PMID- 36638352 OWN - NLM STAT- MEDLINE DCOM- 20230117 LR - 20230117 IS - 1543-0790 (Print) IS - 1543-0790 (Linking) VI - 21 IP - 1 DP - 2023 Jan TI - Treatment landscape of advanced high-grade neuroendocrine neoplasms. PG - 16-26 AB - Grade 3 neuroendocrine neoplasms (NEN G3) are high-grade (Ki-67 index >20%) neuroendocrine malignancies that comprise both rapidly proliferating, well-differentiated neuroendocrine tumors (NET G3) and poorly differentiated neuroendocrine carcinomas (NEC). The phenotypic differences between NET G3 and NEC stem from differences in their underlying genomic alterations. As a result of these differences, NET G3 is molecularly, radiologically, and prognostically distinct from NEC. The optimal management of NET G3 and NEC is currently being refined through clinical trials that focus on NET G3 and NEC as separate entities. This review aims to summarize the current understanding of NEN G3 by distinguishing between NET G3 and NEC and describing the clinical implications associated with each. FAU - Alheraki, Samee Zane AU - Alheraki SZ AD - Division of Hematology and Medical Oncology, Mayo Clinic, Phoenix, Arizona. FAU - Almquist, Daniel R AU - Almquist DR AD - Division of Hematology and Medical Oncology, Sanford Health, Fargo, North Dakota. FAU - Starr, Jason S AU - Starr JS AD - Division of Hematology and Medical Oncology, Mayo Clinic, Jacksonville, Florida. FAU - Halfdanarson, Thorvardur R AU - Halfdanarson TR AD - Division of Medical Oncology, Mayo Clinic, Rochester, Minnesota. FAU - Sonbol, Mohamad Bassam AU - Sonbol MB AD - Division of Hematology and Medical Oncology, Mayo Clinic, Phoenix, Arizona. LA - eng PT - Journal Article PT - Review PL - United States TA - Clin Adv Hematol Oncol JT - Clinical advances in hematology & oncology : H&O JID - 101167661 SB - IM MH - Humans MH - Neoplasm Grading MH - *Neuroendocrine Tumors/diagnosis/genetics/therapy MH - *Pancreatic Neoplasms/drug therapy MH - *Carcinoma, Neuroendocrine/pathology MH - *Stomach Neoplasms/pathology MH - *Intestinal Neoplasms/pathology EDAT- 2023/01/14 06:00 MHDA- 2023/01/18 06:00 CRDT- 2023/01/13 16:22 PHST- 2023/01/13 16:22 [entrez] PHST- 2023/01/14 06:00 [pubmed] PHST- 2023/01/18 06:00 [medline] PST - ppublish SO - Clin Adv Hematol Oncol. 2023 Jan;21(1):16-26.