A Phase 3b Study for the Treatment of Dystrophic Epidermolysis Bullosa (DEB) in New and Previously EB-101 Treated Patients

To evaluate and further characterize the safety of EB-101 (LZRSE-Col7A1 gene-corrected keratinocyte sheets with type VII collagen \[C7\] expression) for the treatment of large, chronic DEB wounds in new and previously EB-101 treated patients 12 months and older.

A multicenter, open-label, single-arm Phase 3b safety study of one-time surgical application of up to 12 autologous, LZRSE-Col7A1 gene-corrected keratinocyte sheets with C7 expression (EB-101) for the treatment of large, chronic DEB wounds in each of approximately 10-12 patients. Patients enrolled will also contribute biopsies to support manufacturing requirements. All patients will be followed through 24 weeks post-treatment. Patients will be evaluated at their Screening Visit (D -60 to D -25), a phone call approximately 14 days after screening, and at Baseline (Day -1) prior to treatment on Day 0. Patients will remain in the hospital, or other suitable inpatient medical facility that will allow appropriate immobilization of treated wounds, as determined by the Investigator, for observation for up to 7 days (±2 days) following treatment. They will be evaluated by phone on Day 14; by telehealth visits on Weeks 4, 8, and 18; and by clinic visits on Weeks 12 and 24.