Histopathological-molecular genetic correlations in referral pathologist-diagnosed low-grade "oligodendroglioma"

H. Sasaki, M. C. Zlatescu, R. A. Betensky, L. B. Johnk, A. N. Cutone, J. G. Cairncross, D. N. Louis

研究成果: Article査読

129 被引用数 (Scopus)

抄録

Allelic loss of chromosome 1p predicts increased chemosensitivity and better survival in oligodendroglial tumors. Clinical testing for 1p loss in oligodendroglial tumors at our hospital has allowed us to postulate that certain histological appearances are associated with 1p allelic status. Forty-four cases received for genetic testing were diagnosed by referring pathologists as pure low-grade oligodendroglioma. Central neuropathological review divided the series equally into 22 cases with classical oligodendroglioma histology and 22 with more astrocytic features. Molecular genetic analyses demonstrated 1p loss in 19 of 22 classic oligodendrogliomas (86%) and maintenance of both 1p alleles in 16 of 22 gliomas with astrocytic features (73%). No glial fibrillary acidic protein-positive cell type (gliofibrillary oligodendrocyte, minigemistocyte, cellular processes) was associated with 1p allelic status. Fourteen of the 44 cases were treated with chemotherapy at tumor progression: 3 "astrocytic" gliomas with 1p loss responded to PCV chemotherapy and 2 classic oligodendrogliomas that maintained both 1p alleles included a responder and a non-responder. These results suggest that histological appearance correctly predicts genotype in approximately 80% of low-grade gliomas, but that tumor genotype more closely predicts chemosensitivity. As a result, such objective molecular genetic analyses should be incorporated into patient management and into clinical trials of low-grade diffuse gliomas.

本文言語English
ページ(範囲)58-63
ページ数6
ジャーナルJournal of Neuropathology and Experimental Neurology
61
1
DOI
出版ステータスPublished - 2002
外部発表はい

ASJC Scopus subject areas

  • 病理学および法医学
  • 神経学
  • 臨床神経学
  • 細胞および分子神経科学

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