Evaluating EP-104IAR for treating eosinophilic esophagitis in adults
Official title: A Phase 1b/2 Trial Evaluating the Safety, Pharmacokinetics, and Efficacy of EP-104GI in Adults With Eosinophilic Esophagitis (RESOLVE)
Run by Eupraxia Pharmaceuticals Inc. · NCT05608681 · Data updated 2026-11-12
This study is testing a new treatment called EP-104IAR to see if it can help adults with eosinophilic esophagitis feel better.
Quick facts
| Phase | Phase1; Phase2 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years to 75 Years |
| Sex | All |
| Enrollment | 117 (estimated) |
| Sponsor | Eupraxia Pharmaceuticals Inc. Industry-sponsored |
| Locations | 23 sites (Sydney, New South Wales and 22 other locations) |
| Status | Recruiting |
| Started | March 31, 2023 |
| Main results expected | December 2026 |
| Study ends | December 2026 |
| Registry record updated | March 19, 2026 |
| Trial ID | NCT05608681 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults with symptomatic eosinophilic esophagitis who can adhere to study procedures.
✕Probably not a fit
Patients with other significant esophageal diseases or conditions that interfere with the study may not benefit from this trial.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This is an open-label, dose-escalation trial assessing the safety, tolerability, and pharmacokinetics of EP-104IAR in adults diagnosed with eosinophilic esophagitis (EoE). The study will enroll approximately 27 to 33 participants across multiple dose cohorts, with additional participants in selected tolerable dose regimens to identify the recommended phase 2 doses. Participants will undergo endoscopic and histologic evaluations to measure the local effects of the treatment on EoE disease activity over a period of 24-52 weeks.
Why it matters
Potential benefit: If successful, this treatment could provide a new therapeutic option for patients suffering from eosinophilic esophagitis.
How similar studies have gone: While this approach is novel, similar studies targeting eosinophilic esophagitis have shown promise in exploring new treatments.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Symptomatic EoE; * For women of childbearing potential, a negative pregnancy test and willing to use a highly effective method of birth control until end of study; * Willing and able to adhere to study-related procedures and visit schedule; * Willing and able to provide informed consent. Criteria for crossover to EP 104GI from vehicle control (randomized dose optimization portion): 1. Has completed the randomized dose optimization portion of the trial to Week 24, inclusive 2. Without safety concerns for receiving EP 104GI ie, does not meet exclusion criteria or have other safety issue Exclusion Criteria: * Concomitant esophageal disease, relevant GI disease, or any condition, history, or laboratory abnormality that might interfere with the study; * Oral or esophageal mucosal infection of any type (bacterial, viral, or fungal); * Oropharyngeal or dental conditions that prevents normal eating; * Severe esophageal motility disorders other than EoE; * Contraindication to or factors that substantially increase risks associated with EGD or biopsy, or narrowing of the esophagus that precludes EGD with a standard 9-10 mm endoscope, stricture requiring dilation within 8 weeks prior to Screening, or the need for dilation prior to EGD at Baseline; * Any condition for which the use of corticosteroids is contraindicated (Participants with well controlled non-insulin dependent diabetes are permitted); * Active or quiescent systemic fungal, bacterial, viral, or parasitic infections, or ocular herpes simplex. Or recent use of IV or oral antibiotics; * Hypersensitivity, or intolerance to corticosteroids, or to any of the ingredients in the investigational medicinal product, including carboxymethyl cellulose, and polysorbate 80, or to the ingredients in Synacthen / cosyntropin (used in the ACTH stimulation test); * Recent use of disallowed medications, or unwillingness to not use disallowed medications during the study; * Recent initiation of a elimination or elemental diet (dietary therapy must remain stable throughout the study); * Morning serum cortisol level ≤ 5 μg/dL (138 nmol/L); * Clinically significant abnormal laboratory values; * Recent or currently planned participation in another interventional trial ; * Previous participation in this study and had received study treatment; * Females who are pregnant, breastfeeding, or planning to become pregnant during the study; * Malignancies or history of malignancy within prior 5 years, except for treated or excised non-metastatic BCC, SCC of the skin, or cervical carcinoma in situ; * History of alcohol or drug abuse; * Any other reason, that, in the Investigator's opinion, unfavorably alters participant risk, confounds results, or prevents the participant from complying with study requirements.
Where it's running
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Campbelltown Private Hospital
Sydney, New South Wales, Australia Recruiting -
Mater Hospital Brisbane
Brisbane, Queensland, Australia Recruiting -
Princess Alexandra Hospital
Brisbane, Queensland, Australia Recruiting -
Coastal Digestive Health
Maroochydore, Queensland, Australia Recruiting -
Royal Adelaide Hospital
Adelaide, South Australia, Australia Recruiting -
Eastern Health Box Hill
Box Hill, Victoria, Australia Recruiting
Show 17 more locations
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Northern Hospital Epping
Epping, Victoria, Australia Recruiting -
The Alfred Hospital
Melbourne, Victoria, Australia Recruiting -
Royal Melbourne Hospital
Parkville, Victoria, Australia Recruiting -
University of Calgary
Calgary, Alberta, Canada Recruiting -
UoA - South Edmonton Gastroenterology Research Clinic
Edmonton, Alberta, Canada Recruiting -
G.I. Research Institute
Vancouver, British Columbia, Canada Recruiting -
McGill University Health Center
Montreal, Quebec, Canada Recruiting -
Erasmus University Medical Center
Holland, Netherlands Recruiting -
Aotearoa Clinical Trials
Papatoetoe, Auckland, New Zealand Recruiting -
Waikato Hospital
Hamilton, New Zealand Recruiting -
Capital Coast and Hutt
Lower Hutt, New Zealand Recruiting -
Universitätsspital Zürich
Zurich, Switzerland Recruiting -
Norfolk and Norwich University Hospital
Norwich, Norfolk, United Kingdom Recruiting -
Cardiff and Vale University Health Board-Wales
Cardiff, United Kingdom Recruiting -
Royal Liverpool University Hospital
Liverpool, United Kingdom Recruiting -
St George's University of London
London, United Kingdom Recruiting -
Amsterdam UMC
Amsterdam, Netherlands Active not recruiting
Study contacts
- Study coordinator: Pranali Ravikumar, MS
- Email: pravikumar@eupraxiapharma.com
- Phone: 647-895-3016
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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Upadacitinib for Eosinophilic Esophagitis in adults not responding to standard therapy
This study tests whether upadacitinib, taken with topical corticosteroids, can reduce disease activity in adults with eosinophilic esophagitis who still have symptoms.
-
A registry for adults with esophageal movement and reflux problems.
This project will collect esophageal function tests (manometry, pH-impedance, FLIP) and clinical data from adults with reflux or swallowing symptoms to see if combining these results helps guide diagnosis and long-term care.
-
Using a mucosal impedance device to help diagnose chronic esophageal problems
This test tries a mucosal impedance device during upper endoscopy to see if it helps diagnose people with chronic reflux (GERD) or eosinophilic esophagitis.
-
Esophageal string test to screen for eosinophilic esophagitis in adults of African descent with swallowing problems
This study will test whether a 1-hour esophageal string test can detect eosinophilic esophagitis in adults born in Africa (or with African parents) who have trouble swallowing.
-
Improving management of eosinophilic esophagitis in children and adolescents
This study is trying to find better ways to manage eosinophilic esophagitis in kids and teens by using simple tests to avoid invasive procedures and improve their quality of life.
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How common FIRE is and what it looks like in children with eosinophilic esophagitis
This project will see how often and in what ways Food Induced Immediate Response of the Esophagus (FIRE) occurs in children aged 6–17 who have eosinophilic esophagitis.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.