Mosaic tetraploidy and transient GFI1 mutation in a patient with severe chronic neutropenia.
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.
Hochberg
Jessica C
JC
Department of Pediatrics, University of Massachusetts Medical School, Worcester, Massachusetts, USA.
Miron
Patricia M
PM
Hay
Beverly N
BN
Woda
Bruce A
BA
Wang
Sa A
SA
Richert-Przygonska
Monika
M
Aprikyan
Andrew A G
AA
Newburger
Peter E
PE
D000293:Adolescent; D000328:Adult; D002908:Chronic Disease; D004268:DNA-Binding Proteins / Q000235:genetics*; D005799:Genes, Dominant; D006098:Granulocytes / Q000648:ultrastructure; D006801:Humans; D007938:Leukemia / Q000235:genetics; D007970:Leukopenia / Q000151:congenital / Q000235:genetics; D008224:Lymphoma, Follicular / Q000235:genetics; D008297:Male; D008938:Mitosis / Q000235:genetics; D009000:Monocytes / Q000648:ultrastructure; D009030:Mosaicism; D016296:Mutagenesis; D009503:Neutropenia / Q000151:congenital* / Q000235:genetics; D010265:Paraproteinemias / Q000235:genetics; D010375:Pedigree; D011123:Polyploidy; D014157:Transcription Factors / Q000235:genetics*
D004268:DNA-Binding Proteins; C498275:GFI1 protein, human; D014157:Transcription Factors