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Sökning: WFRF:(Björnestål Linda)

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1.
  • Dahlgren, Liselotte, et al. (författare)
  • Human papillomavirus is more common in base of tongue than in mobile tongue cancer and is a favorable prognostic factor in base of tongue cancer patients.
  • 2004
  • Ingår i: International Journal of Cancer. - 0020-7136 .- 1097-0215. ; 112:6, s. 1015-9
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>The frequency of human papilloma virus (HPV) and its influence on clinical outcome was analyzed retrospectively in pre-treatment paraffin embedded biopsies from 110 patients with tongue cancer. The presence of HPV DNA was examined in 85 mobile tongue tumors and 25 base of tongue tumors by a polymerase chain reaction (PCR) with 2 general primer pairs, GP5+/6+ and CPI/IIG. When HPV-DNA was found, HPV-type specific primers and direct sequencing were used for HPV sub-type verification. Twelve of 110 (10.9%) samples were HPV-positive; 9 for HPV-16, 1 for HPV-33, 1 for HPV-35 and 1 could not be analyzed because of shortage of DNA. HPV was significantly more common in base of tongue tumors (10/25, 40.0%) compared to tumors of the mobile tongue (2/85, 2.3%). The influence of HPV on clinical outcome in mobile tongue cancer could not be studied, due to that HPV was present in too few cases. Of the 19 patients with base of tongue cancer that were included in the survival analysis, however, 7 patients with HPV-positive base of tongue cancer had a significantly favorable 5-year survival rate compared to the 12 HPV-negative patients. In conclusion, HPV is significantly more common in base of tongue cancer than in mobile tongue cancer, and has a positive impact on disease-specific survival in patients with base of tongue cancer.</p>
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2.
  • Mellin Dahlstrand, Hanna, et al. (författare)
  • P16(INK4a) correlates to human papillomavirus presence, response to radiotherapy and clinical outcome in tonsillar carcinoma.
  • 2005
  • Ingår i: Anticancer Research. - 0250-7005 .- 1791-7530. ; 25:6C, s. 4375-83
  • Tidskriftsartikel (refereegranskat)abstract
    • <p><strong>BACKGROUND:</strong> Human papillomavirus (HPV) in tonsillar carcinoma is correlated with favourable clinical outcome. Here, p16(INK4A), in situ HPV DNA hybridisation (ISH) and HPVL1 capsid detection were evaluated in tonsillar carcinoma to predict the response to radiotherapy (RT) and prognosis.</p> <p><strong>MATERIALS AND METHODS:</strong> Fifty-one pre-treatment paraffin-embedded tonsillar cancer biopsies were analysed. Immunohistochemistry (IHC) was used for p16(INK4A) and HPVL1 capsid analysis and PCR and ISH for HPV detection.</p> <p><strong>RESULTS:</strong> High-risk HPV DNA was detected by PCR in 49% of the tumours. P16(INK4a) staining was correlated to HPV In the high-grade p16(INK4a) staining group, 94% had a complete RT response. High p16(INK4a) staining as well as the HPV PCR-positive cases had a favourable prognosis. HPV DNA ISH and L1 IHC could not predict RT response or clinical outcome.</p> <p><strong>CONCLUSION:</strong> P16(INK4a) overexpression was correlated to HPV in tonsillar carcinoma and is useful for predicting RT response and prognosis in tonsillar carcinoma patients.</p>
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