FGF19 as a site-specific candidate biomarker in colorectal neuroendocrine carcinomas.
PURPOSE Gastrointestinal neuroendocrine carcinomas (GI-NECs) are aggressive tumors with marked site-specific heterogeneity, yet molecular markers for colorectal origin are lacking. This study characterized genomic and protein expression profiles to identify origin-specific biomarkers. METHODS Nineteen GI-NECs (7 esop...