NCT06423573 · Chiesi Farmaceutici S.p.A.
A Study to Assess the Incidence of Skin Cancers in Patients With Epidermolysis Bullosa Receiving Filsuvez
(FOSteR)
What this study is about
In patients with epidermolysis bullosa (EB), collagen does not form properly, so their skin is very fragile and blisters easily. Such patients are also at greatly increased risk of developing skin cancers. Filsuvez is a topical gel used to promote healing of skin lesions in patients with certain types of EB.
View original scientific description
In patients with epidermolysis bullosa (EB), collagen does not form properly, so their skin is very fragile and blisters easily. Such patients are also at greatly increased risk of developing skin cancers. Filsuvez is a topical gel used to promote healing of skin lesions in patients with certain types of EB. In this observational study, patients with either dystrophic EB (DEB) or junctional EB (JEB) will receive standard of care treatment, whether Filsuvez or something else, and will be followed for a minimum of 3 years. The main purpose is to see if the use of Filsuvez affects the likelihood of developing skin malignancies in these patient populations.
Interventions
DRUG
Filsuvez
Topical gel
Primary outcome measures
Incidence of first skin malignancy during follow-up in EB patients receiving Filsuvez
Time frame: Minimum 3 years
Patients being treated with Filsuvez will be followed for occurrence of skin malignancies from the date of study enrolment until either the date of discontinuation (withdrawal of consent, withdrawal from the site or registry, physician decision, death, or lost to follow-up) or termination of the study
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Patients with a confirmed diagnosis of dystrophic EB or junctional EB
Where
- Palo Alto, California
- Aurora, Colorado
- Gainesville, Florida
- Cincinnati, Ohio
- Philadelphia, Pennsylvania
- Charleston, South Carolina
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Sep 28, 2026 · Source of record for eligibility and locations