PMID- 31357193 OWN - NLM STAT- MEDLINE DCOM- 20210215 LR - 20210215 IS - 1423-0194 (Electronic) IS - 0028-3835 (Print) IS - 0028-3835 (Linking) VI - 110 IP - 5 DP - 2020 TI - A Phase II Study of Ibrutinib in Advanced Neuroendocrine Neoplasms. PG - 377-383 LID - 10.1159/000502383 [doi] AB - BACKGROUND: Ibrutinib is an orally administered inhibitor of Bruton's tyrosine kinase (Btk). Preclinical data suggest that mast cells are recruited within neuroendocrine neoplasms (NENs) where they stimulate angiogenesis and tumor growth. Ibrutinib inhibits mast cell degranulation and has been associated with regression of tumors in a mouse insulinoma model. METHODS: A prospective, phase II trial evaluated patients with advanced gastrointestinal (GI)/lung NENs and pancreatic NENs (pNENs) who had evidence of progression within 12 months of study entry on at least one prior therapy. Patients received ibrutinib 560 mg daily until unacceptable toxicity, progression of disease, or withdrawal of consent. The primary endpoint was objective response rate. RESULTS: Twenty patients were enrolled on protocol from November 2015 to December 2017 (15 advanced GI/lung NENs and 5 pNENs). No patient reached an objective response. Median PFS was 3.0 months. A total of 44 drug-related adverse events (AEs) were captured as probably or definitely associated with ibrutinib. Five patients experienced probably or definitely related grade 3 AEs, and 1 patient experienced a probably related grade 4 AE. Five patients discontinued treatment prior to radiographic assessment. CONCLUSIONS: Ibrutinib does not show significant evidence of activity in well-differentiated gastroenteropancreatic and lung NENs. CI - (c) 2019 S. Karger AG, Basel. FAU - Al-Toubah, Taymeyah AU - Al-Toubah T AD - Department of GI Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA. FAU - Schell, Michael J AU - Schell MJ AD - Department of Biostatistics, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA. FAU - Cives, Mauro AU - Cives M AD - Department of Biomedical Sciences and Human Oncology, University of Bari, Bari, Italy. FAU - Zhou, Jun-Min AU - Zhou JM AD - Department of Biostatistics, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA. FAU - Soares, Heloisa P AU - Soares HP AD - Department of Oncology, University of New Mexico, Albuquerque, New Mexico, USA. FAU - Strosberg, Jonathan R AU - Strosberg JR AD - Department of GI Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA, jonathan.strosberg@moffitt.org. LA - eng GR - P30 CA076292/CA/NCI NIH HHS/United States PT - Clinical Trial, Phase II PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190730 PL - Switzerland TA - Neuroendocrinology JT - Neuroendocrinology JID - 0035665 RN - 0 (Piperidines) RN - 0 (Protein Kinase Inhibitors) RN - 1X70OSD4VX (ibrutinib) RN - EC 2.7.10.2 (Agammaglobulinaemia Tyrosine Kinase) RN - JAC85A2161 (Adenine) SB - IM MH - Adenine/administration & dosage/adverse effects/*analogs & derivatives/pharmacology MH - Adult MH - Agammaglobulinaemia Tyrosine Kinase/*antagonists & inhibitors MH - Aged MH - Carcinoid Tumor/*drug therapy MH - Female MH - Gastrointestinal Neoplasms/*drug therapy MH - Humans MH - Lung Neoplasms/*drug therapy MH - Male MH - Middle Aged MH - Neuroendocrine Tumors/*drug therapy MH - Pancreatic Neoplasms/*drug therapy MH - Piperidines/administration & dosage/adverse effects/*pharmacology MH - Prospective Studies MH - Protein Kinase Inhibitors/administration & dosage/adverse effects/*pharmacology MH - Treatment Failure PMC - PMC7771542 MID - NIHMS1653134 OTO - NOTNLM OT - Carcinoid tumor OT - Ibrutinib OT - Neuroendocrine neoplasm OT - Pancreatic neuroendocrine tumor COIS- Disclosure Statement Dr. Jonathan R. Strosberg has consulted for Novartis and has received honoraria from Ipsen and Lexicon. Dr. Heloisa P. Soares has received honoraria from Novartis, Ipsen, and Lexicon. None of the other authors declares a personal or financial conflict of interest which could affect the outcome of this study. EDAT- 2019/07/30 06:00 MHDA- 2021/02/16 06:00 PMCR- 2021/01/01 CRDT- 2019/07/30 06:00 PHST- 2019/05/06 00:00 [received] PHST- 2019/07/29 00:00 [accepted] PHST- 2019/07/30 06:00 [pubmed] PHST- 2021/02/16 06:00 [medline] PHST- 2019/07/30 06:00 [entrez] PHST- 2021/01/01 00:00 [pmc-release] AID - 000502383 [pii] AID - 10.1159/000502383 [doi] PST - ppublish SO - Neuroendocrinology. 2020;110(5):377-383. doi: 10.1159/000502383. Epub 2019 Jul 30.