TY - JOUR
T1 - Chromosome abnormalities in meningeal neoplasms
T2 - Do they correlate with histology?
AU - Griffin, Constance A.
AU - Hruban, Ralph H.
AU - Long, Patricia P.
AU - Miller, Nava
AU - Volz, Peggy
AU - Carson, Benjamin
AU - Brem, Henry
N1 - Funding Information:
This work was supported in part by an American Cancer Society Clinical Oncology Career Development Award (C.G.), a grant from the American Cancer Society Maryland Division, funds from the Andrew W. Mellon Foundation, and Grant No. CA 46289-03 from NIH. The author appreciates the assistance of Michelle Carroll in manuscript preparation.
PY - 1994/11
Y1 - 1994/11
N2 - Thirty-three meningeal neoplasms were karyotyped, and the results were compared with histologic features. Thirteen neoplasms had no discernible abnormality or sex chromosome loss only; nine had monosomy or structural abnormality involving only chromosome 22; and 11 had other chromosome abnormalities with or without chromosome 22 involvement. Histologic evidence of invasion was not associated with an abnormal karyotype in the three angioblastic tumors examined. All seven fibroblastic meningiomas had abnormal karyotypes, with monosomy 22 the most common change. Abnormal karyotypes were detected in 76% of syncytial and 55% of transitional meningiomas. When these results were combined with those from 259 meningeal tumors reported since 1987, abnormal karyotypes were detected in at least half of all histologic types. Chromosome changes secondary to those involving chromosome 22 may indicate additional areas of the genome that play a role in tumor progression. In the combined series, chromosome losses were most frequently observed in meningiomatous and transitional histologies; chromosomes 1, 6, 14, 18, and Y each were lost in 10 or more meningiomas, whereas only chromosome 20 was gained at the same frequency. Structural abnormalities most frequently involved chromosome 1. These changes are distinctly different from those observed in other common intracranial neoplasms, specifically astrocytic neoplasms.
AB - Thirty-three meningeal neoplasms were karyotyped, and the results were compared with histologic features. Thirteen neoplasms had no discernible abnormality or sex chromosome loss only; nine had monosomy or structural abnormality involving only chromosome 22; and 11 had other chromosome abnormalities with or without chromosome 22 involvement. Histologic evidence of invasion was not associated with an abnormal karyotype in the three angioblastic tumors examined. All seven fibroblastic meningiomas had abnormal karyotypes, with monosomy 22 the most common change. Abnormal karyotypes were detected in 76% of syncytial and 55% of transitional meningiomas. When these results were combined with those from 259 meningeal tumors reported since 1987, abnormal karyotypes were detected in at least half of all histologic types. Chromosome changes secondary to those involving chromosome 22 may indicate additional areas of the genome that play a role in tumor progression. In the combined series, chromosome losses were most frequently observed in meningiomatous and transitional histologies; chromosomes 1, 6, 14, 18, and Y each were lost in 10 or more meningiomas, whereas only chromosome 20 was gained at the same frequency. Structural abnormalities most frequently involved chromosome 1. These changes are distinctly different from those observed in other common intracranial neoplasms, specifically astrocytic neoplasms.
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U2 - 10.1016/0165-4608(94)90045-0
DO - 10.1016/0165-4608(94)90045-0
M3 - Article
C2 - 7987805
AN - SCOPUS:0027999765
SN - 0165-4608
VL - 78
SP - 46
EP - 52
JO - Cancer Genetics and Cytogenetics
JF - Cancer Genetics and Cytogenetics
IS - 1
ER -