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Irreversible Leukoencephalopathy After Reduced-intensity Stem Cell Transplantation in a Dyskeratosis Congenita Patient With TINF2 Mutation

Hematopoietic stem cell transplantation (HSCT) for dyskeratosis congenita (DC) is challenging due to severe treatment-related adverse effects. Development of pulmonary fibrosis or veno-occlusive disease is well described in DC. However, neurological complication after HSCT has not been reported. A 9-year-old Japanese male with DC harboring the TINF2 mutation received reduced-intensity HSCT. Unfortunately, patient developed posterior reversible encephalopathy syndrome–like symptoms plausibly result by combination of thrombotic microangiopathy, graft-versus-host disease, and persistent hypertension and has been persisted mental retardation. Therefore, to decrease risk in DC cases after HSCT, strict control of hypertension, graft-versus-host disease, and thrombotic microangiopathy is required.