A Study of EDP1815 in Healthy Participants and Participants With Mild to Moderate Psoriasis and Atopic Dermatitis

A Phase 1 Randomized Double-Blind Placebo-controlled Single and Multiple Ascending Dose Study of EDP1815 in Healthy Participants and Participants With Mild to Moderate Psoriasis or Atopic Dermatitis

Evelo will investigate the safety and tolerability of EDP1815 and its potential to be a medicinal product in healthy volunteers and individuals with mild to moderate psoriasis and atopic dermatitis.

Study Overview

• Status: Completed
• Conditions: Psoriasis; Atopic Dermatitis
• Intervention / Treatment: Drug: Placebo oral tablet; Drug: Placebo oral capsule; Drug: EDP1815

Detailed Description

This will be a randomized, double-blind, placebo-controlled clinical study with dose escalations to assess safety, tolerability, and pharmacodynamic effect of EDP1815. Since this clinical study is the first study in humans, the participants will be healthy volunteers or subjects with mild to moderate psoriasis or atopic dermatitis who are otherwise well. Investigation of EDP1815 in this patient population provides an opportunity to gain pharmacodynamic information using a range of tissue biopsies and composite clinical endpoints.

• Study Type: Interventional
• Enrollment (Actual): 204
• Phase: Phase 1

Contacts and Locations

Study Locations

• United Kingdom
  • Barnsley, United Kingdom
    • UK-8
  • Blackpool, United Kingdom
    • UK-7
  • Cannock, United Kingdom
    • UK-3
  • Leeds, United Kingdom
    • UK-4
  • Liverpool, United Kingdom
    • UK-5
  • London, United Kingdom
    • UK-1
  • Manchester, United Kingdom
    • UK-2
  • Manchester, United Kingdom
    • UK-6
  • Stockton-on-Tees, United Kingdom
    • UK-9

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 14 years to 61 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

General:

Participant has a body mass index of ≥ 18 kg/m2 to ≤ 35 kg/m2 at Screening.

Healthy Volunteers:

Participants who are overtly healthy as determined by medical evaluation including medical history, physical examination, laboratory tests, and cardiac monitoring.

Mild to moderate psoriasis:

1. Participant has had a confirmed diagnosis of mild to moderate plaque-type psoriasis for at least 6 months involving ≤ 10% of body surface area (BSA) (excluding the scalp).
2. Participant has a minimum of 2 psoriatic lesions with at least 1 plaque in a site suitable for biopsy.

Mild to moderate atopic dermatitis:

1. Mild to moderate atopic dermatitis with a minimum of 3% to a maximum of 15% BSA involvement.
2. Participant has had a confirmed diagnosis of mild to moderate atopic dermatitis for at least 6 months (IGA score of 2 or 3).
3. Participant has a minimum of 2 atopic dermatitis lesions with at least 1 in a site suitable for biopsy.

Exclusion Criteria:

1. Female participant who is pregnant, or plans to become pregnant during the study, or breastfeeding, or sexually active with childbearing potential who is not using a medically accepted birth control method.
2. Participant has received live attenuated vaccination within 6 weeks prior to Screening or intends to have such a vaccination during the course of the study.
3. Participant has received any investigational drug or experimental procedure within 90 days or 5 half-lives, whichever is longer, prior to study intervention administration.
4. Participant requires treatment with an anti-inflammatory drug during the study period. Paracetamol will be permitted for use as an antipyretic and/or analgesic (maximum of 4 grams/day in any 24 hour period).
5. Participant has an active infection (e.g. sepsis, pneumonia, abscess) or has had an infection requiring antibiotic treatment within 6 weeks prior to Investigational Medicinal Product (IMP) administration. When in doubt, the investigator should confer with the Sponsor study physician.

6. Participant has renal or liver impairment, defined as:

   1. For healthy volunteers: i. For women, serum creatinine level ≥ 125 μmol/L; for men, ≥ 135 μmol/L, or ii. Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) ≥ 1.5 x upper limit of normal (ULN), or iii. Alkaline phosphatase (ALP) and/or bilirubin > 1.5 x ULN
   2. For participants with mild to moderate atopic dermatitis or psoriasis: i. For women, serum creatinine level ≥ 125 μmol/L; for men, ≥ 135 μmol/L, or ii. ALT or AST > 2 x ULN and/or bilirubin > 1.5 x ULN

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Sequential Assignment
• Masking: Double

Number of Arms

10

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Other: Cohort 1; 12 healthy volunteers; 8 on EDP1815, 4 on placebo. Dose=1/10th of HED, capsule, once daily, 15 days	Drug: Placebo oral capsule; Placebo; Drug: EDP1815; EDP1815 is an orally administered monoclonal microbial
Other: Cohort 2; 12 healthy volunteers; 8 on EDP1815, 4 on placebo. Dose= 1 x HED, capsule, once daily, 15 days	Drug: Placebo oral capsule; Placebo; Drug: EDP1815; EDP1815 is an orally administered monoclonal microbial
Other: Cohort 3; 12 subjects with mild to moderate psoriasis; 8 on EDP1815, 4 on placebo. Dose= 1 x HED, capsule, once daily, 29 days	Drug: Placebo oral capsule; Placebo; Drug: EDP1815; EDP1815 is an orally administered monoclonal microbial
Other: Cohort 4; 24 subjects with mild to moderate psoriasis; 16 on EDP1815, 8 on placebo. Dose= 5 x HED capsule, once daily, 29 days	Drug: Placebo oral capsule; Placebo; Drug: EDP1815; EDP1815 is an orally administered monoclonal microbial
Other: Cohort 5; 24 subjects with mild to moderate atopic dermatitis; 16 on EDP1815, 8 on placebo. Dose= 5 x HED, mini-tablets in capsule, once daily, 29 days	Drug: Placebo oral capsule; Placebo; Drug: EDP1815; EDP1815 is an orally administered monoclonal microbial
Other: Cohort 6; 24 subjects with mild to moderate psoriasis; 16 on EDP1815, 8 on placebo. Dose=5 x HED, mini-tablets in capsule, once daily, 29 days.	Drug: Placebo oral capsule; Placebo; Drug: EDP1815; EDP1815 is an orally administered monoclonal microbial
Other: Cohort 7; 24 subjects with mild to moderate atopic dermatitis; 16 on EDP1815, 8 on placebo. Dose= 5 x HED, capsule, once daily, 56 days	Drug: Placebo oral capsule; Placebo; Drug: EDP1815; EDP1815 is an orally administered monoclonal microbial
Other: Cohort 8; 24 subjects with mild to moderate psoriasis; 16 on EDP1815, 8 on placebo. Dose= 8 x HED, tablet, once daily, 56 days	Drug: Placebo oral tablet; Placebo; Drug: EDP1815; EDP1815 is an orally administered monoclonal microbial
Other: Cohort 9; 24 subjects with mild to moderate psoriasis; 16 on EDP1815, 8 on placebo. Dose= 2 x HED, capsule, once daily, 56 days	Drug: Placebo oral capsule; Placebo; Drug: EDP1815; EDP1815 is an orally administered monoclonal microbial
Other: Cohort 10; 24 subjects with mild to moderate atopic dermatitis; 16 on EDP1815, 8 on placebo. Dose= 4 x HED, capsule, once daily, 56 days	Drug: Placebo oral capsule; Placebo; Drug: EDP1815; EDP1815 is an orally administered monoclonal microbial

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Safety and tolerability measured through Adverse Events (AEs)	Number of participants with AEs by seriousness and relationship to treatment	Day 1 to Day 70
Safety and tolerability measured through lab measurements	Number of participants with clinically significant change from baseline (Day 0) in laboratory values	Day 0 to Day 70
Safety and tolerability measured through ECG	Number of participants with clinically relevant changes from baseline (Day 0) ECG parameters	Day 0 to Day 70
Safety and tolerability measured through physical examination	Physical examination of stool samples based on the Bristol Stool Scale (Types 3 and 4 are ideal stool): Type 1: Separate hard lumps, like nuts (hard to pass); Type 2: Sausage-shaped, but lumpy; Type 3: Like a sausage but with cracks on its surface; Type 4: Like a sausage or snake, smooth and soft; Type 5: Soft blobs with clear cut edges (easy to pass); Type 6: Fluffy pieces with ragged edges, a mushy stool; Type 7: Watery, no solid pieces, entirely liquid	Day 0 to Day 60
GI safety measurement through biomarker analysis	GI safety measurement through fecal calprotectin analysis	Day 0 to Day 60

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Clinical improvement in subjects with mild to moderate psoriasis	Change from baseline (Day 0) Psoriasis-area-and-severity index score (PASI) in response to EDP1815, measured on a scale of 0 to 6 (where 0 is most favorable and 6 is least favorable).	Day 0 to Day 70
Clinical improvement in subjects with mild to moderate atopic dermatitis	Change from baseline (Day 0) Eczema-area-and-severity index score (EASI) in response to EDP1815, measured on a scale of 0 to 6 (where 0 is most favorable and 6 is least favorable).	Day 0 to Day 70

Collaborators and Investigators

• Sponsor: Evelo Biosciences, Inc.
• Investigators: Study Director: Duncan McHale, MD, PhD, Evelo Biosciences, Inc.

Study record dates

Study Major Dates

• Study Start (Actual): November 19, 2018
• Primary Completion (Actual): October 29, 2021
• Study Completion (Actual): October 29, 2021

Study Registration Dates

• First Submitted: November 5, 2018
• First Submitted That Met QC Criteria: November 5, 2018
• First Posted (Actual): November 7, 2018

Study Record Updates

• Last Update Posted (Actual): January 10, 2022
• Last Update Submitted That Met QC Criteria: January 6, 2022
• Last Verified: January 1, 2022

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Skin Diseases; Immune System Diseases; Hypersensitivity, Immediate; Genetic Diseases, Inborn; Skin Diseases, Genetic; Skin Diseases, Papulosquamous; Hypersensitivity; Skin Diseases, Eczematous; Psoriasis; Dermatitis; Eczema; Dermatitis, Atopic
• Other Study ID Numbers: EDP1815-101; 2018-002807-32 (EudraCT Number)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: No

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No