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Abstract

We report a child with immune dysregulation, polyendocrinopathy, enteropathy, X-linked (IPEX) syndrome due to a de novo c.1190G>A (p.R397Q) mutation in exon 11 of the forkhead domain of the FOXP3 gene. He had chronic dermatitis with an eczematous and ichthyosiform appearance and had an allogeneic bone marrow transplantation. IPEX syndrome is a rare, often fatal recessive disease caused by mutations in the FOXP3 gene on the X chromosome (Xp11.23-q13.3).