TEL/AML1 fusion gene in childhood acute lymphoblastic leukemia in Southern Taiwan

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Chromosomal abnormalities are found in 80-90% of childhood cases of acute lymphoblastic leukemia (ALL). Leukemia-specific chromosome aberrations not only have prognostic value, but also provide important clues for further investigation into leukogenesis, leukemic cell transformation, and proliferation. This study used reverse transcriptase-polymerase chain reaction techniques to detect transcripts of the leukemia-specific chromosome fusion gene, TEL/AML1, and to monitor the expression levels of the TEL-AML1 fusion transcript in ALL patients at sequential intervals during their treatment course. Twenty-five ALL patients were enrolled, including 20 who were newly diagnosed and five in relapse. The incidence of the TEL/AML1 fusion gene in this study was 32%. The clinical features of our eight TEL/ AML1-positive ALL cases were similar to those in other studies. Blotting analysis of the levels of the TEL-AML1 fusion transcript was used to detect minimal residual disease. Reduced levels of TEL/AML1 expression were found in four of the six patients whose bone marrow or peripheral blood samples were obtained after treatment. Further investigation with a larger sample size is warranted. © 2008 Elsevier. All rights reserved.




Lin, P. C., Chang, T. T., Lin, S. R., Chiou, S. S., Jang, R. C., & Sheen, J. M. (2008). TEL/AML1 fusion gene in childhood acute lymphoblastic leukemia in Southern Taiwan. Kaohsiung Journal of Medical Sciences, 24(6), 289–296.

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