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- W2003295846 abstract "Abstract Gastrointestinal stromal tumors (GISTs) are mesenchymal neoplasms characterized by frequent chromosome arm 14q losses. In this study, the 14q changes in a series of 39 histologically and immunohistochemically confirmed GISTs were analyzed in detail by metaphase and/or interphase fluorescence in situ hybridization (FISH) studies using 21 genetically well‐characterized, region‐specific 14q11‐24 YAC clones. By conventional cytogenetic analysis, acquired clonal chromosome aberrations were found in 17 out of 35 tumors. Chromosome 14 was involved in 13 cases; six specimens showed complete chromosome 14 loss, while the remaining seven had structural abnormalities with the breakpoints residing within the intervals 14q11‐13 or 14q22‐24. Other recurrent chromosome aberrations included frequent deletions of chromosome 1p (11/17), losses of chromosome 22 (7/17), losses or deletions of chromosome arm 13 (6/17) or 15 (4/17), and gains or translocations involving chromosome 17 (4/17). Combining cytogenetic data with double‐color FISH analysis, total or partial losses of 14q material were detected in 29 out of 36 tumors (81%). The 14q losses were found in all stages and histological subtypes. Two most frequent common deletion regions flanked by YACs 931B1 and 761D4, and 802E7 and 892C11 at 14q23‐24 (25/30 of each; 83%) could be identified. Furthermore, 21 tumors (70%) shared a region of deletion defined by YACs 957H10 and 931E5 at 14q11‐12. Our results suggest the presence of at least three distinct critical deletion regions on chromosome 14 in GISTs. © 2001 Wiley‐Liss, Inc." @default.
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- W2003295846 date "2001-07-23" @default.
- W2003295846 modified "2023-10-17" @default.
- W2003295846 title "Molecular cytogenetic definition of three distinct chromosome arm 14q deletion intervals in gastrointestinal stromal tumors" @default.
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- W2003295846 doi "https://doi.org/10.1002/gcc.1163" @default.
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