Journal
ACTA OTORRINOLARINGOLOGICA ESPANOLA
Volume 63, Issue 2, Pages 79-84Publisher
ELSEVIER DOYMA SL
DOI: 10.1016/j.otorri.2011.07.005
Keywords
Laryngeal squamous; cell carcinoma; Microsatellite instability; Chemotherapy
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Introduction and objectives: The literature on the involvement of microsatellite instability in head and neck squamous cell carcinoma shows great variability, probably due to differences in the testing methods. Using a consensus detection system, we aimed to reach a reliable estimate of microsatellite instability prevalence in a subset of head and neck squamous cell carcinoma cases. Methods: The microsatellite instabilityI status of 43 patients with previously untreated primary laryngeal squamous cell carcinomas was analyzed by a multiplex polymerase chain reaction assay including 5 mononucleotide repeat markers. Results: Thirty-six cases showed a stable phenotype or a microsatellite stable phenotype (83.7%) and 7 cases (16.3%) showed an microsatellite instability-positive phenotype. One case showed instability in 3 of 5 markers, 1 case in 2 markers and 5 cases in 1 marker. The microsatellite instability-positive and stable cases did not differ with respect to age, tumour stage, lymph node or distant metastases. Conclusions: Our data showed that a proportion of laryngeal squamous cell carcinomas are microsatellite instability positive. Knowledge of microsatellite instability patient status will allow adjusting anticancer therapy at an individual level. (C) 2011 Elsevier Espana, S.L. All rights reserved.
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