A 16-week Trial to Investigate the Efficacy and Safety of Delgocitinib Cream 20 mg/g in Adult Participants With Mild to Severe Palmoplantar Pustulosis
A Proof-of-concept Phase 2a, Double-blind, 2-arm Trial to Investigate the Efficacy and Safety of Twice Daily Delgocitinib Cream 20 mg/g Compared With Cream Vehicle During a 16-week Treatment Period in Adult Subjects With Mild to Severe Palmoplantar Pustulosis
3 other identifiers
interventional
135
5 countries
36
Brief Summary
The main objective of the study is to evaluate the efficacy of twice daily applications of delgocitinib cream 20 mg/g compared with cream vehicle in the treatment of adult participants with mild to severe palmoplantar pustulosis (PPP). Total study duration for each participants will be approximately 18 weeks, for an approximate total of 9 visits.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_2
Started Sep 2025
Shorter than P25 for phase_2
36 active sites
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
June 2, 2025
CompletedFirst Posted
Study publicly available on registry
June 10, 2025
CompletedStudy Start
First participant enrolled
September 11, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 14, 2026
ExpectedStudy Completion
Last participant's last visit for all outcomes
December 14, 2026
March 16, 2026
March 1, 2026
1.3 years
June 2, 2025
March 13, 2026
Conditions
Outcome Measures
Primary Outcomes (1)
Number of Participants Achieving at Least 75% Improvement in PPP Area and Severity Index (PPPASI) Score from Baseline (PPPASI-75) at Week 16
Baseline to Week 16
Secondary Outcomes (26)
Number of Participants with PPP-Physician Global Assessment (PGA) Score of 0 or 1 with at Least a 2-step Improvement from Baseline at Week 16
Baseline to Week 16
Change in the Overall Number of Fresh Pustules From Baseline to Week 16
Baseline to Week 16
Number of Participants with a ≥1-point Reduction in PPP-PGA Score From Baseline to Week 16
Baseline to Week 16
Number of Participants with a ≥2-point Reduction in PPP-PGA Score From Baseline to Week 16
Baseline to Week 16
Change in PPPASI Score From Baseline to Week 16
Baseline to Week 16
- +21 more secondary outcomes
Study Arms (2)
Delgocitinib 20 mg/g
EXPERIMENTALParticipants with mild to severe PPP will receive 20 mg/g of delgocitinib cream twice a day for 16 weeks.
Cream Vehicle
PLACEBO COMPARATORParticipants with mild to severe PPP will receive matching vehicle cream twice a day for 16 weeks.
Interventions
Eligibility Criteria
You may qualify if:
- Signed and dated informed consent has been obtained prior to any protocol-related procedures.
- Age 18 years or above at the time of informed consent signing.
- Participant is able to comply with clinic visits and trial requirements and procedures, as assessed by the investigator.
- Diagnosis of PPP in accordance with the consensus diagnostic criteria established by European Rare and Severe Psoriasis Expert Network: primary, persistent (\>3 months duration), sterile, macroscopically visible pustules on the palms and/or soles, with or without plaque psoriasis elsewhere on the body.
- Confirmed PPP by central evaluation of photographs taken at screening.
- Mild to severe PPP current condition defined by:
- Disease duration of PPP of \>6 months before randomisation.
- PPP-PGA of at least mild severity (PPP-PGA ≥2) at screening and baseline.
- PPPASI ≥8 at screening and baseline.
- Presence of ≥5 well-demarcated fresh pustules (white or yellow pustules) in total across all affected areas at screening and baseline.
- Participants with prior experiences of inadequate response with topical corticosteroid(s) (TCS) or for whom TCS are inadvisable, as judged by the investigators.
- A woman of childbearing potential must use an acceptable form of birth control throughout the trial up until the last administration of investigational medicinal product (IMP).
You may not qualify if:
- Presence or known history of drug-induced PPP (e.g., a new onset of PPP or an exacerbation of PPP from beta blockers, calcium channel blockers, lithium, or biologic therapy including infliximab, adalimumab, or etanercept).
- Presence of acrodermatitis continua of Hallopeau.
- Active dermatologic condition that could confound the diagnosis of PPP or interfere with assessment of the IMP, as assessed by the investigator.
- Clinically significant infection on the palms or soles.
- Concurrent plaque psoriasis covering \>5% of body surface area.
- Clinically significant infection within 4 weeks prior to baseline, which, in the opinion of the investigator, may compromise the safety of the participant in the trial, interfere with evaluation of the IMP, or reduce the participant's ability to participate in the trial. Clinically significant infections are defined as:
- A systemic infection.
- A serious skin infection requiring parenteral (intravenous or intramuscular) antibiotics, antiviral, or antifungal medication.
- History of any known primary immunodeficiency disorder, including a positive human immunodeficiency virus test at screening, or the participant taking antiretroviral medications as determined by medical history and/or the participant's verbal report.
- Major surgery within 8 weeks prior to screening or planned in-patient surgery or hospitalisation during the trial period.
- Any documented active or suspected malignancy, or history of malignancy within 5 years prior to screening, except basal cell carcinoma of the skin, localized squamous cell carcinoma of the skin, or in situ carcinoma of the cervix appropriately treated before the baseline visit.
- Any disorder that is not stable and could:
- Affect the safety of the participant throughout the trial.
- Impede the participant's ability to complete the trial. Examples include, but are not limited to, cardiovascular, gastrointestinal, hepatic, renal, neurological, musculoskeletal, infectious, endocrine, metabolic, haematological, immunological, and psychiatric disorders, as well as major physical impairment.
- Any clinically significant abnormal finding occurring during the screening period and/or observed at the baseline visit that may put the participant at risk due to their participation in the trial or could influence the participant's ability to complete the trial.
- +18 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- LEO Pharmalead
Study Sites (36)
LEO Pharma Investigational Site
Fountain Valley, California, 92708, United States
LEO Pharma Investigational Site
Douglasville, Georgia, 30135, United States
LEO Pharma Investigational Site
West Bloomfield, Michigan, 48322, United States
LEO Pharma Investigational Site
Elmhurst, New York, 11373, United States
LEO Pharma Investigation Site
Mayfield Heights, Ohio, 44124, United States
LEO Pharma Investigational Site
Portland, Oregon, 97201, United States
LEO Pharma Investigational Site
Philadelphia, Pennsylvania, 19103, United States
LEO Pharma Investigational Site
Surrey, British Columbia, V3R 6A7, Canada
LEO Pharma Investigational Site
Winnipeg, Manitoba, R3M 3Z4, Canada
LEO Pharma Investigational Site
Fredericton, New Brunswick, E3B 1G9, Canada
LEO Pharma Investigational Site
Hamilton, Ontario, L8L 3C3, Canada
LEO Pharma Investigational Site
Hamilton, Ontario, L8N 1Y2, Canada
LEO Pharma Investigational Site
Markham, Ontario, L3P 1X2, Canada
LEO Pharma Investigational Site
Waterloo, Ontario, N2J 1C4, Canada
LEO Pharma Investigational Site
Montreal, Quebec, H2X 2V1, Canada
LEO Pharma Investigational Site
Bad Bentheim, 48455, Germany
LEO Pharma Investigational Site
Dresden, 01097, Germany
LEO Pharma Investigational Site
Göttingen, 37075, Germany
LEO Pharma Investigational Site
Kiel, 24105, Germany
LEO Pharma Investigational Site
Lübeck, 23562, Germany
LEO Pharma Investigational Site
Manheim, 68167, Germany
LEO Pharma Investigational Site
Münster, 48149, Germany
LEO Pharma Investigational Site
Osnabrück, 49074, Germany
LEO Pharma Investigational Site
Witten, 58453, Germany
LEO Pharma Investigational Site
Bialystok, 15-879, Poland
LEO Pharma Investigational Site
Iwonicz-Zdrój, 38-440, Poland
LEO Pharma Investigational Site
Lodz, 90-436, Poland
LEO Pharma Investigational Site
Lublin, 20-011, Poland
LEO Pharma Investigational Site
Rzeszów, 35-055, Poland
LEO Pharma Investigational Site
Warsaw, 02-482, Poland
LEO Pharma Investigational Site
Wroclaw, 50-556, Poland
LEO Pharma Investigational Site
Wroclaw, 50-566, Poland
LEO Pharma Investigational Site
Bristol, BS2 8HW, United Kingdom
LEO Pharma Investigational Site
London, SE1 9RT, United Kingdom
LEO Pharma Investigational Site
Newcastle upon Tyne, NE1 4LP, United Kingdom
LEO Pharma Investigational Site
Stourbridge, DY8 4JB, United Kingdom
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- STUDY DIRECTOR
Medical Expert
LEO Pharma
Central Study Contacts
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
June 2, 2025
First Posted
June 10, 2025
Study Start
September 11, 2025
Primary Completion (Estimated)
December 14, 2026
Study Completion (Estimated)
December 14, 2026
Last Updated
March 16, 2026
Record last verified: 2026-03
Data Sharing
- IPD Sharing
- Will not share