PMID- 12148857 OWN - NLM STAT- MEDLINE DCOM- 20020905 LR - 20151119 IS - 0023-852X (Print) IS - 0023-852X (Linking) VI - 112 IP - 3 DP - 2002 Mar TI - Cyclin D1 amplification and p16(MTS1/CDK4I) deletion correlate with poor prognosis in head and neck tumors. PG - 472-81 AB - OBJECTIVES/HYPOTHESIS: Cyclin D1, a cell cycle regulator localized to chromosome 11q13, is amplified in several human tumors including head and neck squamous cell carcinoma (HNSCC). Amplification and/or overexpression of cyclin D1 have been correlated to a poor prognosis. Deletion of the p16 gene, localized to 9p21, has also been observed in a significant proportion of HNSCC. The p16 gene regulates cyclin D1-CDK4 activity and prevents retinoblastoma tumor suppressor gene phosphorylation, thereby downregulating cellular proliferation. Detection of cyclin D1 amplification and p16 deletion using a simple and sensitive method will be valuable for the development of effective treatment modalities for head and neck cancer. STUDY DESIGN: We have used fluorescence in situ hybridization (FISH) to study cyclin D1 amplification and p16 gene deletion in head and neck tumors. Both single- and dual-color FISH were performed. METHODS: Paraffin-embedded tissues from 103 patients with HNSCC were analyzed using genomic DNA probes for cyclin D1 and p16. Dual-color FISH was performed with chromosome 11 or 9 centromeric probes as a control. Twenty-eight of these samples were analyzed for p16 expression by immunohistochemistry. RESULTS: Cyclin D1 amplification was observed in 30% (31/103) of patients, and p16 deletion in 52% (54/103). Lack of p16 expression was observed in 64% (18/28) of patients. There was a good correlation between the deletion of p16 sequences and the loss of p16 expression (P = .008). Amplification of cyclin D1 had a statistically significant association with recurrence, distant metastasis, and survival at 36 months. There was a significant association between p16 deletion and the development of distant metastases. Cyclin D1 amplification and p16 deletion together correlated with recurrence, distant metastasis, and survival. CONCLUSIONS: We demonstrate that FISH is a simple and sensitive method for detecting cyclin D1 amplification and p16 deletion in head and neck cancer. Our results suggest that these two genetic aberrations together portend a poorer outcome than either of the abnormalities alone in head and neck cancer. FAU - Namazie, Ali AU - Namazie A AD - Division of Head and Neck Surgery, University of California Los Angeles School of Medicine, USA. FAU - Alavi, Sassan AU - Alavi S FAU - Olopade, Olufunmilayo I AU - Olopade OI FAU - Pauletti, Giovanni AU - Pauletti G FAU - Aghamohammadi, Neema AU - Aghamohammadi N FAU - Aghamohammadi, M AU - Aghamohammadi M FAU - Gornbein, Jeffrey A AU - Gornbein JA FAU - Calcaterra, Thomas C AU - Calcaterra TC FAU - Slamon, Dennis J AU - Slamon DJ FAU - Wang, Marilene B AU - Wang MB FAU - Srivatsan, Eri S AU - Srivatsan ES LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PL - United States TA - Laryngoscope JT - The Laryngoscope JID - 8607378 RN - 0 (Biomarkers, Tumor) RN - 0 (Cyclin-Dependent Kinase Inhibitor p16) RN - 136601-57-5 (Cyclin D1) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Biomarkers, Tumor/*genetics/metabolism MH - Carcinoma, Squamous Cell/*genetics/metabolism MH - Chi-Square Distribution MH - Cyclin D1/*genetics/metabolism MH - Cyclin-Dependent Kinase Inhibitor p16/*genetics/metabolism MH - Female MH - Gene Amplification MH - Gene Deletion MH - Head and Neck Neoplasms/*genetics/metabolism MH - Humans MH - Immunohistochemistry MH - In Situ Hybridization, Fluorescence MH - Male MH - Middle Aged MH - Prognosis MH - Survival Analysis EDAT- 2002/08/01 10:00 MHDA- 2002/09/06 10:01 CRDT- 2002/08/01 10:00 PHST- 2002/08/01 10:00 [pubmed] PHST- 2002/09/06 10:01 [medline] PHST- 2002/08/01 10:00 [entrez] AID - 10.1097/00005537-200203000-00013 [doi] PST - ppublish SO - Laryngoscope. 2002 Mar;112(3):472-81. doi: 10.1097/00005537-200203000-00013.