Abstract Library

#4669 Efficacy and safety of [177Lu]Lu-edotreotide vs. everolimus in patients with grade 1 or grade 2 gastroenteropancreatic neuroendocrine tumours: COMPETE phase 3 trial

Introduction: Patients with metastatic gastroenteropancreatic neuroendocrine tumours (GEP-NET) have limited therapeutic options.

Conference:

Presenting Author:

Authors: Capdevila J, Amthauer H, Ansquer C, Deshayes E, Garcia-Carbonero R,

Keywords: radiopharmaceutical therapy, neuroendocrine tumour, [177Lu]Lu-edotreotide, progression-free survival, gastroenteropancreatic,

#4601 Pembrolizumab combined with cisplatin or carboplatin and etoposide in treatment naïve advanced Merkel cell carcinoma (MCC): The phase II PANDORA Trial

Introduction: MCC is a rare and aggressive skin neuroendocrine tumour with high metastatic potential and mortality. Therapeutic options in metastatic/unresectable MCC are based on immunotherapy or platinum-based chemotherapy. However, a subgroup of patients (pts) has primary immunoresistance disease, so it would be important discover active upfront combinations. PANDORA trial [NCT 06086288] is an open-label, multicentre, single-arm phase II trial evaluating the activity and safety of pembrolizumab (PEM) combined with platinum-based chemotherapy as 1st line treatment in pts with metastatic, unresectable or recurrence MCC. Supported in part by a research grant from Investigator-Initiated Studies Program of MSD.

Conference:

Presenting Author: Oldani S

Authors: Oldani S, Morano F, Cingarlini S, Di Giacomo A, Borghesani M,

Keywords: Pembrolizumab, clinical trial, Merkel cell carcinoma, chemio-immunotherapy,

#4417 Efficacy of immune checkpoint inhibitors (ICI) in patients with advanced pancreatic NETs displaying high TMB and MMR alterations following treatment with alkylating agents

Introduction: Alkylating chemotherapy (ALK) is frequently used in patients with PanNETs. It may favour grade progression and acquisition of a hypermutator phenotype associated with frequent alterations of the MMR genes, suggesting a potential benefit of ICI.

Conference:

Presenting Author:

Authors: de Mestier L, Apostolidis L, Koumarianou A, Hernando Cubero J, Riechelmann R,

Keywords: immune checkpoint inhibitor, immunotherapy, hypermutagenicity, alkylating agents, tumour mutational burden, mismatch repair,

#4306 EVENET: Randomised phase II trial of everolimus 5mg vs. 10mg daily in patients with neuroendocrine tumours

Introduction: Everolimus 10mg PO daily is approved for patients (pts) with advanced G1/G2 neuroendocrine tumours (NET) but is associated with significant toxicity, including 20% of serious infections in real-world pts. In phase I trials, 5mg/day was sufficient to inhibit the mTOR pathway. Retrospective data suggest that 5mg/day is similarly effective to 10mg/day but less toxic.

Conference:

Presenting Author:

Authors: Riechelmann R, Campos A, Durant L, Bulzico D,

Keywords: everolimus, neuroendocrine tumour, dose optimisation, toxicity,

#4155 [177Lu]Lu-DOTA-TATE in newly diagnosed patients with advanced grade 2 and grade 3, well-differentiated gastroenteropancreatic neuroendocrine tumors: Primary analysis of the phase 3 randomised NETTER-2 study

Introduction: There is no universally accepted first line (1L) therapy for higher grade, well-differentiated gastroenteropancreatic neuroendocrine tumors (GEP-NETs).

Conference:

Presenting Author: de Herder W

Authors: de Herder W, Halperin D, Myrehaug S, Herrmann K, Pavel M,

Keywords: [177Lu]Lu-DOTA-TATE, Lutathera, Gastroenteropancreatic Neuroendocrine Tumor, NETTER-2,