FABP1 and Hepar expression levels in Barrett's esophagus and associated neoplasia in an Asian population
Research output: Contribution to journal › Article › peer-review
Colleges, School and Institutes
- Genome Institute of Singapore, A-STAR, Singapore.
- Department of Pathology, Brigham and Women's Hospital, Boston, MA, USA.
- Department of Medicine, National University Health System, Singapore.
- Cancer Science Institute, National University of Singapore
- Departments of Pathology, National University Health System.
- Department of Biological Sciences, National University of Singapore
INTRODUCTION: Barrett's esophagus (BE) is a premalignant condition associated with esophageal adenocarcinoma (EAC). Evidence highlights that EAC is associated with an estimated 5-year survival of approximately 10-15%. Therefore, there is a need to determine which biomarkers are of value in the diagnosis of BE and beyond. The aim of our study was to evaluate the clinical significance of markers known to be expressed across BE and associated neoplasia.
METHODS: Retrospective tissues were obtained from columnar lined esophagus (CLE) without goblet cells (n=22), BE (n=29), dysplasia (n=14), and EAC (n=10). Standardised immunohistochemistry for FABP1, Hepar, CDH17, and CDX2 were performed followed by quantitative staining and statistical analysis.
RESULTS: FABP1 expression was negligible in CLE and was highest in BE, with a further decrease in expression in dysplasia and EAC. Hepar expression was also negligible in CLE and was highest in dysplasia and BE, with a reduced expression in EAC. CDH17 and CDX2 showed a significantly higher expression in BE, dysplasia, and EAC compared to CLE.
CONCLUSION: All 4 markers were excellent diagnostic panels to clearly discriminate BE from CLE. Moreover, as FABP1 and Hepar have different expression levels in dysplasia and EAC, these markers could function as key diagnostic aids in helping to determine the state of disease progression.
|Number of pages||6|
|Journal||Digestive and Liver Disease|
|Early online date||27 Jul 2017|
|Publication status||Published - Oct 2017|
- Adenocarcinoma/metabolism, Adult, Aged, Aged, 80 and over, Antigens, Neoplasm/metabolism, Asian Continental Ancestry Group, Barrett Esophagus/metabolism, Biomarkers, Tumor/metabolism, CDX2 Transcription Factor/metabolism, Cadherins/metabolism, Esophageal Neoplasms/metabolism, Esophagus/metabolism, Fatty Acid-Binding Proteins/metabolism, Female, Humans, Male, Middle Aged, Retrospective Studies