Mayo Clinic Laboratory and Pathology Research Roundup: June 11

By Kelley Luedke • June 11, 2018

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The Research Roundup provides an overview of the past week’s research from Mayo Medical Laboratories consultants, including featured abstracts and complete list of published studies and reviews.

Featured Abstract

Detection of Gastric Cancer with Novel Methylated DNA Markers: Discovery, Tissue Validation, and Pilot Testing in Plasma

Gastric adenocarcinoma (GAC) is the third most common cause of cancer mortality worldwide. Accurate and affordable non-invasive detection methods have potential value for screening and surveillance. Mayo Clinic researchers identify novel methylated DNA markers (MDMs) for GAC, validate their discrimination for GAC in tissues from geographically separate cohorts, explore marker acquisition through the oncogenic cascade, and describe distributions of candidate MDMs in plasma from GAC cases and normal controls. Following discovery by unbiased whole methylome sequencing, candidate MDMs were validated by blinded methylation-specific PCR in archival case-control tissues from U.S. and South Korean patients. Top MDMs were then assayed by an analytically sensitive method (quantitative real-time allele-specific target and signal amplification) in a blinded pilot study on archival plasma from GAC cases and normal controls. Based on the findings, novel MDMs appear to accurately discriminate GAC from normal controls in both tissue and plasma. The point of aberrant methylation during oncogenesis varies by MDM, which may have relevance to marker selection in clinical applications. Further exploration of these MDMs for GAC screening and surveillance is warranted. The study was published in Clinical Cancer Research.

Published to PubMed This Week

• • • • • Editorial: Special Issue on Immunohistochemical Biomarkers in Endocrine Pathology
          Endocrine Pathology
        • Adrenocortical Carcinoma in Children: A Clinicopathological Analysis of 41 Patients at the Mayo Clinic from 1950 to 2017
          Hormone Research in Paediatrics
        • Identification of Bodies by Unique Serial Numbers on Implanted Medical Devices
          Journal of Forensic Sciences
        • Autoimmune GFAP Astrocytopathy: Prospective Evaluation of 90 Patients in 1  Year
          Journal of Neuroimmunology
        • Nasal Vestibulitis: An Under-Recognized and Under-Treated Side Effect of Cancer Treatment?
          Support Care Cancer
        • Challenges in Managing Epilepsy Associated with Focal Cortical Dysplasia in Children
          Epilepsy Research
        • False-Positive Amphetamine Results on Several Drug Screening Platforms Due to Mexiletine
          Clinical Biochemistry

Kelley Luedke

Kelley Luedke is a Marketing Channel Manager at Mayo Clinic Laboratories. She is the principle editor and writer of Insights and leads social media and direct marketing strategy. Kelley has worked at Mayo Clinic since 2013. Outside of work, you can find Kelley running, traveling, playing with her kitty, and exploring new foods.