{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T17:57:28Z","timestamp":1790618248024,"version":"4.1.0"},"reference-count":15,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T00:00:00Z","timestamp":1790553600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"},{"start":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T00:00:00Z","timestamp":1790553600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["eJHaem"],"published-print":{"date-parts":[[2026,10]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Introduction<\/jats:title>\n                    <jats:p>Primary cutaneous peripheral T\u2010cell lymphoma, not otherwise specified (pcPTCL\u2010NOS), is exceptionally rare in children, and evidence guiding diagnosis and treatment is limited.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Case Presentation<\/jats:title>\n                    <jats:p>A 10\u2010year\u2010old boy with pcPTCL\u2010NOS refractory to chemotherapy received mogamulizumab prior to allogeneic haematopoietic stem cell transplantation (allo\u2010HSCT). Despite a 60\u2010day washout period, he developed prolonged steroid\u2010refractory acute graft\u2010versus\u2010host disease requiring ruxolitinib and extracorporeal photopheresis. Concurrently, transient skin lesions developed at previous lymphoma sites and regressed spontaneously, with biopsy supporting the interpretation of visible graft\u2010versus\u2010lymphoma.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>This case underscores the need to optimise allo\u2010HSCT timing after mogamulizumab and preserve graft\u2010versus\u2010lymphoma effect while limiting graft\u2010versus\u2010host disease.<\/jats:p>\n                    <jats:p>\n                      <jats:bold>Trial Registration<\/jats:bold>\n                      : The authors have confirmed clinical trial registration is not needed for this submission.\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/jha2.70403","type":"journal-article","created":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T17:08:42Z","timestamp":1790615322000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Graft\u2010Versus\u2010Tumour Effect Following Allogeneic Haematopoietic Stem Cell Transplantation in a Paediatric Patient With Mogamulizumab\u2010Treated Primary Cutaneous Peripheral T\u2010Cell Lymphoma"],"prefix":"10.1002","volume":"7","author":[{"given":"Maria Ebbesen","family":"S\u00f8rum","sequence":"first","affiliation":[{"name":"Department of Paediatrics and Adolescent Medicine Copenhagen University Hospital Rigshospitalet  Copenhagen Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tania","family":"Masmas","sequence":"additional","affiliation":[{"name":"Department of Paediatrics and Adolescent Medicine Copenhagen University Hospital Rigshospitalet  Copenhagen 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