Congenital neutropenia and VPS45

Congenital neutropenia.

Congenital neutropenia comprises a variety of genetically heterogeneous phenotypic traits. Molecular elucidation of the underlying genetic defects has yielded important insights into the physiology of neutrophil differentiation and function. Non-syndromic variants of congenital neutropenia are caused by mutations in ELA2, HAX1, GFI1, or WAS. Syndromic variants of congenital neutropenia may be d...

Congenital and acquired neutropenia.

Our understanding of the pathogenesis of congenital and acquired neutropenia is rapidly evolving. New ground-breaking observations have identified the genes responsible for many of the congenital neutropenia syndromes and are also providing new insights into normal neutrophil commitment and differentiation. Acquired neutropenia remains a poorly understood syndrome, although new insights into it...

Molecular basis of congenital neutropenia.

Severe congenital neutropenia: case report

Introduction Neutropenia is defined in the literature as absolute neutrophil counts in peripheral blood of less than 1500 cells/mm3 in more than one year old and less than 2000cells/mm3 in children in the first year old of life. Neutropenia is classified as mild, moderate or severe, and may be congenital or acquired, persistent or not. Kostmann syndrome is a severe neutropenia, the incidence va...

Granulopoiesis in severe congenital neutropenia.

The pathogenesis of the granulopoietic failure in three children with severe congenital neutropenia was studied. Mature neutrophils were absent from both peripheral blood and bone marrow. Assay of bone marrow granulocyte colony-forming cells (CFU-C) in a methylcellulose tissue culture system using colony-stimulating activity (CSA) from peripheral blood leukocytes demonstrated normal or increase...