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Long-Term Follow-up Protocol
NCT04917887 · View on ClinicalTrials.gov ↗
Study Summary
The main objective of this prospective, observational, long-term follow-up (LTFU) study is to evaluate the long-term safety profile of the gene therapy products evaluated by Krystal Biotech, Inc. which have a shared backbone of HSV-1, in participants who received at least one dose of investigational product (IP).
Conditions Studied
Study Locations (3)
California
- Mission Dermatology Center — Rancho Santa Margarita
- Stanford University — Redwood City
Florida
- Pediatric Skin Research — Coral Gables
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 50 participants |
| Start Date | 2021-05-25 |
| Est. Completion | 2028-05-25 |
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Full Details on ClinicalTrials.gov ↗What the Registry Record Tells You About NCT04917887
The ClinicalTrials.gov registry entry for NCT04917887 describes a study currently listed as recruiting. It is categorized as an unspecified phase, which is the standard way researchers label where a study sits along the investigational pathway from early safety work through later efficacy and post-marketing evaluation. The registered enrollment target is 50 participants, a figure that helps gauge the scale of data the investigators plan to collect. The listed sponsor is Krystal Biotech, which has 66 total studies on file at ClinicalTrials.gov, and sponsors are the parties responsible for study design, oversight, and regulatory filings.
The record links to 3 conditions, with Dystrophic Epidermolysis Bullosa appearing as the primary indexed condition, and to 0 interventions. Interventions can include drugs, devices, procedures, behavioral programs, or observational arms, and each is tracked as a separate registry field so that downstream queries can filter accurately. When a trial lists multiple interventions, it usually reflects a multi-arm design or a comparison protocol rather than a single treatment being tested in isolation. The brief summary published in the registry is the clearest source of protocol intent and should be read before drawing conclusions from any sidebar tags.
Geographic footprint matters for practical reasons: NCT04917887 reports 3 study locations spanning 2 distinct geographic areas — top geographies include California, Florida. A larger site network tends to correlate with broader recruitment capacity, but it does not imply anything about study quality, and site-level enrollment status can diverge from the overall registry status shown above. Every data point on this page comes from the public ClinicalTrials.gov dataset and is reproduced here for reference only; it is not a medical recommendation, an endorsement of the sponsor, or an invitation to enroll. Verify current status, eligibility criteria, and contact details directly at ClinicalTrials.gov, and discuss any participation decision with your own healthcare provider.
Frequently Asked Questions
What is clinical trial NCT04917887 about?
NCT04917887 is a clinical study titled "Long-Term Follow-up Protocol". The main objective of this prospective, observational, long-term follow-up (LTFU) study is to evaluate the long-term safety profile of the gene therapy products evaluated by Krystal Biotech, Inc. which have a shared backbone of HSV-1, in participants who received at least one dose of investigational...
What is the current status of trial NCT04917887?
This trial is currently recruiting. The enrollment target is 50 participants. The study started on 2021-05-25. Estimated completion is 2028-05-25.
What conditions does trial NCT04917887 study?
This clinical trial studies the following conditions: Dystrophic Epidermolysis Bullosa, Recessive Dystrophic Epidermolysis Bullosa, Dominant Dystrophic Epidermolysis Bullosa. These conditions were identified from the trial registry and reflect the primary focus areas of the research.
Who is sponsoring clinical trial NCT04917887?
This trial is sponsored by Krystal Biotech, which has 66 total clinical trials registered on ClinicalTrials.gov. The sponsor is responsible for the study's design, funding, and regulatory compliance.
Where is trial NCT04917887 being conducted?
This trial has 3 study locations across California, Florida. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
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