title: Predictive factors for overall and progression-free survival, and dissemination in oligodendroglial tumors.
abstract: The pattern of recurrence and predictive factors for tumor progression, dissemination and survival in oligodendroglial tumors were investigated. 56 consecutive patients with oligodendroglial tumors were retrospectively analyzed to determine the predictive significance of various factors, including World Health Organization grade, loss of chromosomes 1p and 19q, and immunohistochemical features of TP53, O(6)-methylguanine-deoxyribonucleic-acid-methyltransferase, CD44H, nestin, and Ki-67. Eleven patients developed dissemination, and had significantly shorter post-progression survival compared to ten patients with local recurrence. Univariate analysis showed that retention of chromosome 1p or 19q, Ki-67 labeling index > or = 25%, diffuse expression of nestin, and p53 labeling index > or = 10% were unfavorable factors for overall, progression-free, and dissemination-free survival. Multivariate analysis showed that Ki-67 labeling index > or = 25% and diffuse expression of nestin were significant for dissemination-free survival. In conclusion, post-progression survival shows significant differences between patients with local and disseminated recurrence. Ki-67 labeling index and nestin expression pattern are useful markers to predict dissemination.
authors.affiliation: Department of Neurosurgery, Tohoku University Graduate School of Medicine, Seiryo-machi, Aoba-ku, Sendai, Miyagi, Japan.
authors.forename: Masayuki
authors.initials: M
authors.lastname: Kanamori
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Kumabe
authors.forename: Yukihiko
authors.initials: Y
authors.lastname: Sonoda
authors.forename: Yoshikazu
authors.initials: Y
authors.lastname: Nishino
authors.forename: Mika
authors.initials: M
authors.lastname: Watanabe
authors.forename: Teiji
authors.initials: T
authors.lastname: Tominaga
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002872:Chromosome Deletion; D002878:Chromosomes, Human, Pair 1; D002888:Chromosomes, Human, Pair 19; D018572:Disease-Free Survival; D005260:Female; D006801:Humans; D017404:In Situ Hybridization, Fluorescence; D007381:Intermediate Filament Proteins / Q000235:genetics; D008297:Male; D008875:Middle Aged; D009419:Nerve Tissue Proteins / Q000235:genetics; D064231:Nestin; D009837:Oligodendroglioma / Q000235:genetics / Q000401:mortality / Q000473:pathology* / Q000628:therapy; D011237:Predictive Value of Tests; D012189:Retrospective Studies; D015996:Survival Rate; D016896:Treatment Outcome; D016159:Tumor Suppressor Protein p53 / Q000235:genetics / Q000378:metabolism; D055815:Young Adult
chemical_list: D007381:Intermediate Filament Proteins; C577484:NES protein, human; D009419:Nerve Tissue Proteins; D064231:Nestin; D016159:Tumor Suppressor Protein p53