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Updated: Oct 16, 2025

Establishment and Characterization of Small Bowel Neuroendocrine Tumor Spheroids
Published on: October 14, 2019
Biomarkers in Small Intestine NETs and Carcinoid Heart Disease: A Comprehensive Review
Markos Kalligeros1, Leonidas Diamantopoulos2, Christos Toumpanakis3
1Department of Medicine, Warren Alpert Medical School of Brown University, Providence, RI 02903, USA.
Abstract:
Biomarkers remain a valuable tool for the diagnosis and management of Neuroendocrine tumors (NETs). Traditional monoanalyte biomarkers such as Chromogranin A (CgA) and 5-Hydrocyondoleacetic acid (5-HIAA) have been widely used for many years as diagnostic, predictive and prognostic biomarkers in the field of NETs. However, the clinical utility of these molecules often has limitations, mainly inherent to the heterogeneity of NETs and the fact that these tumors can often be non-secretory. The development of new molecular multianalyte biomarkers, especially the mRNA transcript based "NETest", has rapidly evolve the field and gives the ability for a "liquid biopsy" which can reliably assess disease status in real time. In this review we discuss the use of established and novel biomarkers in the diagnosis and management of small intestine NETs and carcinoid heart disease.
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