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Eosinophilic Esophagitis Clinical Trials and Treatments

Also called EoE, Eosinophilic Oesophagitis

Eosinophilic Esophagitis is a chronic allergic/immune-mediated inflammatory disease of the esophagus characterized by eosinophil-predominant infiltration of esophageal mucosa and submucosa. The pathophysiology involves T helper 2 (Th2)-mediated immune response to food and/or environmental antigens, with characteristic eosinophil recruitment and degranulation.

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About Eosinophilic Esophagitis

Eosinophilic Esophagitis is a chronic allergic/immune-mediated inflammatory disease of the esophagus characterized by eosinophil-predominant infiltration of esophageal mucosa and submucosa. The pathophysiology involves T helper 2 (Th2)-mediated immune response to food and/or environmental antigens, with characteristic eosinophil recruitment and degranulation. Histologic diagnosis requires 15 or more eosinophils per high-powered field on esophageal biopsy and exclusion of other conditions causing esophageal eosinophilia. The chronic inflammation leads to esophageal remodeling with stricture formation, progressive narrowing, and dysmotility.

Patients present with dysphagia and food impaction, sometimes dramatically with acute impaction episodes requiring endoscopic intervention. Chest pain can occur.

Children may have subtle symptoms including failure to thrive or vomiting, whereas adults typically present with dysphagia and impaction episodes. Progressive stricturing develops with repeated cycles of inflammation and healing. The disease is associated with atopic conditions and IgE-mediated food allergy in many patients, though half have no identified food triggers. Recently, proton pump inhibitor (PPI)-responsive esophageal eosinophilia (PPIE) was recognized as a potentially distinct phenotype.

Common Symptoms of Eosinophilic Esophagitis

Recognizing the signs of Eosinophilic Esophagitis early can lead to faster diagnosis and better outcomes. Symptoms may vary in severity from person to person. If you or a loved one are experiencing any of the following, consider speaking with a specialist.

  • Dysphagia (difficulty swallowing) with food impaction
  • Chest pain or sensation of food being stuck
  • Nausea and vomiting
  • Regurgitation of undigested food
  • Abdominal pain
  • Poor weight gain or malnutrition in children

Who Eosinophilic Esophagitis Affects

Eosinophilic Esophagitis predominantly affects Caucasian males (male-to-female ratio approximately 3:1). It can present in children and adults, with increasing recognition across all age groups. The disease is strongly associated with atopic/allergic conditions including eczema, allergic rhinitis, asthma, and food allergies in 70-80% of patients. There is familial clustering in some cases.

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Help Paying for Eosinophilic Esophagitis Treatment

Charity funds and drugmaker programs for Eosinophilic Esophagitis, checked at the source. Pick your insurance to see what fits.

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Charity funds
  • From a charity · TotalAssist (formerly PAN Foundation)
    Eosinophilic Esophagitis fund
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    Pays for: Out-of-pocket costs for approved medications, up to $2,000 per year. Requires Medicare, Medicaid or TRICARE.

  • From a charity · The Assistance Fund
    Eosinophilic Esophagitis fund
    Waitlist

    Pays for: Copays, coinsurance, deductibles and other health-related expenses.

    The foundation says: “WAITLIST — Accepting Waitlist Patients. TAF is currently accepting requests to join the enrollment waitlist for this program. Waitlists a…”
Status as each foundation showed it on September 28, 2026.

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Side Effect Explorer

Real-world side effect reports from the FDA Adverse Event Reporting System (FAERS). Includes both FDA-approved drugs and investigational therapies from active clinical trials. Click any drug to see what patients reported.

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Genetic Testing

Genetic testing can confirm a diagnosis, guide treatment decisions, and identify family members who may be at risk.

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Trusted Eosinophilic Esophagitis Resources

Reputable organizations and medical references for learning more about Eosinophilic Esophagitis, including disease registries, foundation resources, and clinical guidelines.

Active Clinical Trials for Eosinophilic Esophagitis

Use this Eosinophilic Esophagitis clinical trial finder to see the 28 studies recruiting patients and 2 opening soon in the United States and worldwide, with eligibility criteria in plain English. These studies play a critical role in advancing care for gastrointestinal conditions and may offer access to treatments not yet widely available. Each trial below is sourced directly from ClinicalTrials.gov, with eligibility criteria translated into plain English to help patients and caregivers evaluate whether a study may be a fit.

TrialsSite mapPipeline timeline

Note: Trial recruitment statuses on ClinicalTrials.gov may not immediately reflect recent FDA decisions, sponsor announcements, or enrollment changes. Always confirm a trial's current status directly with the study coordinator before making plans.

41 active trials worldwide
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RECRUITINGPHASE3Recently updatedNCT07112378

A Study of Dupilumab in Small Children With an Allergic Condition of the Esophagus (Food Pipe): Eosinophilic Esophagitis

Intervention: dupilumab

Sponsor: Regeneron Pharmaceuticals · Sanofi

This study is researching an experimental drug called dupilumab (called "study drug"). The study is focused on children with active eosinophilic esophagitis (EoE; an inflammatory disease of the esophagus) which impacts feeding and nourishment.

Ages 6 Months – 6 Years13 locations
Started Nov 2025Updated todayEst. Jun 2028 (~1y 8m)
RECRUITINGNARecently updatedNCT07027826

The Esophageal String Test as a Diagnostic Screening Tool for Eosinophilic Esophagitis Among Africans With Dysphagia in Mali and the United States

Intervention: Esophageal string test

Sponsor: National Institute of Allergy and Infectious Diseases (NIAID)

Background:

Ages 18 Years – 65 Years3 locations
Started Oct 2026Updated todayEst. Aug 2027 (~11 months)
RECRUITINGNARecently updatedNCT06817213

Patient-Centered Decision Support for Eosinophilic Esophagitis

Intervention: General education control, Decision support tool

Sponsor: University of Michigan

The study team is conducting this project to learn more about how patients with eosinophilic esophagitis (EoE) like to use and receive educational materials about treatment options and treatment decision making.

Ages 18 Years+1 location
Started Apr 2025Updated 6 days agoEst. Oct 2026 (6 days)
RECRUITINGRecently updatedNCT02504853

Natural History and Genetics of Food Allergy and Related Conditions

Sponsor: National Institute of Allergy and Infectious Diseases (NIAID)

Background:

- About 15 million Americans have a food allergy. Because there are no cures or effective prevention or treatment for food allergies, researchers want to learn more about them.

Objective:

Ages 1 Day – 99 Years1 location
Started Jul 2015Updated 1 week agoEst. Jun 2027 (~8 months)
RECRUITINGRecently updatedNCT06695897

A Non-interventional Observational Study to Assess Long-term Efficacy and Safety of Dupilumab for the Treatment of Patients (>= 12 Years) With Eosinophilic Esophagitis Under Real-world-conditions in Germany

Intervention: Dupilumab

Sponsor: Sanofi · Regeneron Pharmaceuticals

This is a longitudinal, observational non-interventional study (NIS) designed to characterize the patient population who receives dupilumab for eosinophilic esophagitis (EoE) treatment in a real-world setting in Germany with respect to their medical history, socio-demographic and...

Ages 12 Years+15 locations
Started May 2025Updated 1 week agoEst. Jun 2027 (~8 months)
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Active trial locations30 cities in the US
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Trial Pipeline

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Data from ClinicalTrials.gov, U.S. National Library of Medicine.
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Patient Communities

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Related Gastrointestinal Conditions

Other rare diseases in the gastrointestinal category. Patients with Eosinophilic Esophagitis may find relevant research, shared treatment pathways, or overlapping clinical trials among these related conditions.

Companies Developing Eosinophilic Esophagitis Treatments

12 pharmaceutical companies have Eosinophilic Esophagitis in their rare disease portfolio

Frequently Asked Questions About Eosinophilic Esophagitis