Abstract
Purpose and methods
Loss of heterozygosity (LOH) in a chromosomal location indicates the presence of an inactivated tumor suppressor gene (TSG). Inactivation of TSG has a functional role in the tumorigenesis of head and neck squamous cell carcinoma (HNSCC). Based on the recent evidences of a putative TSG on chromosome 14, we examined LOH on chromosome 14q using eight polymorphic microsatellite markers in 50 cases of HNSCCs.
Results
Three regions were detected to have a high LOH rate which included 14q21.2-22.3 (42.5%), 14q31 (55%), and 14q32.1 (37%). The correlation between LOH and clinicopathological findings was investigated through statistical analyses. A strong correlation was observed between the highest LOH marker and the overall and disease-free survival.
Conclusions
The results suggest that the distal part of chromosome 14 may host a TSG that may lead to the development and/or progression of HNSCCs. Several genes such as CHES1, BMP4, SAV, and PNN have arisen as candidate tumor suppressors in the region.
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Acknowledgments
This work was partially supported by grants-in-aid for scientific research from the Ministry of Education, Culture, Sports, Science and Technology [19592109 (to HN), 18-06262 (to EG), 17406027 (to NN)], Seed Innovation Research from Japan Science and Technology Agency (to MG), from Sumitomo Trust Haraguchi Memorial Cancer Research Promotion (to MG) and Astrazeneca Research Grant (to MG).
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None of the authors has any potential conflict of interest.
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Davut Pehlivan and Esra Gunduz contributed equally to this work.
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Pehlivan, D., Gunduz, E., Gunduz, M. et al. Loss of heterozygosity at chromosome 14q is associated with poor prognosis in head and neck squamous cell carcinomas. J Cancer Res Clin Oncol 134, 1267–1276 (2008). https://doi.org/10.1007/s00432-008-0423-1
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DOI: https://doi.org/10.1007/s00432-008-0423-1