Abstract Library

#3070 Activity and Safety of Avelumab in Merkel Cell Carcinoma: Our Experience

Introduction: Merkel cell carcinoma (MCC) is an aggressive neuroendocrine carcinoma of the skin. The use of checkpoint inhibitors has shown good results in the treatment of advanced MCC. Avelumab is a PD-L1 inhibitor able to prevent the inactivation of the T lymphocytes. We report a serie of consecutive MCC cases treated with Avelumab in two centres

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Giuffrida D

Authors: Puliafito I, Sciacca D, Bonasera A, Blanco G, Iacono F,

Keywords: mcc, avelumab, activity, safety,

#2991 Gastroenteropancreatic (GEP) Neuroendocrine Neoplasia G3 (NEN G3) According to 2019 WHO Classification: A Comprehensive Clinicopathological Characterization Including Mismatch Repair (MMR) Proteins, PDL1 Expression and KRAS/BRAF Status

Introduction: In the 2019 WHO FOR NEN’S classification NETG3 have been distinguished from poorly differentiated neuroendocrine carcinoma (NEC). They are heterogeneous group concerning prognosis and treatment benefit.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author:

Authors: Ruiz G, Graselli J, Golubicki M, Rizzol M,

Keywords: G3 NEN, PD-L1, KRAS, BIOMARKERS,

#2940 Avelumab in Unresectable/Metastatic, Progressive, Poorly Differentiated, Grade 3 Neuroendocrine Carcinomas (NECs)

Introduction: Poorly differentiated, G3 NECs are associated with poor outcomes and have no effective treatment options apart from cytotoxic chemotherapy.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Rodriguez-Freixinos V

Authors: Rodriguez-Freixinos V, Chan D, Doherty M, Wasson K, Iscoe N,

Keywords: Poorly differentiated, G3 NECs, Avelumab, Immunotherapy,

#2796 Avelumab for Advanced Merkel Cell Carcinoma in the Netherlands; A Nationwide Survey

Introduction: Merkel cell carcinoma (MCC) is a rare, tumor of the skin associated with high recurrence rates and poor survival. Clinical trials have shown activity of checkpoint inhibitors targeting programmed death-(ligand)-1 (PD-(L)1). Avelumab is the only PD-L1 inhibitor that has been approved in the Netherlands for advanced/metastatic MCC (mMCC).

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Levy S

Authors: Levy S, Aarts M, Eskens F, Keymeulen K, Been L,

Keywords: Merkel Cell Carcinoma, Avelumab, PD-L1,

#2793 A Phase II, Open-Label, Multicenter Trial of Avelumab in Patients with Advanced, Metastatic High Grade Neuroendocrine Carcinomas NEC G3 (WHO 2010) Progressive after First-line Chemotherapy (AVENEC)

Introduction: High grade Neuroendocrine Neoplasias (NEN) are rare tumors with a poor prognosis and no established second line therapy.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Weber M

Authors: Fottner C, Apostolidis L, Ferrata M, Krug S, Michl P,

Keywords: NEC, NEN G3, check-point inhibitor, Avelumab, anti-PD-L1-antibody, immunotherapy,