Frontlight ResearchEarly access
Taking people in United StatesPhase 2
A Phase 2 Study of TCP-25 Gel in Patients With Epidermolysis Bullosa, STEP-study
Key facts
- Who runs it
- Xinnate AB
- Where
- Cincinnati, United StatesSee the siteAlso in 6 other countries, 12 sites
- Trial code
- Status
- Recruiting
- Phase
- Phase 2
- People taking part
- 32 people, planned
- Started
- 30 Jan 2026
- Expected to end
- 30 Jun 2027
- Type of study
- Interventional, 2 groupsOne group gets a placebo (a dummy treatment), for comparison.
- Treatments tested
- TCP-25 gel
- Vehicle (placebo)
- Record updated
- 2 November 2026
Who can take part
- Age
- 4 years and older
- Sex
- Women and men
- Healthy volunteers
- Cannot take part
The registry criteria, word for word
Show all 6 criteriaShow less
Who can take part
- Male or female patients with documented diagnosis of DEB or JEB, confirmed by genetic testing and/or by a skin biopsy with immunofluorescence mapping
- Patients ≥4 years old. Note: Initially, patients ≥12 years will be enrolled. Enrollment will be open to 4 to 11 year old pediatric patients (both inclusive), after a DMC reviews and provides a positive opinion regarding the safety and tolerability of the IMP in at least 3 patients 12 to 18 years old who have completed at least 4 weeks of IMP use
Who cannot take part
- The patient is currently being treated or planned to be treated with systemic antibiotics; Note: Use of preventive and/or anti-inflammatory antibiotic treatment, including doxycycline, on an established treatment regimen (stable dose for ≥6 weeks before the Baseline Visit) is permitted. Use of topical antibiotics on the index wounds within 7 days before the Baseline Visit is prohibited
- Use of systemic corticosteroids \>0.2 mg/kg prednisone dose equivalent per day within 30 days or use of topical corticosteroids on index wounds within 7 days before the Screening Visit; Note: Corticosteroids for inhalation, ophthalmic, or intranasal use are permitted
- The patient has a history of or current malignancy over the index wound, eg, basal cell carcinoma or squamous cell carcinoma
- The patient has any subtype of EB other than DEB or JEB
Where in United States
Also in 6 other countries, 12 sites
- Cincinnati Children's Hospital Medical CenterCincinnati, United StatesContact: Dr. Kalyani Marathe, PI, MDTaking people
About the trial
What the trial wants to find out
This is a Phase 2, double-blind, randomized, vehicle-controlled study designed to evaluate efficacy, safety, and tolerability of topically applied TCP-25 gel in patients with confirmed DEB or JEB. The study will implement intrasubject randomization, ie, a pair of matching index wounds will be randomly assigned to be treated with a local application of either TCP 25 gel or vehicle gel.
The 2 groups in the trial
- TCP-25Treatment being tested
Topical gel
Treatment: TCP-25 gel
- VehiclePlacebo, for comparison
Placebo gel
Treatment: Vehicle (placebo)
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Contact the study team: see the registry record → Contacts and Locations
Print a page for my doctorData and sources
- Registry record
- Listed on ClinicalTrials.gov.
- Official title
- A Randomized, Double-blind, Vehicle-controlled Phase 2 Study to Evaluate Efficacy, Safety, and Tolerability of Topically Applied TCP-25 in Patients With Epidermolysis Bullosa
- Record updated
- 2 November 2026