804 First-in-Human Xenotransplantation US-FDA-Clinical Trials - Complete Wound Closure of Mixed-Depth Burns via Porcine Skin Xenotransplant

Abstract Introduction Currently there is no treatment than can provide complete and durable wound closure of mixed-depth burn injuries, other than intact human skin, which has several drawbacks. An alternative would be a significant advancement in burn care and a meaningful benefit to patient care. We report here the results of the first-in-human, US-FDA xenotransplantation clinical trial: the use of skin xenotransplants containing live (i.e., non-terminally sterilized, non-xenograft) epidermal and dermal tissues derived from genetically altered, pathogen-free porcine donors to provide complete and durable wound closure of mixed-depth burn wounds. Methods 22 patients with mixed-depth burn wounds were enrolled in Phase 1/2/2b US-FDA clinical trials to evaluate the safety and efficacy of skin xenotransplants to provide complete and durable wound closure in a side-by-side comparison with human allograft. Results To date, there have been zero adverse events including any xeno-related pathologies. In all patients, complete and durable wound closure was demonstrated at all xeno-treatment sites. In 3 cases, mixed-depth burns treated with the skin xenotransplant did not require autografting. Conclusions These clinical data demonstrate the ability of a live, genetically altered skin xenotransplant to facilitate complete and durable wound closure in mixed-depth burn wounds, and that the use of skin xenotransplants may potentially reduce the need for autografting in the treatment of mixed-depth burns. These claims will be evaluated in a US-FDA Phase 3 clinical trial. Applicability of Research to Practice First-in-Human Xenotransplant; Complete, Durable Wound Closure of Mixed, Depth, Full-Thickness Burn Wounds.