Recent Updates
Recently added Catalysts

D-Fi

Phase 3

Dystrophic Epidermolysis Bullosa | Monoclonal antibody | Dermatology |Castle Biosciences, Inc.|Last Updated: Mar 13, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
Premium
Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
Premium
Trial Design
UNCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment32
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06892639Evaluation of D-Fi for the Treatment of Wounds Due to DEBPHASE3 ACTIVE NOT_RECRUITING 32Mar 27, 2025Feb 1, 2042Mar 13, 20264 United States
Unlock Drug Trial Details
Study Endpoints
Primary Endpoints
The difference in Complete (100%) Wound Closure of the Target Wound Pair at either Week 22 (Visit 6), and Week 24 (Visit 7) or at Week 24 (Visit 7) and Week 26 (Visit 8) as assessed by a Blinded Assessor.
Week 26
Unlock Study Endpoints
Study Design & Arms
AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
D-Fi COL7A1 Genetically-Corrected Autologous FibroblastsEXPERIMENTALIntra-subject randomized (paired wounds in each subject receive experimental treatment, D-Fi, or remain untreated). One target wound pair will be identified for each subject. Following pairing, target wounds will be randomly assigned as the treatment wound (D-Fi is administered) or control wound. Subjects will receive intradermal injections of D-Fi in each specified treatment wound in two or more treatment sessions. The first treatment session occurs at Day 1, the second at Week 8/Month 2 and the third at Week 16/Month 4. Additional treatment sessions may occur at Week 26/Month 6, Week 32/Month 8 and Week 40/Month 10 when unclosed treatment wounds may be re-treated, and unclosed control wounds may be treated.
Interventions
NameTypeDescription
D-FiBIOLOGICALD-Fi is composed of fibroblasts isolated from the subject's skin biopsies which are genetically corrected with the full length COL7A1 gene encoding for type VII collagen.
Unlock Study Design Details
Eligibility Criteria
Age Range2 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites4

Inclusion Criteria: * Male or female ≥2 years of age at the Screening visit * Clinical diagnosis of DEB with confirmation of COL7A1 genetic mutation. Exclusion Criteria: * Medical instability limiting ability to travel to the investigative site. * Active infection with human immunodeficiency viru...

Countries:United States
Unlock Eligibility Criteria
Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT06892639primaryCompletionDate: changed
LOWMay 24, 2026NCT06892639studyFirstPostDate: changed