PMID- 27129795 OWN - NLM STAT- MEDLINE DCOM- 20170214 LR - 20220318 IS - 1873-2933 (Electronic) IS - 0009-9120 (Linking) VI - 49 IP - 12 DP - 2016 Aug TI - High BAX/BCL2 mRNA ratio predicts favorable prognosis in laryngeal squamous cell carcinoma, particularly in patients with negative lymph nodes at the time of diagnosis. PG - 890-6 LID - S0009-9120(16)30038-8 [pii] LID - 10.1016/j.clinbiochem.2016.04.010 [doi] AB - OBJECTIVES: Laryngeal squamous cell carcinoma (LSCC), a common type of head and neck cancer, is associated with high rates of metastasis and recurrence. Therefore, accurate prognostic stratification of LSCC patients based on molecular prognostic tumor biomarkers would definitely lead to a better clinical management of this malignancy. The aim of this study was the investigation of the potential combinatorial prognostic value of BCL2 and BAX mRNA expression in LSCC. DESIGN AND METHODS: Total RNA was isolated from 105 cancerous laryngeal tissue specimens obtained from patients having undergone surgical treatment for primary LSCC. After cDNA preparation, a low-cost, in-house developed, sensitive and accurate real-time quantitative PCR (qPCR) methodology was applied for the quantification of BCL2 and BAX mRNA levels. Then, we carried out a biostatistical analysis to assess the prognostic value of the BAX/BCL2 mRNA expression ratio. RESULTS: High BAX/BCL2 mRNA expression constitutes a favorable prognosticator in LSCC, predicting significantly longer disease-free survival (P=0.011) and overall survival (P=0.014) of patients. More importantly, the significant prognostic value of the BAX/BCL2 mRNA expression appeared to be independent of the histological grade and size of the malignant laryngeal tumor as well as TNM stage, as revealed by the multivariate bootstrap Cox regression analysis. Kaplan-Meier survival analysis demonstrated also that the BAX/BCL2 ratio can stratify node-negative (N0) LSCC patients into two subgroups with significantly different DFS and OS (P=0.021 and P=0.009, respectively). CONCLUSIONS: The BAX/BCL2 mRNA ratio is a putative molecular tissue biomarker in CLL and hence deserves further validation in larger cohorts of LSCC patients. CI - Copyright (c) 2016 The Canadian Society of Clinical Chemists. Published by Elsevier Inc. All rights reserved. FAU - Giotakis, Aris I AU - Giotakis AI AD - First Department of Otorhinolaryngology, Athens General Hospital "Hippokration", National and Kapodistrian University of Athens, Athens GR-11527, Greece. FAU - Kontos, Christos K AU - Kontos CK AD - Department of Biochemistry and Molecular Biology, National and Kapodistrian University of Athens, Athens GR-15701, Greece. FAU - Manolopoulos, Leonidas D AU - Manolopoulos LD AD - First Department of Otorhinolaryngology, Athens General Hospital "Hippokration", National and Kapodistrian University of Athens, Athens GR-11527, Greece. FAU - Sismanis, Aristides AU - Sismanis A AD - First Department of Otorhinolaryngology, Athens General Hospital "Hippokration", National and Kapodistrian University of Athens, Athens GR-11527, Greece. FAU - Konstadoulakis, Manousos M AU - Konstadoulakis MM AD - First Department of Propaedeutic Surgery, Athens General Hospital "Hippokration", National and Kapodistrian University of Athens, Athens GR-11527, Greece. FAU - Scorilas, Andreas AU - Scorilas A AD - Department of Biochemistry and Molecular Biology, National and Kapodistrian University of Athens, Athens GR-15701, Greece. Electronic address: ascorilas@biol.uoa.gr. LA - eng PT - Journal Article DEP - 20160426 PL - United States TA - Clin Biochem JT - Clinical biochemistry JID - 0133660 RN - 0 (BAX protein, human) RN - 0 (BCL2 protein, human) RN - 0 (Biomarkers, Tumor) RN - 0 (Proto-Oncogene Proteins c-bcl-2) RN - 0 (RNA, Messenger) RN - 0 (bcl-2-Associated X Protein) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Biomarkers, Tumor/*genetics MH - Carcinoma, Squamous Cell/genetics/*pathology/surgery MH - Female MH - Follow-Up Studies MH - Humans MH - Laryngeal Neoplasms/genetics/*pathology/surgery MH - Lymph Nodes/metabolism/*pathology MH - Male MH - Middle Aged MH - Neoplasm Grading MH - Neoplasm Staging MH - Prognosis MH - Proto-Oncogene Proteins c-bcl-2/*genetics MH - RNA, Messenger/genetics MH - Real-Time Polymerase Chain Reaction MH - Reverse Transcriptase Polymerase Chain Reaction MH - Survival Rate MH - bcl-2-Associated X Protein/*genetics OTO - NOTNLM OT - BCL2 family OT - Head and neck cancer OT - Molecular tumor biomarker OT - Oral cancer OT - Prognostic biomarker OT - Real-time quantitative PCR EDAT- 2016/05/01 06:00 MHDA- 2017/02/15 06:00 CRDT- 2016/05/01 06:00 PHST- 2015/12/06 00:00 [received] PHST- 2016/03/06 00:00 [revised] PHST- 2016/04/22 00:00 [accepted] PHST- 2016/05/01 06:00 [entrez] PHST- 2016/05/01 06:00 [pubmed] PHST- 2017/02/15 06:00 [medline] AID - S0009-9120(16)30038-8 [pii] AID - 10.1016/j.clinbiochem.2016.04.010 [doi] PST - ppublish SO - Clin Biochem. 2016 Aug;49(12):890-6. doi: 10.1016/j.clinbiochem.2016.04.010. Epub 2016 Apr 26.