NCT05470114

Brief Summary

This clinical trial will investigate the effectiveness and safety of a new active ingredient (LEO 138559) in the treatment of moderate to severe atopic dermatitis (AD). It is given by subcutaneous injection. Some people in the trial will instead receive Dupixent® which is an approved treatment for moderate to severe AD. Dupixent® is also given by subcutaneous injection. The main aim of this clinical trial is to investigate which changes in biomarkers in the skin are caused by LEO 138559 and Dupixent®. The trial includes a screening phase of up to 4 weeks, followed by a treatment period of 16 weeks, and a safety follow-up period of 16 weeks.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
13

participants targeted

Target at below P25 for phase_2

Timeline
Completed

Started May 2022

Shorter than P25 for phase_2

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

May 19, 2022

Completed
Same day until next milestone

Study Start

First participant enrolled

May 19, 2022

Completed
2 months until next milestone

First Posted

Study publicly available on registry

July 22, 2022

Completed
11 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 7, 2023

Completed
4 months until next milestone

Study Completion

Last participant's last visit for all outcomes

October 9, 2023

Completed
1.4 years until next milestone

Results Posted

Study results publicly available

February 14, 2025

Completed
Last Updated

March 11, 2025

Status Verified

November 1, 2024

Enrollment Period

1.1 years

First QC Date

May 19, 2022

Results QC Date

October 9, 2024

Last Update Submit

February 21, 2025

Conditions

Outcome Measures

Primary Outcomes (1)

  • Change in Gene Expression Typically Associated With Atopic Dermatitis in Lesional Skin Biopsies From Baseline to Week 4

    Lesional skin biopsies will be evaluated by single cell RNA sequencing to evaluate global gene expression

    From baseline to week 4

Secondary Outcomes (1)

  • Number of Treatment-emergent Adverse Events From Baseline to Week 16 Per Subject

    Between baseline and week 16

Study Arms (2)

LEO 138559

EXPERIMENTAL

Participants received injections of LEO 138559 from Week 0 (baseline) to Week 16 (end of treatment).

Drug: LEO 138559

Dupixent®

ACTIVE COMPARATOR

Participants received injections of Dupixent® from Week 0 (baseline) to Week 16 (end of treatment).

Drug: Dupixent®

Interventions

LEO 138559 is an antibody given by subcutaneous injection.

LEO 138559

Dupixent® is an antibody given by subcutaneous injection.

Dupixent®

Eligibility Criteria

Age18 Years - 64 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64)

You may qualify if:

  • Diagnosis of AD \[as defined by the American Academy of Dermatology (AAD) Consensus Criteria\] that has been present for ≥1 year prior to screening.
  • Subjects who have a recent history (within 6 months before screening) of inadequate response to treatment with topical medication, or for whom topical treatments are otherwise medically inadvisable.
  • EASI score ≥12 at screening and ≥16 at baseline.
  • vIGA-AD score ≥3 at screening and baseline.
  • Body surface area (BSA) of AD involvement ≥10% at screening and baseline.
  • Worst Daily Pruritus NRS (weekly average) of ≥3 points at baseline.

You may not qualify if:

  • Treatment with systemic immunosuppressive/immunomodulating medication (excluding systemic antihistamines if taken at stable dose already before baseline), e.g., JAK inhibitors, immunoglobulin/blood products, or phototherapy within 4 weeks or 5 half-lives prior to baseline, whichever is longer.
  • Treatment with systemic corticosteroids within 4 weeks prior to baseline (NOTE: Inhaled or intranasal steroids equivalent to doses including and up to 500 µg beclometasone (or equivalent) daily is allowed).
  • Treatment with biologics within 5 half-lives (if known) or 16 weeks prior to baseline, whichever is longer.
  • Treatment with TCS, TCI, or topical PDE-4 inhibitor within 1 week prior to baseline (NOTE: Patient may be rescreened (one time) if failed for this criterion.
  • Intake of nonsteroidal anti-inflammatory drugs (NSAIDs) within 1 week prior to baseline. Intake of paracetamol will be allowed.
  • Treatment with a live (attenuated) vaccine within 12 weeks prior to baseline.
  • Clinically significant active chronic or acute infection requiring systemic treatment within 4 weeks prior to baseline that may compromise the safety of the subject.
  • Clinically significant abnormalities detected on vital signs or ECG (apart from 1st degree atrioventricular (AV) block that is allowed).
  • Serious heart conditions, chronic lung diseases.
  • Acute asthma, acute bronchospasm, moderate to severe asthma.
  • Skin infection within 1 week prior to the baseline visit.
  • Presence of hepatitis B or C infection at screening.
  • Active inflammatory bowel disease (IBD) or history of IBD, anaphylaxis, immune complex disease, pancreatic disease, zoster infections, viral skin infections (including eczema herpeticum) or known or suspected history of immunosuppressive disorder.
  • History of human immunodeficiency virus (HIV) infection or positive HIV serology at screening.
  • Subject has a positive test for tuberculosis at screening.
  • +1 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

LEO Investigational Site

Vienna, 1090, Austria

Location

MeSH Terms

Conditions

Dermatitis, Atopic

Interventions

dupilumab

Condition Hierarchy (Ancestors)

Skin Diseases, GeneticGenetic Diseases, InbornCongenital, Hereditary, and Neonatal Diseases and AbnormalitiesDermatitisSkin DiseasesSkin and Connective Tissue DiseasesSkin Diseases, EczematousHypersensitivity, ImmediateHypersensitivityImmune System Diseases

Results Point of Contact

Title
Clinical Disclosure
Organization
Leo Pharma

Study Officials

  • Medical Expert

    LEO Pharma

    STUDY DIRECTOR

Publication Agreements

PI is Sponsor Employee
No
Restriction Type
OTHER
Restrictive Agreement
Yes

Study Design

Study Type
interventional
Phase
phase 2
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, INVESTIGATOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

May 19, 2022

First Posted

July 22, 2022

Study Start

May 19, 2022

Primary Completion

June 7, 2023

Study Completion

October 9, 2023

Last Updated

March 11, 2025

Results First Posted

February 14, 2025

Record last verified: 2024-11

Data Sharing

IPD Sharing
Will not share

Locations