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Sökning: WFRF:(Wijkstrom H)

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  • Berggren de Verdier, P. J., et al. (författare)
  • Prognostic significance of homozygous deletions and multiple duplications at the CDKN2A (p16INK4a)/ARF (p14ARF) locus in urinary bladder cancer
  • 2006
  • Ingår i: Scand J Urol Nephrol. - : Informa UK Limited. - 0036-5599 .- 1651-2065. ; 40:5, s. 363-9
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE: The 9p21 locus is a major target in the pathogenesis of human urinary bladder cancer. This locus harbours the CDKN2A/ARF tumour suppressor gene, which encodes two cell-cycle regulatory proteins: p16INK4a and p14ARF. We studied how homozygous deletions and multiple duplications at this locus affect prognosis and survival in patients with bladder cancer. MATERIAL AND METHODS: Real-time quantitative polymerase chain reaction (QPCR), based on simultaneous amplification of ARF and a reference gene, glyceraldehyde-3-phosphate dehydrogenase, was used to measure homozygous deletions and multiple duplications in a population-based material consisting of 478 patients with urinary bladder cancer. Results from real-time QPCR were compared with clinico-pathological parameters and survival curves were generated using the Kaplan-Meier method. RESULTS: Real-time QPCR analysis showed 71 (15%) homozygous deletions and 8 (2%) multiple duplications. We were unable to find any association between either stage or grade and urinary neoplasms with homozygous deletions. However, although there were only a limited number of patients with multiple duplications, 7/8 of them had highly malignant tumours (G2b-G4 or > or = T1; p = 0.02). CONCLUSIONS: Urinary bladder cancers constitute a spectrum of neoplasms with varying clinical manifestations. We were unable to establish a prognostic relevance for patients with tumours harbouring homozygous deletions at the CDKN2A/ARF locus. However, our data did indicate that patients with multiple duplications at the CDKN2A/ARF locus had poor survival. This suggests that multiple duplications, in combination with other genetic changes, have cooperative effects which have a negative outcome on urinary bladder cancer prognosis.
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  • Berggren, P, et al. (författare)
  • p53 mutations in urinary bladder cancer
  • 2001
  • Ingår i: British journal of cancer. - : Springer Science and Business Media LLC. - 0007-0920 .- 1532-1827. ; 84:11, s. 1505-1511
  • Tidskriftsartikel (refereegranskat)
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