Scott M Langevin1, Rondi A Butler2, Melissa Eliot2, Michael Pawlita3, Jennifer Z J Maccani4, Michael D McClean5, Karl T Kelsey6. 1. Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, OH, USA. Electronic address: langevst@uc.edu. 2. Department of Epidemiology, Brown University, Providence, RI, USA. 3. Research Program Infection and Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany. 4. Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, RI, USA; Centers for Behavioral and Preventive Medicine, The Miriam Hospital, Providence, RI, USA. 5. Department of Environmental Health, Boston University School of Public Health, Boston, MA, USA. 6. Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, OH, USA; Department of Pathology and Laboratory Medicine, Brown University, Providence, RI, USA.
Abstract
OBJECTIVES: The objective of this study was to identify novel survival-associated biomarkers in oral rinse samples collected from patients with oral squamous cell carcinoma (OSCC). MATERIALS AND METHODS: We screened for putative survival-associated markers using publicly available methylation array data from 88 OSCC tumors. Cox models were then fit to methylation array data restricted to these putative loci in oral rinse samples of 82 OSCC patients from greater Boston. Pyrosequencing assays were designed for each locus that replicated in the oral rinse samples and applied to a validation set of oral rinse samples from another 61 OSCC patients. RESULTS: We identified 7 survival-associated methylation markers in oral rinse samples from OSCC patients, and have validated one, located in the body of GABBR1, by pyrosequencing. CONCLUSION: The 7 CpG loci identified through this study represent novel prognostic biomarkers for patients with OSCC that can be detected using a non-invasive oral rinse collection technique.
OBJECTIVES: The objective of this study was to identify novel survival-associated biomarkers in oral rinse samples collected from patients with oral squamous cell carcinoma (OSCC). MATERIALS AND METHODS: We screened for putative survival-associated markers using publicly available methylation array data from 88 OSCC tumors. Cox models were then fit to methylation array data restricted to these putative loci in oral rinse samples of 82 OSCC patients from greater Boston. Pyrosequencing assays were designed for each locus that replicated in the oral rinse samples and applied to a validation set of oral rinse samples from another 61 OSCC patients. RESULTS: We identified 7 survival-associated methylation markers in oral rinse samples from OSCC patients, and have validated one, located in the body of GABBR1, by pyrosequencing. CONCLUSION: The 7 CpG loci identified through this study represent novel prognostic biomarkers for patients with OSCC that can be detected using a non-invasive oral rinse collection technique.
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