Source: GenomeWeb Daily News By Andrea Anderson CHICAGO– Researchers are making progress using high-throughput strategies to find previously unappreciated genetic and epigenetic quirks in head and neck cancer — including changes that may prove useful for diagnosing and tracking disease. Johns Hopkins University head and neck cancer research director David Sidransky described some of the work during an education session on molecular biology, targets, and pathways involved in head and neck cancer at the American Society of Clinical Oncology annual meeting here yesterday. Speaking during the same session, JHU oncologist Christine Chung and the University of Chicago's Ezra Cohen touched on strategies for targeting the types of mutations previously reported in head and neck cancer and the rationale behind targeted therapeutics already being tested or considered for the disease, respectively. Past studies have uncovered muted DNA methylation across the genomes of several cancer types, Sidransky explained, though methylation is also bumped up at specific sites in certain tumor types. Consequently, he said, researchers are using strategies such as real-time quantitative methylation-specific PCR (real-time QMSP) to look at methylation shifts in head and neck squamous cell carcinoma. In particular, he described work comparing methylation patterns in saliva and serum samples from individuals with HNSCC to those in samples from more than 800 apparently healthy individuals who are considered 'at-risk' of the disease because of smoking status and other exposures. At least two genes — KIF1A and EDNRB — seem to be more highly methylated in samples from those with HNSCC than [...]