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Arch Iran Med. 2010;13(1): 21-25.
PMID: 20039765
Scopus ID: 74949105718
  Abstract View: 889
  PDF Download: 544

Original Article

Detection of KIT and FLT3 Mutations in Acute Myeloid Leukemia with Different Subtypes

Farhad Zaker, Mohammad Mohammadzadeh, Mohammad Mohammadi

Abstract

Background: Mutations in KIT and fms-like tyrosine kinase 3 genes lead to uncontrolled proliferation of leukemic cells with a poor prognosis. Since, data concerning the incidence and associations with patients characteristics vary amongst different studies, the aim of the present study is to identify and quantify the frequency of mutations in Iranian patients suffering from acute myeloid leukemia. Methods: Internal tandem duplication and D835 mutations in the fms-like tyrosine kinase 3 gene of acute myeloid leukemia patients were studied through polymerase chain reaction and polymerase chain reaction-RFLP analysis. Amplified products for a point mutation in D816 for KIT have also been identified through the polymerase chain reaction-RFLP technique. The mutations in exon 8 of KIT were detected by using the PCR and the Conformational Sensitive Gel Electrophoresis techniques, and amplified products have been confirmed by sequencing techniques.Results: Internal tandem duplication and D835 mutations in the fms-like tyrosine kinase 3 gene occurred in 18% and 6% of AML patients, respectively. Frequencies of mutation were 1.4% and 4.7% in exon 8 and D816 of the KIT gene in acute myeloid leukemia patients. These results were substantially different for various subclasses of French-American-British classification.Conclusion: This study revealed that approximately 30% of acute myeloid leukemia patients have either KIT or fms-like tyrosine kinase 3 genetic mutations. The presence of fms-like tyrosine kinase 3 was significantly associated with M3 morphology and mutations of KIT were significantly associated with M2 and M4 subtypes.

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ePublished: 01 Jan 2010
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