Case Report: Characterization of known (c.607G>C) and novel (c.416C>G) ELANE mutations in two Mexican families with congenital neutropenia.

Abstract

The most common causes of congenital neutropenia are mutations in the ELANE (Elastase, Neutrophil Expressed) gene (19p13.3), mostly in exon 5 and the distal portion of exon 4, which result in different clinical phenotypes of neutropenia. Here, we report two pathogenic mutations in ELANE, namely, c.607G>C (p.Gly203Arg) and a novel variant c.416C>G (p.Pro139Arg), found in two Mexican families ascertained via patients with congenital neutropenia who responded positively to the granulocyte colony-stimulating factor (G-CSF) treatment. These findings highlight the usefulness of identifying variants in patients with inborn errors of immunity for early clinical management and the need to rule out mosaicism in noncarrier parents with more than one case in the family.

• Authors: María Enriqueta Núñez-Núñez, Juan Carlos Lona-Reyes, Brenda López-Barragán, Rosa Margarita Cruz-Osorio, Bricia Melissa Gutiérrez-Zepeda, Antonio Quintero-Ramos, Denisse Stephania Becerra-Loaiza
• Journal: Frontiers in immunology (Front Immunol) Vol. 14 Pg. 1194262 ( 2023) ISSN: 1664-3224 [Electronic] Switzerland
• PMID: 37795094 (Publication Type: Case Reports)
• Copyright: Copyright © 2023 Núñez-Núñez, Lona-Reyes, López-Barragán, Cruz-Osorio, Gutiérrez-Zepeda, Quintero-Ramos and Becerra-Loaiza.

Chemical References

• Leukocyte Elastase

Topics

• Humans
• Mutation
• Congenital Bone Marrow Failure Syndromes (genetics)
• Neutropenia (congenital)
• Leukocyte Elastase (genetics)