PMID- 31586182 OWN - NLM STAT- MEDLINE DCOM- 20200727 LR - 20200727 IS - 1945-7197 (Electronic) IS - 0021-972X (Linking) VI - 105 IP - 1 DP - 2020 Jan 1 TI - Lanreotide Therapy vs Active Surveillance in MEN1-Related Pancreatic Neuroendocrine Tumors < 2 Centimeters. LID - dgz007 [pii] LID - 10.1210/clinem/dgz007 [doi] AB - PURPOSE: Pancreatic neuroendocrine tumors (pNETs) are frequent in multiple endocrine neoplasia type 1 (MEN1) syndrome. They are usually not surgically treated unless larger than 1 to 2 cm or a growth rate > 0.5 cm per year. Somatostatin analogues represent one of the main therapeutic options in pNETs, but they have never been prospectively investigated in MEN1-related pNETs. The aim of this study was to prospectively evaluate the effectiveness of lanreotide in patients with MEN1-related pNETs < 2 cm. METHODS: MEN1 patients with 1 or more pNETs < 2 cm of maximal diameter were considered. Study design was prospective observational, comparing patients treated with lanreotide autogel 120 mg every 28 days (LAN group) and patients in active surveillance, not receiving any therapy (AS group). RESULTS: Forty-two patients were enrolled: 23 in LAN and 19 in AS group. Median follow-up was 73 months. Initial imaging identified a total of 91 pNETs. The median progression-free survival was significantly longer in the LAN than in the AS group (median not reached vs 40 months, P < 0.001). In the LAN group, 4 patients had an objective tumor response, 15 patients had stable disease, while 4 had tumor progression. In the AS group, 13 patients had pNET progression, while 6 were stable. CONCLUSIONS: This is the first prospective study evaluating the efficacy of somatostatin analogues in MEN1-related pNETs. These findings highlight that lanreotide autogel is effective as antiproliferative therapy in MEN1-related pNETs < 2cm, suggesting the utility of somatostatin analogues to arrest the development of tumor lesions as well as to delay or avoid pancreatic surgery. CI - (c) Endocrine Society 2019. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com. FAU - Faggiano, Antongiulio AU - Faggiano A AD - Department of Experimental Medicine, Division of Endocrinology, Sapienza University of Rome, Rome, Italy. FAU - Modica, Roberta AU - Modica R AD - Department of Clinical Medicine and Surgery, Division of Endocrinology, University Federico II of Naples, Naples, Italy. FAU - Lo Calzo, Fabio AU - Lo Calzo F AD - Department of Clinical Medicine and Surgery, Division of Endocrinology, University Federico II of Naples, Naples, Italy. FAU - Camera, Luigi AU - Camera L AD - Department of Advanced Biomedical Sciences, Radiology, Section of Diagnostic Imaging, University Federico II of Naples, Naples, Italy. FAU - Napolitano, Vincenzo AU - Napolitano V AD - Endoscopic Surgery, Universita della Campania L. Vanvitelli, Naples, Italy. FAU - Altieri, Barbara AU - Altieri B AD - Department of Clinical Medicine and Surgery, Division of Endocrinology, University Federico II of Naples, Naples, Italy. FAU - de Cicco, Federica AU - de Cicco F AD - Department of Clinical Medicine and Surgery, Division of Endocrinology, University Federico II of Naples, Naples, Italy. FAU - Bottiglieri, Fialomena AU - Bottiglieri F AD - Department of Clinical Medicine and Surgery, Division of Endocrinology, University Federico II of Naples, Naples, Italy. FAU - Sesti, Franz AU - Sesti F AD - Department of Experimental Medicine, Division of Endocrinology, Sapienza University of Rome, Rome, Italy. FAU - Badalamenti, Giuseppe AU - Badalamenti G AD - Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy. FAU - Isidori, Andrea M AU - Isidori AM AD - Department of Experimental Medicine, Division of Endocrinology, Sapienza University of Rome, Rome, Italy. FAU - Colao, Annamaria AU - Colao A AD - Department of Clinical Medicine and Surgery, Division of Endocrinology, University Federico II of Naples, Naples, Italy. LA - eng PT - Comparative Study PT - Journal Article PT - Observational Study PT - Research Support, Non-U.S. Gov't PL - United States TA - J Clin Endocrinol Metab JT - The Journal of clinical endocrinology and metabolism JID - 0375362 RN - 0 (Antineoplastic Agents) RN - 0 (Peptides, Cyclic) RN - 0G3DE8943Y (lanreotide) RN - 51110-01-1 (Somatostatin) SB - IM MH - Adult MH - Aged MH - Antineoplastic Agents/*therapeutic use MH - Case-Control Studies MH - Disease Progression MH - Female MH - Follow-Up Studies MH - Humans MH - Male MH - Middle Aged MH - Multiple Endocrine Neoplasia Type 1/*complications MH - Neuroendocrine Tumors/*drug therapy/etiology/pathology MH - Pancreatic Neoplasms/*drug therapy/etiology/pathology MH - Peptides, Cyclic/*therapeutic use MH - Prognosis MH - Prospective Studies MH - Somatostatin/*analogs & derivatives/therapeutic use MH - Tumor Burden MH - Watchful Waiting/*statistics & numerical data MH - Young Adult OTO - NOTNLM OT - MEN1 OT - active surveillance OT - lanreotide OT - pancreatic neuroendocrine tumors OT - somatostatin analogues EDAT- 2019/10/06 06:00 MHDA- 2020/07/28 06:00 CRDT- 2019/10/06 06:00 PHST- 2019/06/14 00:00 [received] PHST- 2019/09/30 00:00 [accepted] PHST- 2019/10/06 06:00 [pubmed] PHST- 2020/07/28 06:00 [medline] PHST- 2019/10/06 06:00 [entrez] AID - 5581637 [pii] AID - 10.1210/clinem/dgz007 [doi] PST - ppublish SO - J Clin Endocrinol Metab. 2020 Jan 1;105(1):dgz007. doi: 10.1210/clinem/dgz007.