Abstract Library

#4607 BH3-mimetic drugs elicit cell death of neuroendocrine tumours in preclinical models – An emerging therapeutic strategy for NETs

Introduction: There is an unmet clinical need to identify new, effective therapies for patients with neuroendocrine tumours (NETs). Analysis of single-cell expression data revealed that NETs express high levels of the Bcl2 family of antiapoptotic proteins. Therefore, we hypothesised that proapoptotic drugs, such as BH3-mimetics, can induce programmed cell death, i.e., apoptosis, of neuroendocrine cancer cells.

Conference:

Presenting Author: Michael I

Authors: Kulathunga N, Wang Z, Kale J, Lens A, Tsui H,

Keywords: neuroendocrine tumour, BH3-mimetics, Navitoclax, Cabozantinib, patient-derived organoids, apoptosis, 177Lu-Dotatate,

#4128 Validation of a 3-gene signature of response to axitinib in patients with advanced NETs

Introduction: Axitinib in combination with SSA significantly improved ORR and PFS per central blinded radiological assessment, as compared to placebo and SSA in 253 EP-NETs in the AXINET trial. The magnitude of the benefit, however, was limited. We recently described a 3-gene tumor transcriptomic signature predictive of response to axitinib in NET patients.

Conference:

Presenting Author: Lens-Pardo A

Authors: Lens-Pardo A, Carretero-Puche C, Antón-Pascual B, Capdevila J, Benavent M,

Keywords: axitinib, sunitinib, tyrosine kinase inhibitor, predictive biomarker, signature, elisa,

#4086 Prognostic significance of metabolomics clusters in extra-pancreatic NETs: Lung NET sub-analysis

Introduction: Metabolic flexibility is one of the key hallmarks of cancer and metabolites are the final products of this adaptation, reflecting the aberrant changes that support cancer cells proliferation and survival. In a previous metabolomics study carried out by our group, multiplatform untargeted metabolomic profiling (GC-MS, CE-MS and LC-MS) performed on plasma samples from 77 advanced G1-2 extra-pancreatic NET patients demonstrated that these patients have a distinct metabolomic profile, and identified methionine, porphyrin and tryptophan metabolism as the most relevant dysregulated pathways associated with the prognosis of NETs. Furthermore, a 3-metabolite signature was able to stratify patients in 3 distinct prognostic clusters, with cluster 3 associated with the best prognosis.

Conference:

Presenting Author:

Authors: La Salvia A, Lens-Pardo A, Carretero-Puche C, Capdevila J, Benavent M,

Keywords: metabolimics, prognostic biomarker, lung neuroendocrine tumor, metabolomic signature,

#3814 Intra-individual comparison of 68Ga-DOTATATE PET/CT and PET/MR

Introduction: Somatostatin receptor (SSTR) PET is a cornerstone of modern NET management and is used for (re)staging and PRRT selection. Next to PET/CT, hybrid PET/MR is now available for hybrid imaging of NETs.

Conference:

Presenting Author:

Authors: Ahmadi Bidakhvidi N, Lens G, Vandecaveye V, Grauwels S, Deckers W,

Keywords: 68Ga-DOTATATE, PET/CT, PET/MR,

#3811 Multi-omic factor analysis (MOFA) of well-differentiated neuroendocrine tumors (NETs) from different tumor sites

Introduction: NENs are a heterogeneous family of tumors of wide anatomical distribution that share common clinical and biological traits. Although some studies have characterized the molecular landscape of specific primary locations, there is no cross-site molecular classification of NENs.

Conference:

Presenting Author: Carretero C

Authors: Carretero C, Antón-Pascual B, Lens-Pardo A, Benavent M, Gómez-Izquierdo L,

Keywords: NET, MOFA, multi-omics, clinical features, survival,