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Chromosome abnormalities of the short arm of chromosome 12 in hematopoietic malignancies: a report including three novel translocations involving the TEL/ETV6 gene

Abstract

A wide variety of abnormalities of the short arm of chromosome 12 has been reported in hematologic malignancies. The most frequent rearrangements result from t(12;21)(p13;q22) of childhood acute lymphoblastic leukemia, a translocation cryptic when leukemic cells are analyzed with chromosome banding techniques. This translocation results in a fusion of the TEL/ETV6 and AML1 genes. In this report, examples of rearrangements of 12p are presented. Study of two complex chromosome abnormalities associated with t(12;21) emphasizes the importance of using FISH in detection of such translocations. Three novel translocations involving the TEL/ETV6 gene localized on 12p13 are also reported: t(X;12)(q28;p13), t(1;12)(q21;p13), and t(9;12)(p23-24;p13). Finally, the presentation of two translocations with breakpoints located centromeric to TEL/ETV6 highlights the not uncommon involvement of genes other than TEL/ETV6 on 12p.

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Berger, R., Le Coniat, M., Lacronique, V. et al. Chromosome abnormalities of the short arm of chromosome 12 in hematopoietic malignancies: a report including three novel translocations involving the TEL/ETV6 gene. Leukemia 11, 1400–1403 (1997). https://doi.org/10.1038/sj.leu.2400785

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  • DOI: https://doi.org/10.1038/sj.leu.2400785

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