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Natural History of Eosinophilic Esophagitis

Study Purpose

Researchers are trying to understand the course of Eosinophilic Esophagitis (EoE), its progression and effects of treatments.

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 18 Years and Over
Gender All
More Inclusion & Exclusion Criteria

Inclusion Criteria:

  • - Adults 18 years of age and older.
  • - Previous participation in the natural history followup study.

Exclusion Criteria:

  • - Inability to read due to: Blindness, cognitive dysfunction, or English language illiteracy.
- Pregnant women

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.

Mayo Clinic
Principal Investigator

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

Jeffrey A Alexander, MD
Principal Investigator Affiliation Mayo Clinic
Agency Class

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

Overall Status Recruiting
Countries United States

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

Eosinophilic Esophagitis
Additional Details

Investigators will identify patients from their database who have been diagnosed with Eosinophilic Esophagitis (EE) from the study period 2000 to 2008, based on clinical features and biopsy findings. Participants will be offered a follow up evaluation that includes: evaluation by the Principal Investigator, completion of questionnaires, Esophagram and Esophageal sponge (EsophaCap) cytology.

Arms & Interventions


: EE Study Patients 2000-2008

All patients with the diagnosis of EE from the study period 2000 to 2008. Sixty patients participated in the 10 year follow up phone interview and questionnaire. These are the subjects we will contact to see if they are interested in participating in this study. If interested in participating, subjects will complete: Evaluation by the PI physical examination Complete the modified Mayo dysphagia Questionnaire (MDQ) and the Eosinophilic Esophagitis Activity Index (EEsAI) questionnaires Barium Esophagram with maximal and minimal esophageal diameter measurement EsophaCap cytology


Diagnostic Test: - Barium Esophagram

Fast for 4 hours prior to the Esophagram (upper GI x-ray). You will drink a liquid that has barium or another contrast agent in it. The radiologist will use the X-ray machine to look at your upper GI tract while you drink the contrast liquid. The x-ray exam should take between 10-15 minutes.

Device: - EsophaCap

Subjects will swallow the EsophaCap, which has a string attached, 10 minutes later it has devolved in the stomach. The PI will pull the string to remove the EsophaCap. We will send the sponge for cytology assessing the histologic results of eosinophils per high power field (phf)

Diagnostic Test: - Physical Examination and Questionnaires

Complete the modified Mayo dysphagia Questionnaire (MDQ) and the Eosinophilic Esophagitis Activity Index (EEsAI) at time of physical exam visit with PI.

Contact a Trial Team

If you are interested in learning more about this trial, find the trial site nearest to your location and contact the site coordinator via email or phone. We also strongly recommend that you consult with your healthcare provider about the trials that may interest you and refer to our terms of service below.

Mayo Clinic, Rochester, Minnesota




Mayo Clinic

Rochester, Minnesota, 55905

Site Contact

Debra M. Geno, CCRP



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