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Mulders MCF, de Herder WW, Hofland J. What Is Carcinoid Syndrome? A Critical Appraisal of Its Proposed Mediators. Endocr Rev 2024; 45:351-360. [PMID: 38038364 PMCID: PMC11074795 DOI: 10.1210/endrev/bnad035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 10/30/2023] [Accepted: 11/29/2023] [Indexed: 12/02/2023]
Abstract
Carcinoid syndrome (CS) is a debilitating disease that affects approximately 20% of patients with neuroendocrine neoplasms (NEN). Due to the increasing incidence and improved overall survival of patients with NEN over recent decades, patients are increasingly suffering from chronic and refractory CS symptoms. At present, symptom control is hampered by an incomplete understanding of the pathophysiology of this syndrome. This systematic review is the first to critically appraise the available evidence for the various hormonal mediators considered to play a causative role in CS. Overall, evidence for the putative mediators of CS was scarce and often of poor quality. Based on the available literature, data are only sufficient to agree on the role of serotonin as a mediator of CS-associated diarrhea and fibrosis. A direct role for tachykinins and an indirect role of catecholamines in the pathogenesis of CS is suggested by several studies. Currently, there is insufficient evidence to link histamine, bradykinin, kallikrein, prostaglandins, or motilin to CS. To summarize, available literature only sufficiently appoints serotonin and suggests a role for tachykinins and catecholamines as mediators of CS, with insufficient evidence for other putative mediators. Descriptions of CS should be revised to focus on these proven hormonal associations to be more accurate, and further research is needed into other potential mediators.
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Affiliation(s)
- Merijn C F Mulders
- ENETS Center of Excellence, Section of Endocrinology, Department of Internal Medicine, Erasmus MC & Erasmus MC Cancer Institute, 3015 GD Rotterdam, The Netherlands
| | - Wouter W de Herder
- ENETS Center of Excellence, Section of Endocrinology, Department of Internal Medicine, Erasmus MC & Erasmus MC Cancer Institute, 3015 GD Rotterdam, The Netherlands
| | - Johannes Hofland
- ENETS Center of Excellence, Section of Endocrinology, Department of Internal Medicine, Erasmus MC & Erasmus MC Cancer Institute, 3015 GD Rotterdam, The Netherlands
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Slott C, Langer SW, Møller S, Krogh J, Klose M, Hansen CP, Kjaer A, Holmager P, Garbyal RS, Knigge U, Andreassen M. Outlook for 615 Small Intestinal Neuroendocrine Tumor Patients: Recurrence Risk after Surgery and Disease-Specific Survival in Advanced Disease. Cancers (Basel) 2024; 16:204. [PMID: 38201631 PMCID: PMC10778333 DOI: 10.3390/cancers16010204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 12/08/2023] [Accepted: 12/28/2023] [Indexed: 01/12/2024] Open
Abstract
BACKGROUND Small intestinal neuroendocrine tumors (siNET) are one of the most common neuroendocrine neoplasms. Radical surgery is the only curative treatment. METHOD We utilized a single-center study including consecutive patients diagnosed from 2000 to 2020 and followed them until death or the end of study. Disease-specific survival and recurrence-free survival (RFS) were investigated by Cox regression analyses with the inclusion of prognostic factors. Aims/primary outcomes: We identified three groups: (1) disease specific-survival in the total cohort (group1), (2) RFS and disease-specific survival after intended radical surgery (group2), (3) disease specific-survival in patients with unresectable disease or residual tumor after primary resection (group3). RESULTS In total, 615 patients, with a mean age (SD) 65 ± 11 years were included. Median (IQR) Ki-67 index was 4 (2-7)%. Median disease-specific survival in group1 was 130 months. Median RFS in group2 was 138 months with 5- and 10-year RFS rates of 72% and 59% with age, plasma chromogranin A (p-CgA) and Ki-67 index as prognostic factors. The ten year disease-specific survival rate in group2 was 86%. The median disease-specific survival in group3 was 85 months with age, Ki-67 index, p-CgA and primary tumor resection as prognostic factors. When proliferation was expressed by WHO grade, no difference was observed between G1 vs. G2 for any of the primary outcomes. CONCLUSIONS Recurrence rates remained high 5-10 years after surgery (group2) supporting long-term follow-up. Median disease-specific survival in patient with unresectable disease (group3) was 7 years, with a favorable impact of primary tumor resection. Our data does not support the current grading system since no significant prognostic information was detected in G1 vs. G2 tumors.
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Affiliation(s)
- Cecilie Slott
- ENETS Center of Excellence, Copenhagen University Hospital—Rigshospitalet, 2100 Copenhagen, Denmark; (C.S.); (S.W.L.); (S.M.); (J.K.); (M.K.); (C.P.H.); (A.K.); (P.H.); (R.S.G.); (U.K.)
- Department of Endocrinology and Metabolism, Copenhagen University Hospital—Rigshospitalet, 2100 Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Seppo W. Langer
- ENETS Center of Excellence, Copenhagen University Hospital—Rigshospitalet, 2100 Copenhagen, Denmark; (C.S.); (S.W.L.); (S.M.); (J.K.); (M.K.); (C.P.H.); (A.K.); (P.H.); (R.S.G.); (U.K.)
- Department of Clinical Medicine, University of Copenhagen, 2200 Copenhagen, Denmark
- Department of Oncology, Copenhagen University Hospital—Rigshospitalet, 2100 Copenhagen, Denmark
| | - Stine Møller
- ENETS Center of Excellence, Copenhagen University Hospital—Rigshospitalet, 2100 Copenhagen, Denmark; (C.S.); (S.W.L.); (S.M.); (J.K.); (M.K.); (C.P.H.); (A.K.); (P.H.); (R.S.G.); (U.K.)
- Department of Endocrinology and Metabolism, Copenhagen University Hospital—Rigshospitalet, 2100 Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Jesper Krogh
- ENETS Center of Excellence, Copenhagen University Hospital—Rigshospitalet, 2100 Copenhagen, Denmark; (C.S.); (S.W.L.); (S.M.); (J.K.); (M.K.); (C.P.H.); (A.K.); (P.H.); (R.S.G.); (U.K.)
- Department of Endocrinology and Metabolism, Copenhagen University Hospital—Rigshospitalet, 2100 Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Marianne Klose
- ENETS Center of Excellence, Copenhagen University Hospital—Rigshospitalet, 2100 Copenhagen, Denmark; (C.S.); (S.W.L.); (S.M.); (J.K.); (M.K.); (C.P.H.); (A.K.); (P.H.); (R.S.G.); (U.K.)
- Department of Endocrinology and Metabolism, Copenhagen University Hospital—Rigshospitalet, 2100 Copenhagen, Denmark
| | - Carsten Palnæs Hansen
- ENETS Center of Excellence, Copenhagen University Hospital—Rigshospitalet, 2100 Copenhagen, Denmark; (C.S.); (S.W.L.); (S.M.); (J.K.); (M.K.); (C.P.H.); (A.K.); (P.H.); (R.S.G.); (U.K.)
- Department of Surgery and Transplantation, Copenhagen University Hospital—Rigshospitalet, 2100 Copenhagen, Denmark
| | - Andreas Kjaer
- ENETS Center of Excellence, Copenhagen University Hospital—Rigshospitalet, 2100 Copenhagen, Denmark; (C.S.); (S.W.L.); (S.M.); (J.K.); (M.K.); (C.P.H.); (A.K.); (P.H.); (R.S.G.); (U.K.)
- Department of Clinical Medicine, University of Copenhagen, 2200 Copenhagen, Denmark
- Department of Clinical Physiology and Nuclear Medicine & Cluster for Molecular Imaging, Copenhagen University Hospital—Rigshospitalet, 2100 Copenhagen, Denmark
- Department of Biomedical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Pernille Holmager
- ENETS Center of Excellence, Copenhagen University Hospital—Rigshospitalet, 2100 Copenhagen, Denmark; (C.S.); (S.W.L.); (S.M.); (J.K.); (M.K.); (C.P.H.); (A.K.); (P.H.); (R.S.G.); (U.K.)
- Department of Endocrinology and Metabolism, Copenhagen University Hospital—Rigshospitalet, 2100 Copenhagen, Denmark
| | - Rajendra Singh Garbyal
- ENETS Center of Excellence, Copenhagen University Hospital—Rigshospitalet, 2100 Copenhagen, Denmark; (C.S.); (S.W.L.); (S.M.); (J.K.); (M.K.); (C.P.H.); (A.K.); (P.H.); (R.S.G.); (U.K.)
- Department of Pathology, Copenhagen University Hospital—Rigshospitalet, 2100 Copenhagen, Denmark
| | - Ulrich Knigge
- ENETS Center of Excellence, Copenhagen University Hospital—Rigshospitalet, 2100 Copenhagen, Denmark; (C.S.); (S.W.L.); (S.M.); (J.K.); (M.K.); (C.P.H.); (A.K.); (P.H.); (R.S.G.); (U.K.)
- Department of Endocrinology and Metabolism, Copenhagen University Hospital—Rigshospitalet, 2100 Copenhagen, Denmark
- Department of Surgery and Transplantation, Copenhagen University Hospital—Rigshospitalet, 2100 Copenhagen, Denmark
| | - Mikkel Andreassen
- ENETS Center of Excellence, Copenhagen University Hospital—Rigshospitalet, 2100 Copenhagen, Denmark; (C.S.); (S.W.L.); (S.M.); (J.K.); (M.K.); (C.P.H.); (A.K.); (P.H.); (R.S.G.); (U.K.)
- Department of Endocrinology and Metabolism, Copenhagen University Hospital—Rigshospitalet, 2100 Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, 2200 Copenhagen, Denmark
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Tsoli M, Koumarianou A, Angelousi A, Kaltsas G. Established and novel circulating neuroendocrine tumor biomarkers for diagnostic, predictive and prognostic use. Best Pract Res Clin Endocrinol Metab 2023; 37:101785. [PMID: 37336711 DOI: 10.1016/j.beem.2023.101785] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
Abstract
The management of neuroendocrine tumors (NETs) represents a clinical challenge due to heterogeneity of their clinical behaviour, molecular biology and response to treatment. Over the years, several circulating biomarkers have been developed for the early diagnosis and follow-up of NETs. The specific secretory products of tumors associated with a secretory syndrome (functioning tumors) may be used as diagnostic and/or prognostic biomarkers while the most common non-specific circulating biomarkers, that may be increased in both functioning and non-functioning tumors, are chromogranin A and the neuron specific enolase. However, the diagnostic accuracy as well as the prognostic and predictive value of these biomarkers are limited and novel techniques of multianalyte analysis of regulators of tumor biology have been developed. The NETest has been most extensively studied and proved to be useful in NET diagnosis, early detection of post-operative recurrence and prediction of response to treatment but further investigation establishing higher level of evidence is required for implementation in clinical practice.
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Affiliation(s)
- Marina Tsoli
- Neuroendocrine Tumour Unit, ENETS Centre of Excellence, 1st Department of Propaedeutic and Internal Medicine, Laiko Hospital, National and Kapodistrian University of Athens, 11527, Greece.
| | - Anna Koumarianou
- Haematology-Oncology Unit, Fourth Department of Internal Medicine, Attikon Hospital, National and Kapodistrian University of Athens, 12462, Greece
| | - Anna Angelousi
- Unit of Endocrinology, First Department of Internal Medicine, Laiko Hospital, National and Kapodistrian University of Athens, 11527, Greece
| | - Gregory Kaltsas
- Neuroendocrine Tumour Unit, ENETS Centre of Excellence, 1st Department of Propaedeutic and Internal Medicine, Laiko Hospital, National and Kapodistrian University of Athens, 11527, Greece
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The Role of Somatostatin Analogues in the Control of Diarrhea and Flushing as Markers of Carcinoid Syndrome: A Systematic Review and Meta-Analysis. J Pers Med 2023; 13:jpm13020304. [PMID: 36836538 PMCID: PMC9959441 DOI: 10.3390/jpm13020304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 01/27/2023] [Accepted: 02/06/2023] [Indexed: 02/11/2023] Open
Abstract
BACKGROUND Somatostatin analogues (SSAs) are the cornerstone of treatment for carcinoid syndrome (CS)-related symptoms. The aim of this systematic review and meta-analysis is to evaluate the percentage of patients achieving partial (PR) or complete response (CR) with the use of long-acting SSAs in patients with CS. METHODS A systematic electronic literature search was conducted in PubMed, Cochrane, and Scopus to identify eligible studies. Any clinical trials reporting data on the efficacy of SSAs to alleviate symptoms in adult patients were considered as potentially eligible. RESULTS A total of 17 studies reported extractable outcomes (PR/CR) for quantitative synthesis. The pooled percentage of patients with PR/CR for diarrhea was estimated to be 0.67 (95% confidence interval (CI): 0.52-0.79, I2 = 83%). Subgroup analyses of specific drugs provided no evidence of a differential response. With regards to flushing, the pooled percentage of patients with PR/CR was estimated to be 0.68 (95% CI: 0.52-0.81, I2 = 86%). Similarly, no evidence of a significant differential response in flushing control was documented. CONCLUSIONS We estimate there is a 67-68% overall reduction in symptoms of CS associated with SSA treatment. However, significant heterogeneity was detected, possibly revealing differences in the disease course, in management and in outcome definition.
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