A novel phenotype variant of severe congenital neutropenia caused by G6PC3 deficiency

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Severe congenital neutropenia type 4 (SCN4) is associated with mutations in the G6PC3 gene. To date, all patients bearing the p.Gly260Arg variant of the G6PC3 gene show heart defects. Here, we present a case of the p.Gly260Arg variant in a patient who did not have structural or functional heart anomalies. Treatment with granulocyte colony-stimulating factor recovered the absolute neutrophil count and neutrophil functional competence.

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