title: Molecular analysis of chromosome 1, 10 and 19 abnormalities in human oligodendroglial tumors: relationship between frequency of LOH grade, age and gender.
abstract: BACKGROUND
  Loss of heterozygosity (LOH) on 1p and 19q is observed in most oligodendroglial tumors. LOH on 10q appears to be less common in these tumors as compared to other gliomas.
  
  
  METHODS
  We reviewed 14 patients with oligodendroglial tumors (10 low-grade and 4 anaplastic oligodendroglioma) to evaluate the frequency of LOH on 1p, 10q and 19q and correlate it with tumor grade and patients' age and gender; 5 loci on 1p and 5 on 19q as well as 4 on 10q were analyzed for LOH using PCR techniques.
  
  
  RESULTS
  LOH on 1p together with 19q was detected in 6 tumors, 1 tumor showed deletion of 19q accompanied with deletion on 10q. Deletion on 1p was associated with deletion of 19q (p < 0.005) and mutual associations among deletions at loci on 19q (p < 0.05) were found. Patients with LOH on 1p were younger on average than patients with retained heterozygosity (p = 0.05). Grade II oligodendrogliomas predominated among younger patients (p < 0.01) while grade III oligodendrogliomas predominated among women (p < 0.005). No association between LOH on 1p nor 19q and tumor grade or patients' gender was found.
  
  
  CONCLUSIONS
  Our study provides several clinically interesting findings and further supports the hypothesis of chromosome 1p and 19q involvement in the oligodendroglial cancerogenesis.
authors.affiliation: Department of Molecular Pathology and Neuropathology, Medical University of Lodz, Poland. sylwiagresner@yahoo.com
authors.forename: S M
authors.initials: SM
authors.lastname: Gresner
authors.forename: P
authors.initials: P
authors.lastname: Rieske
authors.forename: K
authors.initials: K
authors.lastname: Wozniak
authors.forename: S
authors.initials: S
authors.lastname: Piaskowski
authors.forename: D J
authors.initials: DJ
authors.lastname: Jaskolski
authors.forename: W
authors.initials: W
authors.lastname: Skowronski
authors.forename: E
authors.initials: E
authors.lastname: Golanska
authors.forename: B
authors.initials: B
authors.lastname: Sikorska
authors.forename: P P
authors.initials: PP
authors.lastname: Liberski
mesh_terms: D000328:Adult; D000367:Age Factors; D001932:Brain Neoplasms / Q000235:genetics* / Q000473:pathology*; D002869:Chromosome Aberrations; D002878:Chromosomes, Human, Pair 1 / Q000235:genetics; D002879:Chromosomes, Human, Pair 10 / Q000235:genetics; D002888:Chromosomes, Human, Pair 19 / Q000235:genetics; D004273:DNA, Neoplasm / Q000235:genetics*; D005260:Female; D006801:Humans; D019656:Loss of Heterozygosity; D008297:Male; D008875:Middle Aged; D009837:Oligodendroglioma / Q000235:genetics* / Q000473:pathology; D012737:Sex Factors
chemical_list: D004273:DNA, Neoplasm