Cytogenetic Analysis of 101 Giant Cell Tumors of Bone: Nonrandom Patterns of Telomeric Associations and Other Structural Aberrations

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Gorunova, LudmilaLund University,Lunds universitet,Avdelningen för klinisk genetik,Institutionen för laboratoriemedicin,Medicinska fakulteten,Division of Clinical Genetics,Department of Laboratory Medicine,Faculty of Medicine (author)

Cytogenetic Analysis of 101 Giant Cell Tumors of Bone: Nonrandom Patterns of Telomeric Associations and Other Structural Aberrations

Article/chapterEnglish2009

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Wiley,2009

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LIBRIS-ID:oai:lup.lub.lu.se:6c220dc9-cd79-4c4e-89da-0493b0055eef
https://lup.lub.lu.se/record/1425217URI
https://doi.org/10.1002/gcc.20667DOI

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Language:English
Summary in:English

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Giant cell tumor of bone (GCTB) is a benign but locally aggressive tumor with metastatic potential. We performed cytogenetic analysis on 10 1 GCTB from 92 patients. Karyotypes were obtained from 95 tumors, 47 of which had clonal aberrations. The majority of the cytogenetically abnormal GCTB had multiple, up to 28 per tumor, clones. Clonal telomeric associations (tas) and other structural and numerical changes were found in about 70, 60, and 30%, respectively, of clonally abnormal tumors. Forty-seven aberrations were recurrent, of which 35 are novel. The vast majority of the recurrent aberrations were tas, confirming the important role of telomeric fusions in the development of GCTB. The frequency of tas in GCTB cultures increased with passaging, suggesting a selective advantage of tas-positive cells in vitro. The termini most frequently involved in tas were 22p, 13p, 15p, 21p, 14p, 19q, 1q, 12p, 11p, and 20q. The frequency of tas (irrespective of their clonality) was significantly higher in tumors carrying clonal changes, indicating that tas are precursors of other types of aberrations. In line with this assumption, the chromosomes preferentially involved in tas in a given tumor were also the ones most often affected by other rearrangements. We did not find the previously reported amplicon in 20q11.1, assessed by fluorescence in situ hybridization in 10 tumors. Nor did we find any association between cytogenetic features and adverse clinical outcome. Thus, local recurrences probably depend more on the adequacy of surgical treatment than on the intrinsic biology of the tumors. (C) 2009 Wiley-Liss, Inc.

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Vult von Steyern, FredrikLund University,Lunds universitet,Ortopedi, Lund,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Orthopaedics (Lund),Section III,Department of Clinical Sciences, Lund,Faculty of Medicine(Swepub:lu)ort-fvu (author)
Storlazzi, TizianaLund University,Lunds universitet,Avdelningen för klinisk genetik,Institutionen för laboratoriemedicin,Medicinska fakulteten,Division of Clinical Genetics,Department of Laboratory Medicine,Faculty of Medicine(Swepub:lu)klin-tst (author)
Bjerkehagen, Bodil (author)
Folleras, Gunnar (author)
Heim, SverreLund University,Lunds universitet,Avdelningen för klinisk genetik,Institutionen för laboratoriemedicin,Medicinska fakulteten,Division of Clinical Genetics,Department of Laboratory Medicine,Faculty of Medicine(Swepub:lu)klin-she (author)
Mandahl, NilsLund University,Lunds universitet,Avdelningen för klinisk genetik,Institutionen för laboratoriemedicin,Medicinska fakulteten,Division of Clinical Genetics,Department of Laboratory Medicine,Faculty of Medicine(Swepub:lu)kgen-nma (author)
Mertens, FredrikLund University,Lunds universitet,Avdelningen för klinisk genetik,Institutionen för laboratoriemedicin,Medicinska fakulteten,Division of Clinical Genetics,Department of Laboratory Medicine,Faculty of Medicine(Swepub:lu)kgen-fme (author)
Avdelningen för klinisk genetikInstitutionen för laboratoriemedicin (creator_code:org_t)

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In:Genes, Chromosomes and Cancer: Wiley48:7, s. 583-6021045-22571098-2264

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