Fusion of the ALK gene to the clathrin heavy chain gene, CLTC, in inflammatory myofibroblastic tumor |
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| Authors: | Bridge J A Kanamori M Ma Z Pickering D Hill D A Lydiatt W Lui M Y Colleoni G W Antonescu C R Ladanyi M Morris S W |
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| Affiliation: | Department of Pathology, Center for Human Molecular Genetics, 983135 University of Nebraska Medical Center, Omaha, NE 68198, USA. jbridge@unmc.edu |
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| Abstract: | Inflammatory myofibroblastic tumor (IMT) is a rare, but distinctive mesenchymal neoplasm composed of fascicles of bland myofibroblasts admixed with a prominent inflammatory component. Genetic studies of IMTs have demonstrated chromosomal abnormalities of 2p23 and rearrangement of the anaplastic lymphoma kinase (ALK) gene locus. In a subset of IMTs, the ALK C-terminal kinase domain is fused with a tropomyosin N-terminal coiled-coil domain. In the current study, fusion of ALK with the clathrin heavy chain (CTLC) gene localized to 17q23 was detected in two cases of IMT. One of these cases exhibited a 2;17 translocation in addition to other karyotypic anomalies [46,XX,t(2;17)(p23;q23),add(16)(q24)]. |
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