Abstract Library

#2839 The Second Revision of Clinical Practice Guidelines in GEP-NEN in Japan

Introduction: Japanese Neuroendocrine Tumor Society (JNETS) has published the first edition of clinical practice guidelines in gastroenteropancreatic neuroendocrine neoplasm (GEP-NEN) in 2015. Then, according to an update on the diagnosis and management of GEP-NEN in Japan. Revised clinical practice guidelines, the second edition, has just published in 2019.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author:

Authors: Ito T, Masui T, Komoto I,

Keywords: GEP-NEN, Guideline, Japan,

#2167 Evaluation of Streptozocin-Based Chemotherapeutic Regimens for Advanced Pancreatic Neuroendocrine Tumors: A Multi-Center Clinical Study in Japan

Introduction: Streptozocin (STZ) has been used as a key drug against advanced pancreatic neuroendocrine tumors (pNETs). The standard in many countries is a daily STZ regimen combined with 5-fluorouracil administered once daily for 5 days every 6 weeks. However, in Japan, STZ was only covered by insurance beginning in 2015, and STZ is often used as monotherapy, as either a daily or a weekly regimen. There are few reports on STZ monotherapy for pNETs.

Conference: 15th Annual ENETSConcerence (2018)

Presenting Author:

Authors: Sakamoto Y, Hijioka S, Shibuya H, Ito T, Imamura M,

Keywords: Streptozocin, pNETs,

#2121 Phase II Study of Temozolomide Monotherapy in Patients of Neuroendocrine Carcinoma with Resistant to Platinum-Based Chemotherapy

Introduction: Neuroendocrine carcinomas (NEC) (high grade Ki67 > 20%) were poor prognostic and lethal disease. Platinum-based chemotherapy is usually chosen as a first line treatment for advanced NEC, however, this efficacy is temporary and there is no standard second-line treatment yet. Temozolomide is a good candidate, however it was not approved for NEC by Japanese authorities.

Conference: 15th Annual ENETSConcerence (2018)

Presenting Author:

Authors: Ichikawa Y, Kobayashi N, Tokuhisa M, Goto A, Hiroshima Y,

Keywords: Neuroendocrine Carcinoma, Temozolomide,

#1666 Prognosis and Incidence in Pancreatic and Gastrointestinal Neuroendocrine Neoplasms with Emphasis on “NET G3”: An Analysis of 198 Cases from Japan

Introduction: Prognostic impact of well differentiated pancreatic neuroendocrine neoplasms (PanNENs) with a Ki67 >20%, provisionally called NET G3, needs to be validated and compared to poorly differentiated neuroendocrine carcinomas (NECs). Moreover, the frequency of NET G3 among gastrointestinal NENs (GI-NENs) has so far not been studied.

Conference: 14th Annual ENETSConcerence (2017)

Presenting Author: Kasajima A

Authors: Kasajima A, Tachibana T, Ishida H, Yazdani S, Konukiewitz B,

Keywords: NET G3, GEP-NEN, GI-NET,

#1582 Utility of Serum Chromogranin B Compared with Chromogranin A as a Biomarker in Japanese Patients with Pancreatic Neuroendocrine Tumors

Introduction: Currently, serum chromogranin A (CgA) is used as a biomarker for pancreatic neuroendocrine tumors (pNET); however, oral use of a proton pump inhibitor (PPI) and renal impairment can affect CgA.

Conference: 14th Annual ENETSConcerence (2017)

Presenting Author:

Authors: Miki M, Ito T, Hijioka M, Kawabe K, Jensen R,

Keywords: Pancreatic neuroendocrine tumors, Chromogranin A, Chromogranin B,