PMID- 18602381 OWN - NLM STAT- MEDLINE DCOM- 20081009 LR - 20151119 IS - 1873-2933 (Electronic) IS - 0009-9120 (Linking) VI - 41 IP - 13 DP - 2008 Sep TI - Prognostic value of cell-cycle regulators and cellular biomarkers in laryngeal squamous cell carcinoma. PG - 1059-66 LID - 10.1016/j.clinbiochem.2008.06.001 [doi] AB - OBJECTIVE: Combining information derived from cellular biomarkers as telomerase and genes encoding cyclin dependent kinase inhibitors (p16(INK4a) and p15(INK4b)) is needed to facilitate the stratification of individual patients within the conventional clinicopathologic parameters. DESIGN AND METHODS: One hundred forty laryngeal squamous cell carcinoma (LSCC) tissue specimens were investigated for telomerase activity and the deletions of p16(INK4a) and p15(INK4b) genes. RESULTS: Of the 140 tissues assayed, 71% demonstrated high telomerase activity, 68.6% and 80% showed deletions in p16(INK4a) and p15(INK4b) genes, respectively. Significant difference was observed between telomerase activity, p16(INK4a) and p15(INK4b) deletions among each other and with advanced stage, poorly differentiated grades, high proliferation and DNA aneuploidy. The markers and the aforementioned clinicopathological factors were correlated with progression in univariate analysis; and associated with survival in multivariate analysis. CONCLUSION: Progression of LSCC is accompanied by a parallel increase in telomerase activity and deletions in cell-cycle regulators (p16(INK4a), p15(INK4b)) which may assist in prognostication and better classification of patients for treatment. FAU - Swellam, Menha AU - Swellam M AD - Department of Biochemistry, Genetic Engineering and Biotechnology Research Division, National Research Center, Tahrir Street, Dokki, Giza 12311, Egypt. menha_m_swellam@yahoo.com FAU - El-Arab, Lobna R Ezz AU - El-Arab LR FAU - Adly, Ahmed AU - Adly A LA - eng PT - Journal Article DEP - 20080610 PL - United States TA - Clin Biochem JT - Clinical biochemistry JID - 0133660 RN - 0 (Biomarkers, Tumor) RN - 0 (Cyclin-Dependent Kinase Inhibitor p15) RN - 0 (Cyclin-Dependent Kinase Inhibitor p16) RN - EC 2.7.7.49 (Telomerase) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - Biomarkers, Tumor/*analysis MH - Carcinoma, Squamous Cell/*diagnosis/therapy MH - Combined Modality Therapy MH - Cyclin-Dependent Kinase Inhibitor p15/*genetics MH - Cyclin-Dependent Kinase Inhibitor p16/*genetics MH - Disease Progression MH - Female MH - Gene Deletion MH - Humans MH - Laryngeal Neoplasms/*diagnosis/therapy MH - Male MH - Middle Aged MH - Prognosis MH - Regression Analysis MH - Risk Factors MH - Survival Analysis MH - Telomerase/*metabolism EDAT- 2008/07/08 09:00 MHDA- 2008/10/10 09:00 CRDT- 2008/07/08 09:00 PHST- 2007/12/11 00:00 [received] PHST- 2008/05/01 00:00 [revised] PHST- 2008/06/01 00:00 [accepted] PHST- 2008/07/08 09:00 [pubmed] PHST- 2008/10/10 09:00 [medline] PHST- 2008/07/08 09:00 [entrez] AID - S0009-9120(08)00221-X [pii] AID - 10.1016/j.clinbiochem.2008.06.001 [doi] PST - ppublish SO - Clin Biochem. 2008 Sep;41(13):1059-66. doi: 10.1016/j.clinbiochem.2008.06.001. Epub 2008 Jun 10.