Evaluation of D-Fi for the Treatment of Wounds Due to DEB

CCB-EB-304 is a multi-center, intra-patient randomized and controlled, open-label, rater-blinded Phase 3 study of D-Fi for the treatment of persistent non-healing and recurrent DEB wounds in approximately 32 subjects. Each subject will serve as his/her own control. Each subject's target wounds will be paired then randomized to receive D-Fi (treatment wound) or remain untreated (control wound). One target wound pair will be identified for each subject.

Subjects will receive intradermal injections of D-Fi in each specified treatment wound in three 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 and Week 32/Month 8 and Week 40/Month 10 when unclosed treatment wounds may be re-treated, and unclosed control wounds may be treated. Safety and efficacy assessments will occur at scheduled intervals through Week 48/Month 12, when the treatment period is completed, and a long-term safety follow-up period (through 15 years) commences for subjects who have received one or more D-Fi injections.