The predictive value of p53, MDM-2, cyclin D1 and Ki67 in the progression from low-grade dysplasia towards carcinoma of the larynx

Lorenzo Pignataro, Pasquale Capaccio, Giancarlo Pruneri, Nadia Carboni, Roberto Buffa, Antonino Neri, Antonio Ottaviani

Research output: Contribution to journalArticlepeer-review

Abstract

To evaluate the predictive role of the oncogenes p53, MDM-2 and cyclin D1, and the proliferative marker Ki67, in the progression from low-grade dysplasia to carcinoma of the larynx. We studied immunohistochemically a series of 32 low-grade pre-neoplastic laryngeal lesions, 10 of which progressed to invasive carcinoma. Immunoreactivity in more than 10 per cent of the dysplastic cells was detected in five cases immunostained with anti-p53 (≃ 15 per cent), in two with anti-MDM-2 (≃ six per cent), and 11 with anti-Ki67 antibodies (≃ 34 per cent), whereas none of the cases showed cyclin D1 overexpression. No significant association was found between p53 and MDM-2 immunoreactivity and the evolution to carcinoma; on the contrary, Ki67 expression was detectable in all but one of the 10 cases developing an infiltrative tumour (90 per cent), and in two of the 22 cases that did not progress (≃ nine per cent) (p = 0.01). These findings indicate that immunohistochemical assessment of the proliferative index in bioptic samples of dysplastic laryngeal mucosa may be useful in selecting patients who should undergo a more specific follow-up evaluation.

Original languageEnglish
Pages (from-to)455-459
Number of pages5
JournalJournal of Laryngology and Otology
Volume112
Issue number5
Publication statusPublished - 1998

Keywords

  • Immunohistochemistry
  • Laryngeal neoplasms
  • Oncogenes
  • Tumour markers, biological

ASJC Scopus subject areas

  • Otorhinolaryngology

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