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Fischer A, Kloos S, Maccio U, Friemel J, Remde H, Fassnacht M, Pamporaki C, Eisenhofer G, Timmers HJLM, Robledo M, Fliedner SMJ, Wang K, Maurer J, Reul A, Zitzmann K, Bechmann N, Žygienė G, Richter S, Hantel C, Vetter D, Lehmann K, Mohr H, Pellegata NS, Ullrich M, Pietzsch J, Ziegler CG, Bornstein SR, Kroiss M, Reincke M, Pacak K, Grossman AB, Beuschlein F, Nölting S. Metastatic Pheochromocytoma and Paraganglioma: Somatostatin Receptor 2 Expression, Genetics, and Therapeutic Responses. J Clin Endocrinol Metab 2023; 108:2676-2685. [PMID: 36946182 PMCID: PMC10505550 DOI: 10.1210/clinem/dgad166] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 03/01/2023] [Accepted: 03/17/2023] [Indexed: 03/23/2023]
Abstract
CONTEXT Pheochromocytomas and paragangliomas (PPGLs) with pathogenic mutations in the succinate dehydrogenase subunit B (SDHB) are associated with a high metastatic risk. Somatostatin receptor 2 (SSTR2)-dependent imaging is the most sensitive imaging modality for SDHB-related PPGLs, suggesting that SSTR2 expression is a significant cell surface therapeutic biomarker of such tumors. OBJECTIVE Exploration of the relationship between SSTR2 immunoreactivity and SDHB immunoreactivity, mutational status, and clinical behavior of PPGLs. Evaluation of SSTR-based therapies in metastatic PPGLs. METHODS Retrospective analysis of a multicenter cohort of PPGLs at 6 specialized Endocrine Tumor Centers in Germany, The Netherlands, and Switzerland. Patients with PPGLs participating in the ENSAT registry were included. Clinical data were extracted from medical records, and immunohistochemistry (IHC) for SDHB and SSTR2 was performed in patients with available tumor tissue. Immunoreactivity of SSTR2 was investigated using Volante scores. The main outcome measure was the association of SSTR2 IHC positivity with genetic and clinical-pathological features of PPGLs. RESULTS Of 202 patients with PPGLs, 50% were SSTR2 positive. SSTR2 positivity was significantly associated with SDHB- and SDHx-related PPGLs, with the strongest SSTR2 staining intensity in SDHB-related PPGLs (P = .01). Moreover, SSTR2 expression was significantly associated with metastatic disease independent of SDHB/SDHx mutation status (P < .001). In metastatic PPGLs, the disease control rate with first-line SSTR-based radionuclide therapy was 67% (n = 22, n = 11 SDHx), and with first-line "cold" somatostatin analogs 100% (n = 6, n = 3 SDHx). CONCLUSION SSTR2 expression was independently associated with SDHB/SDHx mutations and metastatic disease. We confirm a high disease control rate of somatostatin receptor-based therapies in metastatic PPGLs.
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Affiliation(s)
- Alessa Fischer
- Department of Endocrinology, Diabetology and Clinical Nutrition, University Hospital Zurich (USZ), and University of Zurich (UZH), CH-8091 Zurich, Switzerland
| | - Simon Kloos
- Department of Endocrinology, Diabetology and Clinical Nutrition, University Hospital Zurich (USZ), and University of Zurich (UZH), CH-8091 Zurich, Switzerland
| | - Umberto Maccio
- Department of Pathology and Molecular Pathology, University Hospital Zurich, CH-8091 Zurich, Switzerland
| | - Juliane Friemel
- Department of Pathology and Molecular Pathology, University Hospital Zurich, CH-8091 Zurich, Switzerland
| | - Hanna Remde
- Department of Internal Medicine I, Division of Endocrinology and Diabetes, University Hospital, University of Würzburg, 97080 Würzburg, Germany
| | - Martin Fassnacht
- Department of Internal Medicine I, Division of Endocrinology and Diabetes, University Hospital, University of Würzburg, 97080 Würzburg, Germany
| | - Christina Pamporaki
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
| | - Graeme Eisenhofer
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
| | - Henri J L M Timmers
- Division of Endocrinology, Department of Internal Medicine, Radboud University Medical Center, 6525 GA Nijmegen, Netherlands
| | - Mercedes Robledo
- Hereditary Endocrine Cancer Group, Spanish National Cancer Research Center (CNIO), Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras, Madrid, Spain
| | - Stephanie M J Fliedner
- First Department of Medicine, University Medical Center Schleswig-Holstein, 23538 Lübeck, Germany
| | - Katharina Wang
- Department of Medicine IV, University Hospital, Ludwig-Maximilians-University Munich, 80336 Munich, Germany
| | - Julian Maurer
- Department of Medicine IV, University Hospital, Ludwig-Maximilians-University Munich, 80336 Munich, Germany
| | - Astrid Reul
- Department of Endocrinology, Diabetology and Clinical Nutrition, University Hospital Zurich (USZ), and University of Zurich (UZH), CH-8091 Zurich, Switzerland
| | - Kathrin Zitzmann
- Department of Medicine IV, University Hospital, Ludwig-Maximilians-University Munich, 80336 Munich, Germany
| | - Nicole Bechmann
- Institute of Clinical Chemistry and Laboratory Medicine, University Hospital Carl Gustav Carus, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstrasse, 01307 Dresden, Germany
| | - Gintarė Žygienė
- Institute of Clinical Chemistry and Laboratory Medicine, University Hospital Carl Gustav Carus, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstrasse, 01307 Dresden, Germany
| | - Susan Richter
- Institute of Clinical Chemistry and Laboratory Medicine, University Hospital Carl Gustav Carus, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstrasse, 01307 Dresden, Germany
| | - Constanze Hantel
- Department of Endocrinology, Diabetology and Clinical Nutrition, University Hospital Zurich (USZ), and University of Zurich (UZH), CH-8091 Zurich, Switzerland
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
| | - Diana Vetter
- Department of Visceral and Transplantation Surgery, University Hospital, 8091 Zürich, Switzerland
| | - Kuno Lehmann
- Department of Visceral and Transplantation Surgery, University Hospital, 8091 Zürich, Switzerland
| | - Hermine Mohr
- Institute for Diabetes and Cancer, Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Natalia S Pellegata
- Institute for Diabetes and Cancer, Helmholtz Zentrum München, 85764 Neuherberg, Germany
- Department of Biology and Biotechnology, University of Pavia, 27100 Pavia, Italy
| | - Martin Ullrich
- Department of Radiopharmaceutical and Chemical Biology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
| | - Jens Pietzsch
- Department of Radiopharmaceutical and Chemical Biology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
- Faculty of Chemistry and Food Chemistry, School of Science, Technische Universität Dresden, Dresden, Germany
| | - Christian G Ziegler
- Department of Internal Medicine I, Division of Endocrinology and Diabetes, University Hospital, University of Würzburg, 97080 Würzburg, Germany
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
| | - Stefan R Bornstein
- Department of Endocrinology, Diabetology and Clinical Nutrition, University Hospital Zurich (USZ), and University of Zurich (UZH), CH-8091 Zurich, Switzerland
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
| | - Matthias Kroiss
- Department of Medicine IV, University Hospital, Ludwig-Maximilians-University Munich, 80336 Munich, Germany
| | - Martin Reincke
- Department of Medicine IV, University Hospital, Ludwig-Maximilians-University Munich, 80336 Munich, Germany
| | - Karel Pacak
- Section on Medical Neuroendocrinology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Rockville, MD 20847, USA
| | - Ashley B Grossman
- Green Templeton College, University of Oxford, Oxford, UK
- NET Unit, ENETS Centre of Excellence, Royal Free Hospital, London, UK
| | - Felix Beuschlein
- Department of Endocrinology, Diabetology and Clinical Nutrition, University Hospital Zurich (USZ), and University of Zurich (UZH), CH-8091 Zurich, Switzerland
- Department of Medicine IV, University Hospital, Ludwig-Maximilians-University Munich, 80336 Munich, Germany
| | - Svenja Nölting
- Department of Endocrinology, Diabetology and Clinical Nutrition, University Hospital Zurich (USZ), and University of Zurich (UZH), CH-8091 Zurich, Switzerland
- Department of Medicine IV, University Hospital, Ludwig-Maximilians-University Munich, 80336 Munich, Germany
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