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Mosaic tetraploidy and transient GFI1 mutation in a patient with severe chronic neutropenia
Author(s) -
Hochberg Jessica C.,
Miron Patricia M.,
Hay Beverly N.,
Woda Bruce A.,
Wang Sa A.,
RichertPrzygonska Monika,
Aprikyan Andrew A.G.,
Newburger Peter E.
Publication year - 2008
Publication title -
pediatric blood and cancer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.116
H-Index - 105
eISSN - 1545-5017
pISSN - 1545-5009
DOI - 10.1002/pbc.21094
Subject(s) - neutropenia , leukopenia , medicine , bone marrow , peripheral blood , immunology , gene , genetics , biology , chemotherapy
This report presents the case of a 15‐year‐old male with severe chronic neutropenia, leukopenia, and persistent tetraploid mosaicism in the bone marrow and peripheral blood. His father had mild neutropenia and bone marrow tetraploidy. Flow cytometric analysis of DNA content peripheral blood showed tetraploidy in 20% of granulocytes and 15% of monocytes. Sequence analysis of the ELA2 gene was normal, but the GFI1 gene exhibited transient appearance of single base changes the coding region and promoter. We speculate that an underlying genetic defect, inherited in an autosomal dominant pattern, leads to both disordered mitosis and neutropenia in this kindred. Pediatr Blood Cancer 2008;50:630–632. © 2006 Wiley‐Liss, Inc.