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Specific c-kit Mutations in Sinonasal Natural Killer/T-Cell Lymphoma in China and Japan

Hongyo, Tadashi and Mukh, Syaifudin (2000) Specific c-kit Mutations in Sinonasal Natural Killer/T-Cell Lymphoma in China and Japan. Cancer Research, 60 (9). pp. 2345-2348.

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Abstract

Sinonasal lymphoma is one of the constituents of lethal midline granuloma, which is a clinical term for progressive, destructive lesions affecting the midline of the face. The majority of sinonasal lymphomas, especially those showing polymorphous patterns of proliferation and thus termed polymorphic reticulosis, recently were categorized as sinonasal natural killer/T-cell lymphomas. They are more prevalent in Asia than Europe or North America and are associated with EBV infection. Twenty three cases with sinonasal natural killer/T-cell lymphomas were collected from two high-incidence regions: Beijing, China (14 cases) and Osaka, Japan (9 cases). c-kit mutations were analyzed on paraffin-embedded specimens by PCR-single-strand conformation polymorphism followed by direct sequencing; the c-kit proto-oncogene encodes a receptor of tyrosine kinase, which plays an important role in the regulation of normal and neoplastic hematopoiesis by the interaction with its specific ligand, termed stem cell factor. Twelve single nucleotide substitution mutations were seen in 23 cases. Ten of 14 Chinese cases (71.4%) had mutations at exon 11 or exon 17, whereas only two of nine Japanese cases (22.2%) had mutations, showing a significant difference in frequency between Chinese and Japanese cases. Furthermore, seven of eight mutations (92%) in exon 17 occurred at codon 825 and three of four mutations (75%) in exon 11 occurred at codon 561. Such a specificity has not been reported before, and these results, taken together, suggest that location-specific differences in etiological factors cause specific mutations in c-kit gene.

Item Type: Article
Subjects: Keselamatan dan Keamanan Nuklir > Keselamatan Radiasi dan Kesehatan kerja > Keselamatan dan Kesehatan Kerja
Divisions: Pusat Teknologi Keselamatan dan Metrologi Radiasi
Depositing User: USER PTKMR BATAN
Date Deposited: 26 May 2018 05:52
Last Modified: 26 May 2018 05:52
URI: http://repo-nkm.batan.go.id/id/eprint/2379

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