TY - JOUR
T1 - Increasing complexity of the karyotype in 50 human gliomas. Progressive evolution and de novo occurrence of cytogenetic alterations
AU - Magnani, Ivana
AU - Guerneri, Silvana
AU - Pollo, Bianca
AU - Cirenei, Nicola
AU - Colombo, Bruno M.
AU - Broggi, Giovanni
AU - Galli, Carlo
AU - Bugiani, Orso
AU - DiDonato, Stefano
AU - Finocchiaro, Gaetano
AU - Conti, Anna Maria Fuhrman
PY - 1994/7/15
Y1 - 1994/7/15
N2 - We studied the karyotypes of eight differentiated gliomas, 19 anaplastic gliomas, and 23 glioblastomas (GBM). Normal stemlines were present in 70% of the differentiated and anaplastic gliomas; abnormalities were mostly characterized by loss of sex chromosomes. In GBM, on the contrary, only 13% of the stemlines were normal and three groups, 45,XO, near-diploid, and near tetraploid, could be identified. The most frequent alterations among GBM were: total or partial loss of chromosome 10 in nine cases, structural abnormalities of chromosome 9 in seven cases, and loss of the Y chromosome in stemline clones of seven cases. Less frequent abnormalities included chromosomes 7, 1, 3, and 19. Our data support the cytogenetic model of gliomas as multi-stage tumors. GBM, in particular, can originate from the evolution of astrocytomas but can also develop de novo. In both cases loss of genetic material on chromosome 10 seems to play a crucial role.
AB - We studied the karyotypes of eight differentiated gliomas, 19 anaplastic gliomas, and 23 glioblastomas (GBM). Normal stemlines were present in 70% of the differentiated and anaplastic gliomas; abnormalities were mostly characterized by loss of sex chromosomes. In GBM, on the contrary, only 13% of the stemlines were normal and three groups, 45,XO, near-diploid, and near tetraploid, could be identified. The most frequent alterations among GBM were: total or partial loss of chromosome 10 in nine cases, structural abnormalities of chromosome 9 in seven cases, and loss of the Y chromosome in stemline clones of seven cases. Less frequent abnormalities included chromosomes 7, 1, 3, and 19. Our data support the cytogenetic model of gliomas as multi-stage tumors. GBM, in particular, can originate from the evolution of astrocytomas but can also develop de novo. In both cases loss of genetic material on chromosome 10 seems to play a crucial role.
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U2 - 10.1016/0165-4608(94)90157-0
DO - 10.1016/0165-4608(94)90157-0
M3 - Article
C2 - 8055485
AN - SCOPUS:0027984982
VL - 75
SP - 77
EP - 89
JO - Cancer Genetics and Cytogenetics
JF - Cancer Genetics and Cytogenetics
SN - 0165-4608
IS - 2
ER -