A Trial to Evaluate EP-104GI in Adults With Eosinophilic Esophagitis (EoE).

NCT ID: NCT05608681

Last Updated: 2025-12-10

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE1/PHASE2

Total Enrollment

117 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-03-31

Study Completion Date

2026-12-31

Brief Summary

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A Phase 1b/2 study to explore the safety, efficacy and pharmacokinetics of EP-104GI in adults with eosinophilic esophagitis (EoE). Endoscopic and histologic assessments will also be evaluated to understand the local effects of EP-104GI on eosinophilic EoE disease activity. Approximately 27 to 33 participants will be enrolled in dose escalation: 3-6 participants per dose cohort. The number of participants enrolled in escalation will depend on the number of dose escalation cohorts evaluated, and dose cohorts needing to be expanded. An additional 10-24 participants will be enrolled in 1 or 2 cohorts of 10-12 participants each at tolerable dose regimen(s) selected based on the accumulated clinical data to identify the recommended phase 2 dose(s) (RP2D). In the Phase 2 randomized dose optimization portion of the study, approximately 120 subjects will be randomized to Dose A (120 mg total dose), Dose B (160 mg total dose), or matching vehicle control, with an overall assignment ratio of 1:1:1. The total number of participants in both portions of the study will be approximately 160. The study involves 8-10 site visits spread over approximately 52 weeks. Participants in an extended PK sub study will have up to 4 additional visits, to a maximum of 108 weeks post-dose. The participants will either receive the active study drug (EP-104GI) or matching vehicle control. Matching vehicle control will be used only in randomized dose optimization portion of the study. Participants randomized to receive vehicle control may receive EP-104GI (Dose A or Dose B) following the completion of Week 24 providing they meet eligibility criteria for crossover to EP-104GI. Participants randomized to receive EP-104GI on Day 0 will not receive EP-104GI or vehicle control at Week 24. The study drug or matching vehicle control will be administered by qualified personnel during an esophagogastroduodenoscopy (EGD) procedure at the Baseline/Dosing visit. Safety will be assessed throughout the study. Blood and urine samples will be collected at site visits for laboratory assessments and to measure plasma levels of EP-104GI. Participants will complete questionnaires to assess symptoms of dysphagia and odynophagia and will undergo 3-5 EGDs with esophageal biopsies at the Baseline, Week 4 (dose escalation phase only), Week 12, Week 24 (randomized dose optimization phase only), Week 26, and Week 52 (randomized dose optimization phase only).

Detailed Description

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Conditions

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Eosinophilic Esophagitis

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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EP-104GI 4 mg

4 submucosal injections of EP-104GI administered during an EGD procedure at the Baseline/Dosing visit.

Group Type EXPERIMENTAL

EP-104GI

Intervention Type DRUG

Extended-release fluticasone propionate \[FP\] for injectable suspension for gastrointestinal administration, Powder suspended in vehicle

EP-104GI 8 mg

8 submucosal injections of EP-104GI administered during an EGD procedure at the Baseline/Dosing visit.

Group Type EXPERIMENTAL

EP-104GI

Intervention Type DRUG

Extended-release fluticasone propionate \[FP\] for injectable suspension for gastrointestinal administration, Powder suspended in vehicle

EP-104GI 20 mg

8 submucosal injections of EP-104GI administered during an EGD procedure at the Baseline/Dosing visit.

Group Type EXPERIMENTAL

EP-104GI

Intervention Type DRUG

Extended-release fluticasone propionate \[FP\] for injectable suspension for gastrointestinal administration, Powder suspended in vehicle

EP-104GI 30 mg

12 submucosal injections of EP-104GI administered during an EGD procedure at the Baseline/Dosing visit.

Group Type EXPERIMENTAL

EP-104GI

Intervention Type DRUG

Extended-release fluticasone propionate \[FP\] for injectable suspension for gastrointestinal administration, Powder suspended in vehicle

EP-104GI 48 mg

12 submucosal injections of EP-104GI administered during an EGD procedure at the Baseline/Dosing visit.

Group Type EXPERIMENTAL

EP-104GI

Intervention Type DRUG

Extended-release fluticasone propionate \[FP\] for injectable suspension for gastrointestinal administration, Powder suspended in vehicle

EP-104GI 64 mg

16 submucosal injections of EP-104GI administered during an EGD procedure at the Baseline/Dosing visit.

Group Type EXPERIMENTAL

EP-104GI

Intervention Type DRUG

Extended-release fluticasone propionate \[FP\] for injectable suspension for gastrointestinal administration, Powder suspended in vehicle

EP-104GI 80 mg

20 submucosal injections of EP-104GI administered during an EGD procedure at the Baseline/Dosing visit.

Group Type EXPERIMENTAL

EP-104GI

Intervention Type DRUG

Extended-release fluticasone propionate \[FP\] for injectable suspension for gastrointestinal administration, Powder suspended in vehicle

EP-104GI 96 mg

16 submucosal injections of EP-104GI administered during an EGD procedure at the Baseline/Dosing visit.

Group Type EXPERIMENTAL

EP-104GI

Intervention Type DRUG

Extended-release fluticasone propionate \[FP\] for injectable suspension for gastrointestinal administration, Powder suspended in vehicle

EP-104GI 120 mg

20 submucosal injections of EP-104GI administered during an EGD procedure at the Baseline/Dosing visit.

Group Type EXPERIMENTAL

EP-104GI

Intervention Type DRUG

Extended-release fluticasone propionate \[FP\] for injectable suspension for gastrointestinal administration, Powder suspended in vehicle

EP-104GI Dose A or matching vehicle control

20 submucosal injections of EP-104GI administered during an EGD procedure at the Baseline/Dosing visit.

Group Type PLACEBO_COMPARATOR

EP-104GI

Intervention Type DRUG

Extended-release fluticasone propionate \[FP\] for injectable suspension for gastrointestinal administration, Powder suspended in vehicle

Matching vehicle control

Intervention Type OTHER

A sterile liquid containing sterile water and excipients necessary to prepare a uniform suspension of the powder.

EP-104GI 160 mg

20 submucosal injections of EP-104GI administered during an EGD procedure at the Baseline/Dosing visit.

Group Type EXPERIMENTAL

EP-104GI

Intervention Type DRUG

Extended-release fluticasone propionate \[FP\] for injectable suspension for gastrointestinal administration, Powder suspended in vehicle

EP-104GI Dose B or matching vehicle control

20 submucosal injections of EP-104GI administered during an EGD procedure at the Baseline/Dosing visit.

Group Type PLACEBO_COMPARATOR

EP-104GI

Intervention Type DRUG

Extended-release fluticasone propionate \[FP\] for injectable suspension for gastrointestinal administration, Powder suspended in vehicle

Matching vehicle control

Intervention Type OTHER

A sterile liquid containing sterile water and excipients necessary to prepare a uniform suspension of the powder.

Interventions

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EP-104GI

Extended-release fluticasone propionate \[FP\] for injectable suspension for gastrointestinal administration, Powder suspended in vehicle

Intervention Type DRUG

Matching vehicle control

A sterile liquid containing sterile water and excipients necessary to prepare a uniform suspension of the powder.

Intervention Type OTHER

Eligibility Criteria

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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

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.
Minimum Eligible Age

18 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Eupraxia Pharmaceuticals Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Mark Kowalski, MD PhD

Role: STUDY_DIRECTOR

Eupraxia Pharmaceuticals

Locations

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Campbelltown Private Hospital

Sydney, New South Wales, Australia

Site Status RECRUITING

Mater Hospital Brisbane

Brisbane, Queensland, Australia

Site Status RECRUITING

Princess Alexandra Hospital

Brisbane, Queensland, Australia

Site Status RECRUITING

Coastal Digestive Health

Maroochydore, Queensland, Australia

Site Status RECRUITING

Royal Adelaide Hospital

Adelaide, South Australia, Australia

Site Status RECRUITING

Eastern Health Box Hill

Box Hill, Victoria, Australia

Site Status RECRUITING

Northern Hospital Epping

Epping, Victoria, Australia

Site Status RECRUITING

The Alfred Hospital

Melbourne, Victoria, Australia

Site Status RECRUITING

Royal Melbourne Hospital

Parkville, Victoria, Australia

Site Status RECRUITING

University of Calgary

Calgary, Alberta, Canada

Site Status RECRUITING

UoA - South Edmonton Gastroenterology Research Clinic

Edmonton, Alberta, Canada

Site Status RECRUITING

G.I. Research Institute

Vancouver, British Columbia, Canada

Site Status RECRUITING

McGill University Health Center

Montreal, Quebec, Canada

Site Status RECRUITING

Amsterdam UMC

Amsterdam, , Netherlands

Site Status RECRUITING

Aotearoa Clinical Trials

Papatoetoe, Auckland, New Zealand

Site Status RECRUITING

Capital Coast and Hutt

Lower Hutt, , New Zealand

Site Status RECRUITING

Universitätsspital Zürich

Zurich, , Switzerland

Site Status RECRUITING

Norfolk and Norwich University Hospital

Norwich, Norfolk, United Kingdom

Site Status RECRUITING

Cardiff and Vale University Health Board-Wales

Cardiff, , United Kingdom

Site Status RECRUITING

Countries

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Australia Canada Netherlands New Zealand Switzerland United Kingdom

Central Contacts

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Pranali Ravikumar, MS

Role: CONTACT

647-895-3016

Facility Contacts

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Rashmi Gamage

Role: primary

Sharyn Grossman

Role: primary

Teressa Hansen

Role: primary

Charlotte Early

Role: primary

Joshua Zobel

Role: primary

Emma Dimitri

Role: primary

Gloria Sepe

Role: primary

Jean Zhang

Role: primary

Irene Bell

Role: primary

Role: primary

Claire Graham

Role: primary

Maria Ancheta-Schmit

Role: primary

Pascale Germain

Role: primary

Aaltje Lei

Role: primary

Indu Muniraj

Role: primary

Ana Enriquez

Role: primary

Sabine Burk

Role: primary

Sally Ann Copsey

Role: primary

Maryanne Bray

Role: primary

Other Identifiers

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EP-104IAR-102 (RESOLVE)

Identifier Type: -

Identifier Source: org_study_id

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