Phase 2 Study of TCP-25 Gel for Treating Epidermolysis Bullosa Including Dystrophic and Junctional Types
Led by Xinnate AB · Updated on 2026-08-12
32
Participants Needed
10
Research Sites
N/A
Total Duration
AI-Summary
What this Trial Is About
Researchers are evaluating the efficacy, safety, and tolerability of a topical gel called TCP-25 in patients diagnosed with two types of Epidermolysis Bullosa, specifically Dystrophic and Junctional forms. This Phase 2, double-blind, randomized, vehicle-controlled study uses a design where matching wounds on the same patient are treated with either TCP-25 gel or a placebo gel to compare effects directly.
Participants will undergo a Treatment Period lasting 56 days, during which they will apply either TCP-25 gel or placebo gel locally on designated wounds. Study visits occur every two weeks at baseline Day 1, and on Days 14, 28, 42, and 56. After treatment, a Safety Follow-up via telephone or video call is conducted approximately two weeks post last dose. Wound assessments include 3D digital photography and software measurements taken at all scheduled visits.
During the study, participants will have evaluations for wound healing, safety, tolerability, and pharmacokinetics. Clinicians capture detailed images of wounds to measure open wound area and monitor changes. Pain levels, treatment-related local reactions, vital signs, and adverse events are regularly assessed. The total participation time includes screening, 56 days of treatment with five clinic visits, and a follow-up call about two weeks after treatment ends.
CONDITIONS
Brief Title
A Phase 2 Study of TCP-25 Gel in Patients With Epidermolysis Bullosa, STEP-study
Research Team
H
Head of Clinical Development
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This table compares participation in this trial with other options available for this condition. The information is drawn from published research and the trial’s study details and is provided for educational purposes only.
Factors
TCP-25 gel (topical drug)
Vehicle gel (placebo comparator)
What it is
A topical gel containing TCP-25, an investigational peptide intended for wound healing in Epidermolysis Bullosa (DEB or JEB).
A topical gel identical in formulation to TCP-25 gel but without the active peptide, used as placebo comparator.
Role in trial
Intervention arm; patients receive TCP-25 gel applied to index wounds.
Comparator arm; patients receive placebo (vehicle) gel applied to index wounds.
Primary use
Investigated as a topical therapy for wound healing in DEB or JEB patients.
Serves as placebo control, matching TCP-25 gel without active peptide.
How it is given or performed
Gel applied topically to index wounds according to study schedule.
Vehicle gel applied topically to index wounds as per study schedule.
Evidence status
No published patient outcome data for TCP-25 gel in DEB or JEB at the time of registry listing. Phase 1 results in healthy volunteers demonstrated local safety and tolerability, supporting progression to patient studies.
Vehicle gel, without active peptide, is not intended to promote wound healing beyond basic moisture and protection.
Important limitations
Clinical effectiveness and safety of TCP-25 gel in patients with DEB/JEB is not yet established. Current data comes from an ongoing phase 2 trial and earlier healthy volunteer safety studies.
As an inert placebo, performs as a moisture-protecting gel but does not treat or heal wounds. Limitation inherent to placebo control.
Disclaimer: This comparison is created with the help of artificial intelligence(AI) and may contain errors or missing information. It is not medical advice and does not mean one option is better or safer than another. Clinical trials are still being studied, and joining a trial is your choice. Please consult your healthcare professional before making any decisions.
Who Can Participate
Age: 4Years +
All Genders
Eligibility Criteria
You may qualify if you...
Male or female patients with documented diagnosis of Dystrophic Epidermolysis Bullosa or Junctional Epidermolysis Bullosa confirmed by genetic testing or skin biopsy
Patients aged 4 years or older
Enrollment initially open to patients 12 years and older, with expansion to ages 4 to 11 after safety review
You will not qualify if you...
Diagnosis of any Epidermolysis Bullosa subtype other than Dystrophic or Junctional
Current or planned treatment with systemic antibiotics (except stable preventive or anti-inflammatory antibiotic regimen for at least 6 weeks before baseline)
Use of topical antibiotics on index wounds within 7 days before baseline
Use of systemic corticosteroids above 0.2 mg/kg prednisone equivalent per day within 30 days before screening
Use of topical corticosteroids on index wounds within 7 days before screening
History or current malignancy over the index wound such as basal or squamous cell carcinoma
Your Study Journey
Screening
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
Treatment
Duration - 56 days
Participants apply either TCP-25 gel or placebo gel to designated wounds. Scheduled visits occur every 2 weeks on Day 1, 14, 28, 42, and 56 for assessments and wound measurements.
5 visits
Safety Follow-up
Duration - About 2 weeks
Participants receive a safety follow-up via telephone or video call approximately 14 days after the last treatment dose to monitor any ongoing effects.
1 remote visit
How is the study designed?
Study Type
INTERVENTIONAL
Masking
QUADRUPLE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
TREATMENT
Number of Arms
2
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Published Research Related To This Trial
Study protocol for a phase 1, randomised, double-blind, placebo-controlled study to investigate the safety, tolerability and pharmacokinetics of ascending topical doses of TCP-25 applied to epidermal suction blister wounds in healthy male and female volunteers.