RT null T1 Advances in the Treatment of Gastroenteropancreatic Neuroendocrine Carcinomas: Are we Moving Forward? A1 García Carbonero, Rocío A1 Anton Pascual, Beatriz A1 Modrego, Andrea A1 Riesco Martinez, Maria del Carmen A1 Lens Pardo, Alberto A1 Carretero Puche, Carlos A1 Rubio Cuesta, Beatriz A1 Soldevilla Navarro, Beatriz AB Poorly differentiated gastroenteropancreatic neuroendocrine carcinomas are aggressive neoplasms of challenging clinical management. A small proportion of patients with early-stage disease may achieve long-term survival, but the majority of patients present with rapidly lethal metastatic disease. Current standard of care still follows the treatment paradigm of small cell lung cancer, a far more common G3 neuroendocrine neoplasm, although emerging molecular and clinical data increasingly question this approach. In this article, we will briefly summarize epidemiology and prognosis of gastroenteropancreatic neuroendocrine carcinomas to emphasize the very low incidence, aggressive nature, and orphan status of this tumor entity. We will also discuss the current pathological classification and its limitations, as well as recent data on their differential biological background compared with small cell lung cancer, and its potential implications for patients care. Then, we will review the standard of care of systemic therapy, basically focused on platinum-based cytotoxic chemotherapy, including some recent randomized trials providing evidence regarding efficacy of irinotecan vs etoposide platinum doublets. Finally, we will present a comprehensive overview of novel therapeutic strategies in current clinical development, including recently reported data on immunotherapy, tumor-agnostic therapies (microsatellite instability, high tumor mutational burden, NTRK and RET gene fusions, BRAF or KRAS inhibitors), and additional treatment strategies targeting other tumor vulnerabilities (ie, Notch pathway, novel targets for radioligand therapy), and provide some insights regarding unmet needs and future perspectives to improve patient's care and prognosis. PB Oxford University Press SN 0163-769X YR 2023 FD 2023 LK https://hdl.handle.net/20.500.14352/121773 UL https://hdl.handle.net/20.500.14352/121773 LA eng NO Rocio Garcia-Carbonero, Beatriz Anton-Pascual, Andrea Modrego, Maria del Carmen Riesco-Martinez, Alberto Lens-Pardo, Carlos Carretero-Puche, Beatriz Rubio-Cuesta, Beatriz Soldevilla, Advances in the Treatment of Gastroenteropancreatic Neuroendocrine Carcinomas: Are we Moving Forward?, Endocrine Reviews, Volume 44, Issue 4, August 2023, Pages 724–736, https://doi.org/10.1210/endrev/bnad006 NO M.R. is partially funded by the AECC (CLSEN19003RIES). A.L.P. is funded by the Instituto de Salud Carlos III (PFIS; FI20/00131). C.C.P. was partially funded by CAM (PEJD-2016-PRE/BMD-2666). B.R.C. was partially funded by CAM (PEJD-2017-PRE/BMD-4981). B.S. is partially funded by the AECC (POSTDO46SOLD, Spain). NO Asociación Española Contra el Cáncer NO Instituto de Salud Carlos III NO Comunidad de Madrid DS Docta Complutense RD 28 jun 2025