Volume 120, Issue 3 pp. 464-470

Mutational analysis of class III receptor tyrosine kinases (C-KIT, C-FMS, FLT3) in idiopathic myelofibrosis

Faisel M. Abu-Duhier

Faisel M. Abu-Duhier

Academic Unit of Haematology, Division of Genomic Medicine, Royal Hallamshire Hospital, Sheffield, UK

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Anne C. Goodeve

Anne C. Goodeve

Academic Unit of Haematology, Division of Genomic Medicine, Royal Hallamshire Hospital, Sheffield, UK

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Rory S. Care

Rory S. Care

Academic Unit of Haematology, Division of Genomic Medicine, Royal Hallamshire Hospital, Sheffield, UK

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Mamdooh Gari

Mamdooh Gari

Academic Unit of Haematology, Division of Genomic Medicine, Royal Hallamshire Hospital, Sheffield, UK

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Gill A. Wilson

Gill A. Wilson

Academic Unit of Haematology, Division of Genomic Medicine, Royal Hallamshire Hospital, Sheffield, UK

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Ian R. Peake

Ian R. Peake

Academic Unit of Haematology, Division of Genomic Medicine, Royal Hallamshire Hospital, Sheffield, UK

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John T. Reilly

John T. Reilly

Academic Unit of Haematology, Division of Genomic Medicine, Royal Hallamshire Hospital, Sheffield, UK

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First published: 06 February 2003
Citations: 32
Dr J. T. Reilly, Department of Haematology, H floor, Royal Hallamshire Hospital, Sheffield, S10 2JF, UK. E-mail: [email protected]

Abstract

Summary. Genomic DNA from patients with idiopathic myelofibrosis (IMF) was screened by polymerase chain reaction (PCR) and conformation sensitive gel electrophoresis (CSGE) for mutations in the C-KIT gene (60 patients), as well as the C-FMS and FLT3 genes (40 patients). Intronic primers were used to amplify the entire coding region of both the C-KIT and C-FMS genes, and selected regions of the FLT3 gene. CSGE and direct DNA sequencing detected all previously reported as well as several novel polymorphisms in each of the genes. A novel c-fms exon 9 mutation (Gly413Ser) was detected in two patients. Its functional significance remains to be determined. The c-kit mutation Asp52Asn, previously described in two of six IMF patients in Japan, was not detected in this study. In addition, the reported c-fms mutations involving codons 301 and 969 were not identified. Therefore, in contrast to acute myeloid leukaemia, mutations in RTKs class III do not appear to play a significant pathogenetic role in idiopathic myelofibrosis.

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