Intrinsic Gene Programs in Metastasis-like Primary Subtype Is Associated with Early Metastatic Evolution in Pancreatic Neuroendocrine Tumours

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Introduction: Three molecular subtypes of pancreatic neuroendocrine tumours (PanNETs) have been described: insulinoma-like, intermediate and metastasis-like primary (MLP). The Latter is a non-functional tumours with highly metastatic potential. A mouse model of PanNET showed that MLP subtype has two different pathways of progression including stem/progenitor and epithelial-to-mesenchymal transition. However, the evolution of metastasis in patients requires further studies.

Aim(s): To determine if MLP subtype-specific early metastasis is due to its intrinsic metastatic/stemness gene programs using in silico statistical modelling of gene expression and patient survival data.

Materials and methods: We analysed the gene expression profiles of 65 (of >200) PanNETs with molecular subtypes and clinical information and outcomes. In silico modelling was performed using a novel cause-effect tool, and univariate and multivariate statistics.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Sadanandam A

Authors: Sadanandam A, Lawlor R, Nyamundanda G, Ragulan C, Scarpa A,

Keywords: Pancreatic neuroendocrine tumors, metastasis, metastatic evolution, early metastasis, recurrence, prognosis, Patient tumours, cause and effect relationship, computational modeling, molecular subtypes, stages, metastatic potential,