Optimizing Genetic Workup in Pheochromocytoma and Paraganglioma by Integrating Diagnostic and Research Approaches

Pheochromocytomas and paragangliomas (PPGL) are rare neuroendocrine tumors with a strong hereditary background and a large genetic heterogeneity. Identification of the underlying genetic cause is crucial for the management of patients and their families as it aids differentiation between hereditary...

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Veröffentlicht in:Cancers 2019-06, Vol.11 (6), p.809
Hauptverfasser: Gieldon, Laura, William, Doreen, Hackmann, Karl, Jahn, Winnie, Jahn, Arne, Wagner, Johannes, Rump, Andreas, Bechmann, Nicole, Nölting, Svenja, Knösel, Thomas, Gudziol, Volker, Constantinescu, Georgiana, Masjkur, Jimmy, Beuschlein, Felix, Timmers, Henri Jlm, Canu, Letizia, Pacak, Karel, Robledo, Mercedes, Aust, Daniela, Schröck, Evelin, Eisenhofer, Graeme, Richter, Susan, Klink, Barbara
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container_end_page
container_issue 6
container_start_page 809
container_title Cancers
container_volume 11
creator Gieldon, Laura
William, Doreen
Hackmann, Karl
Jahn, Winnie
Jahn, Arne
Wagner, Johannes
Rump, Andreas
Bechmann, Nicole
Nölting, Svenja
Knösel, Thomas
Gudziol, Volker
Constantinescu, Georgiana
Masjkur, Jimmy
Beuschlein, Felix
Timmers, Henri Jlm
Canu, Letizia
Pacak, Karel
Robledo, Mercedes
Aust, Daniela
Schröck, Evelin
Eisenhofer, Graeme
Richter, Susan
Klink, Barbara
description Pheochromocytomas and paragangliomas (PPGL) are rare neuroendocrine tumors with a strong hereditary background and a large genetic heterogeneity. Identification of the underlying genetic cause is crucial for the management of patients and their families as it aids differentiation between hereditary and sporadic cases. To improve diagnostics and clinical management we tailored an enrichment based comprehensive multi-gene next generation sequencing panel applicable to both analyses of tumor tissue and blood samples. We applied this panel to tumor samples and compared its performance to our current routine diagnostic approach. Routine diagnostic sequencing of 11 PPGL susceptibility genes was applied to blood samples of 65 unselected PPGL patients at a single center in Dresden, Germany. Predisposing germline mutations were identified in 19 (29.2%) patients. Analyses of 28 PPGL tumor tissues using the dedicated PPGL panel revealed pathogenic or likely pathogenic variants in known PPGL susceptibility genes in 21 (75%) cases, including mutations in and . These mutations suggest sporadic tumor development. Our results imply a diagnostic benefit from extended molecular tumor testing of PPGLs and consequent improvement of patient management. The approach is promising for determination of prognostic biomarkers that support therapeutic decision-making.
doi_str_mv 10.3390/cancers11060809
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subjects Age
Breast cancer
Decision making
Genes
Genetic disorders
Genetics
Genomics
Hospitals
Internal medicine
Management
Medical research
Mutation
Neuroendocrine tumors
Next-generation sequencing
Otolaryngology
Ovarian cancer
Paraganglioma
Pathology
Patients
Pheochromocytoma
Tumors
title Optimizing Genetic Workup in Pheochromocytoma and Paraganglioma by Integrating Diagnostic and Research Approaches
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