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  • Title: RUNX1-MTG16 fusion gene in acute myeloblastic leukemia with t(16;21)(q24;q22): case report and review of the literature.
    Author: De Braekeleer E, Douet-Guilbert N, Le Bris MJ, Morel F, Férec C, De Braekeleer M.
    Journal: Cancer Genet Cytogenet; 2008 Aug; 185(1):47-50. PubMed ID: 18656694.
    Abstract:
    We report here a 73-year old female who was admitted for hematomas, dyspnea, and fever. Hematological data showed pancytopenia with 9% blast cells positive for CD13, CD33, CD34, HLAD2, and myeloperoxydase. A diagnosis of acute myeloid leukemia (AML) type 2 (FAB classification) was made. Banding cytogenetic techniques performed on bone marrow cells showed a 48,XX,+8,+9,del(9)(q22q33)x2 ,t(16;21)(q24;q22)[20]/46,XX[2] karyotype. Fluorescence in situ hybridization (FISH) with BACs covering the RUNX1 (alias AML1) (band 21q22) and MTG16 (band 16q24) gene showed a fusion of both genes. The t(16;21)(q24;q22) has been described in 16 AML cases, including ours. Eleven patients had received chemotherapy for a previous cancer, most of them were been treated with DNA-topoisomerase II inhibitors known to be associated with chromosomal translocations involving the RUNX1 gene. The significant homology between MGT16 and MTG8 suggests that the RUNX1-MTG16 fusion gene induced by the t(16;21)(q24;q22) is a variant of the RUNX1-MTG8 that shares similar activity.
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