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#3387 High tissue expression of Flt3L is linked to higher infiltration of immune cells in patients with high-grade GEP-NEN

Introduction: The clinical management of gastroenteropancreatic neuroendocrine neoplasms (GEP-NEN) remains challenging due to disease heterogeneity. We have recently shown that mRNA expression of the immunostimulatory cytokine FMS-like tyrosine kinase 3 ligand (Flt3L) in tumor tissue is a prognostic biomarker in high-grade GEP-NEN patients. However, a direct link between Flt3L expression and the presence of proinflammatory immune cells in the tumor microenvironment (TME) of GEP-NEN is still missing.

Conference:

Presenting Author: Werner W

Authors: Werner W, Detjen K, Bruneau A, Wiedenmann B, Tacke F,

Keywords: NET, Flt3L, DC, dendritic cell, biomarker, immune response, immune microenvironment,