P53 expression, DNA ploidy and S-phase cell fraction in operable locally advanced non-small-cell lung cancer

A. Costa, R. Silvestrini, C. Mochen, C. Lequaglie, P. Boracchi, A. Faranda, G. Vessecchia, G. Ravasi

Research output: Contribution to journalArticlepeer-review


The identification of biomarkers to complement pathological stage for a more accurate prognosis and help clinicians decide on treatment is still an open problem for patients with lung cancer. Expression of P53 protein was detected by an immunohistochemical approach using the monoclonal antibody PAb1801 on paraffin-embedded sections of tumours obtained surgically from 102 stage II-IIIa patients with non-small-cell lung cancer (52 squamous cell carcinomas, 50 adenocarcinomas). [ 3H]Thymidine labelling index, an indicator of the S-phase cell fraction, was evaluated on histological sections of [ 3H]thymidine-labelled tumour samples. DNA ploidy was defined by flow cytometric analysis on frozen tumour tissue. The biomarkers, histology and pathological stage were analysed in relation to relapse-free survival in univariate and multivariate analyses. Stage and interaction between [ 3H]thymidine labelling index and histology provided significant prognostic information for the overall series. [ 3H]thymidine labelling index was an independent prognostic indicator of 3 year relapse-free survival in patients with adenocarcinoma. The results indicate the importance of cell proliferation to complement prognostic information provided by pathological stage in patients with stage II-IIIa adenocarcinomas.

Original languageEnglish
Pages (from-to)914-919
Number of pages6
JournalBritish Journal of Cancer
Issue number7
Publication statusPublished - 1996


  • [ H]thymidine labelling index
  • DNA ploidy
  • Lung cancer
  • P53 expression
  • Prognosis

ASJC Scopus subject areas

  • Cancer Research
  • Oncology


Dive into the research topics of 'P53 expression, DNA ploidy and S-phase cell fraction in operable locally advanced non-small-cell lung cancer'. Together they form a unique fingerprint.

Cite this