury that is being studied.

Eosinophilic Esophagitis
Additional Details

In this study, the investigators seek to understand whether a metabolomic profile obtained from esophageal samples correlate with the symptom of dysphagia in adolescent and adults. The investigators hypothesize that intraluminal secreted metabolite(s) will change during episodes of dysphagia. The aim of the study will be to use a novel method of producing esophageal luminal samples, the esophageal string test, to capture esophageal metabolites when a patient is and is not experiencing dysphagia.

Arms & Interventions


Experimental: EST

All subjects enrolled into the study will: Complete a clinical history Have vitals obtained Complete Patient-reported outcomes Have Esophageal mucosal biopsies collected as part of standard of care at the time of the most recent endoscopy to report the peak eosinophilia per hpf. Complete the Esophageal String test


Procedure: - Esophageal String Test

An EST will be performed for a 1hour sampling period on the same day as the scheduled clinic visit. Subjects will be asked to swallow a capsule and the attached EST string will be taped to the cheek with tegaderm tape. At the completion of the 1-hour sampling period, the EST will be removed and it will immediately be processed and cryopreserved for metabolomics profiling.

Contact Information

This trial has no sites locations listed at this time. If you are interested in learning more, you can contact the trial's primary contact:

Kendra M Kocher, BaS



For additional contact information, you can also visit the trial on clinicaltrials.gov.

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