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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Multilineage involvement of the fusion gene in patients with FIP1L1/PDGFRA-positive hypereosinophilic syndrome.

Myeloproliferative hypereosinophilic syndrome (MHES) is a disorder characterised by male predominance, marked eosinophilia, splenomegaly, tissue fibrosis, elevated serum tryptase and the presence of the FIP1L1/PDGFRA fusion gene in peripheral blood mononuclear cells. The characteristic hypercellular bone marrow with dysplastic eosinophils and spindle-shaped mast cells suggest that multiple lineages may be involved in the clonal process. To determine which haematopoietic lineages are involved in MHES, we purified cells of specific lineages from patients with MHES and used nested reverse transcription polymerase chain reaction (RT-PCR), quantitative RT-PCR and fluorescence in situ hybridisation to analyse the purified cell populations for the presence of the fusion gene. The fusion gene was detected in eosinophils, neutrophils, mast cells, T cells, B cells and monocytes. These results suggest that the mutation arises in a pluripotential haematopoietic progenitor cell capable of giving rise to multiple lineages. The basis for the preferential expansion of eosinophils and mast cells remains unclear.[1]

References

  1. Multilineage involvement of the fusion gene in patients with FIP1L1/PDGFRA-positive hypereosinophilic syndrome. Robyn, J., Lemery, S., McCoy, J.P., Kubofcik, J., Kim, Y.J., Pack, S., Nutman, T.B., Dunbar, C., Klion, A.D. Br. J. Haematol. (2006) [Pubmed]
 
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