A 4-year-old boy presented with perianal abscess and granulomatous colitis, which led the diagnosis of Crohn's disease. He became refractory to all available therapies and required colectomy. Targeted sequencing revealed a deleterious variant in NCF4, causing severe neutrophil dysfunction. He underwent hematopoietic stem cell transplantation (HSCT) with an excellent outcome.
Keywords: Crohn's disease; IBD; NCF4; children; chronic granulomatosis disease.
Copyright © 2019. Published by Elsevier Inc.