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Ebens CL, McGrath JA, Riedl JA, Keith AR, Lilja G, Rusch S, Keene DR, Tufa SF, Riddle MJ, Shanley R, Van Heest AE, Tolar J. Immune tolerance of allogeneic haematopoietic cell transplantation supports donor epidermal grafting of recessive dystrophic epidermolysis bullosa chronic wounds. Br J Dermatol 2020; 184:1161-1169. [PMID: 32866988 DOI: 10.1111/bjd.19503] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/24/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND Chronic wounds, a common morbidity in recessive dystrophic epidermolysis bullosa (RDEB), lack definitive therapies. OBJECTIVES To assess allogeneic epidermal skin grafts in terms of wound healing and durability over time. METHODS In a prospective, open-label clinical trial for postallogeneic haematopoietic cell transplantation (post-alloHCT) patients with RDEB, up to nine chronic wounds per patient were grafted over 1 year. Epidermal grafts measuring 5 cm2 were obtained from related alloHCT donors in the outpatient setting using the CELLUTOMETM Epidermal Harvesting System. Wounds were photographed and symptom inventories completed at baseline and 6, 12 and 52 weeks after grafting. The trial was registered at ClinicalTrials.gov (NCT02670837). RESULTS Between August 2016 and January 2019, eight patients with RDEB received a total of 35 epidermal allografts at a median of 1157 days (range 548-2884) post-alloHCT. The median (interquartile range) percentage reductions in wound surface area were 75% (52-94), 95% (72-100) and 100% (97-100) at 6, 12 and 52 weeks postgraft, respectively, each significantly reduced from baseline (P < 0·001). Donor harvest sites healed quickly without scarring. Biopsy evaluation at 1 year of an epidermal allograft site revealed wildtype type VII collagen (immunofluorescence), anchoring fibrils (electron microscopy), and full-thickness skin whole-DNA donor chimerism of 42% (compared with 16% in concurrently biopsied native skin). This strategy subsequently supported release of RDEB pseudosyndactyly. CONCLUSIONS The immune tolerance established by alloHCT supports successful adoptive transfer of donor epidermal grafts. Persistence of donor grafts in a single patient beyond 1 year and observed migration of donor-grafted cells into adjacent wound suggest that epidermal allografts include nonterminally differentiated cells and/or trigger recruitment of donor bone-marrow-derived cells to mediate wound healing.
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Affiliation(s)
- C L Ebens
- Division of Blood and Marrow Transplantation, Department of Pediatrics, Medical School, University of Minnesota, Minneapolis, MN, USA
| | - J A McGrath
- St John's Institute of Dermatology, King's College London, London, England
| | - J A Riedl
- Department of Microbiology, Immunology, and Cancer Biology, University of Minnesota, Minneapolis, MN, USA
| | - A R Keith
- Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, MN, USA
| | - G Lilja
- Division of Blood and Marrow Transplantation, Department of Pediatrics, Medical School, University of Minnesota, Minneapolis, MN, USA
| | - S Rusch
- Division of Blood and Marrow Transplantation, Department of Pediatrics, Medical School, University of Minnesota, Minneapolis, MN, USA
| | - D R Keene
- Microimaging Center, Shriners Hospital for Children, Portland, OR, USA
| | - S F Tufa
- Microimaging Center, Shriners Hospital for Children, Portland, OR, USA
| | - M J Riddle
- Division of Blood and Marrow Transplantation, Department of Pediatrics, Medical School, University of Minnesota, Minneapolis, MN, USA
| | - R Shanley
- Biostatistics Core, Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA
| | - A E Van Heest
- Department of Orthopaedic Surgery, University of Minnesota, Minneapolis, MN, USA
| | - J Tolar
- Division of Blood and Marrow Transplantation, Department of Pediatrics, Medical School, University of Minnesota, Minneapolis, MN, USA
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Mellerio JE, Robertson SJ, Bernardis C, Diem A, Fine JD, George R, Goldberg D, Halmos GB, Harries M, Jonkman MF, Lucky A, Martinez AE, Maubec E, Morris S, Murrell DF, Palisson F, Pillay EI, Robson A, Salas-Alanis JC, McGrath JA. Management of cutaneous squamous cell carcinoma in patients with epidermolysis bullosa: best clinical practice guidelines. Br J Dermatol 2015; 174:56-67. [PMID: 26302137 DOI: 10.1111/bjd.14104] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/13/2015] [Indexed: 12/24/2022]
Abstract
This article summarizes recommendations reached following a systematic literature review and expert consensus on the diagnosis and management of cutaneous squamous cell carcinomas in people with epidermolysis bullosa. The guidelines are intended to help inform decision making by clinicians dealing with this complex complication of a devastating disease.
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Affiliation(s)
- J E Mellerio
- St John's Institute of Dermatology, Guy's and St Thomas' NHS Foundation Trust, Westminster Bridge Road, London, SE1 7EH, U.K.,Department of Dermatology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, U.K
| | - S J Robertson
- Department of Dermatology, The Royal Melbourne Hospital, The Royal Children's Hospital and Monash Medical Centre, Melbourne, Australia
| | - C Bernardis
- Department of Plastic Surgery, Guy's and St Thomas' NHS Foundation Trust, Westminster Bridge Road, London, SE1 7EH, U.K
| | - A Diem
- Department of Dermatology, Paracelsus Medical University, Salzburg, Austria
| | - J D Fine
- Division of Dermatology, Vanderbilt University School of Medicine, Nashville, TN, U.S.A
| | - R George
- Department of Palliative Care, Guy's and St Thomas' NHS Foundation Trust, Westminster Bridge Road, London, SE1 7EH, U.K
| | - D Goldberg
- Division of Dermatology, University of Massachusetts, Worcester, MA, U.S.A
| | - G B Halmos
- Department of Otorhinolaryngology, Head and Neck Surgery, University Medical Centre Groningen, Groningen, the Netherlands
| | - M Harries
- Department of Oncology, Guy's and St Thomas' NHS Foundation Trust, Westminster Bridge Road, London, SE1 7EH, U.K
| | - M F Jonkman
- Department of Dermatology, University Medical Centre Groningen, Groningen, the Netherlands
| | - A Lucky
- Department of Dermatology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, U.S.A
| | - A E Martinez
- Department of Dermatology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, U.K
| | - E Maubec
- Department of Dermatology, APHP, Avicenne Hospital, Bobigny, France
| | - S Morris
- Department of Oncology, Guy's and St Thomas' NHS Foundation Trust, Westminster Bridge Road, London, SE1 7EH, U.K
| | - D F Murrell
- Department of Dermatology, St George Hospital, University of New South Wales, Sydney, Australia
| | - F Palisson
- Facultad de Medicina, Clínica Alemana, Santiago, Chile
| | - E I Pillay
- St John's Institute of Dermatology, Guy's and St Thomas' NHS Foundation Trust, Westminster Bridge Road, London, SE1 7EH, U.K
| | - A Robson
- Department of Dermatopathology, Guy's and St Thomas' NHS Foundation Trust, Westminster Bridge Road, London, SE1 7EH, U.K
| | - J C Salas-Alanis
- Basic Sciences Department, Universidad de Monterrey, Monterrey, Mexico
| | - J A McGrath
- St John's Institute of Dermatology, King's College London (Guy's Campus), London, U.K
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Abstract
PURPOSE OF REVIEW This review highlights key findings, both clinical and basic, that have been published in the field of inherited epidermolysis bullosa within the past few years. RECENT FINDINGS New epidermolysis bullosa phenotypes, genotypes and modes of transmission have been identified, resulting in a revised classification system. Detailed evidence-based data are now available on the risk of extracutaneous complications in each of the major epidermolysis bullosa subtypes. Studies are now underway to try to better explain the biological aggressiveness of squamous cell carcinomas arising in epidermolysis bullosa skin. Cell and animal models have been refined and used to ascertain the feasibility of gene replacement therapy, stem cell transplantation, and treatment with injected allogeneic fibroblasts or recombinant type VII collagen. As a result, clinical trials are now being pursued to test each of these in humans. SUMMARY Epidermolysis bullosa is caused by mutations in at least 14 genes, leading to a broad spectrum of entities, each of which has its own relative risk for the development of specific extracutaneous complications and/or premature death. Intensive research, both basic and clinical, is bringing us closer to more effective treatments and possibly even a cure.
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