Volume 96, Issue 4 pp. 499-512
ORIGINAL ARTICLE

SDHC phaeochromocytoma and paraganglioma: A UK-wide case series

Sophie T. Williams

Sophie T. Williams

Department of Oncology and Metabolism, University of Sheffield, Sheffield, UK

Department Medical Molecular Genetics, King's College London, Guy's Hospital, London, UK

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Prodromos Chatzikyriakou

Prodromos Chatzikyriakou

Department Medical Molecular Genetics, King's College London, Guy's Hospital, London, UK

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Paul V. Carroll

Paul V. Carroll

Department of Diabetes and Endocrinology, Guy's and St Thomas' NHS Foundation Trust, London, UK

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Barbara M. McGowan

Barbara M. McGowan

Department of Diabetes and Endocrinology, Guy's and St Thomas' NHS Foundation Trust, London, UK

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Anand Velusamy

Anand Velusamy

Department of Diabetes and Endocrinology, Guy's and St Thomas' NHS Foundation Trust, London, UK

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Gemma White

Gemma White

Department of Diabetes and Endocrinology, Guy's and St Thomas' NHS Foundation Trust, London, UK

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Rupert Obholzer

Rupert Obholzer

Department of Ear, Nose, Throat Surgery, Guy's and St Thomas' NHS Foundation Trust, London, UK

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Scott Akker

Scott Akker

Department of Endocrinology, St Bartholomew's Hospital, Barts Health NHS Foundation Trust, Cambridge, UK

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Nicola Tufton

Nicola Tufton

Department of Endocrinology, St Bartholomew's Hospital, Barts Health NHS Foundation Trust, Cambridge, UK

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Ruth T. Casey

Ruth T. Casey

Department of Endocrinology, Cambridge University Hospital NHS Foundation Trust, Cambridge, UK

Department of Medical Genetics, University of Cambridge, Cambridge, UK

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Eamonn R. Maher

Eamonn R. Maher

Department of Medical Genetics, University of Cambridge, Cambridge, UK

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Soo-Mi Park

Soo-Mi Park

Department of Clinical Genetics, Cambridge University Hospital NHS Foundation Trust, Cambridge, UK

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Mary Porteous

Mary Porteous

South East Scotland Genetic Service, Western General Hospital, Edinburgh, Scotland, UK

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Rebecca Dyer

Rebecca Dyer

South East Scotland Genetic Service, Western General Hospital, Edinburgh, Scotland, UK

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Tricia Tan

Tricia Tan

Imperial Centre for Endocrinology, Imperial College Healthcare NHS Trust, London, UK

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Florian Wernig

Florian Wernig

Imperial Centre for Endocrinology, Imperial College Healthcare NHS Trust, London, UK

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Angela F. Brady

Angela F. Brady

North West Thames Regional Genetics Service, Northwick Park Hospital, London, UK

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Monika Kosicka-Slawinska

Monika Kosicka-Slawinska

North West Thames Regional Genetics Service, Northwick Park Hospital, London, UK

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Benjamin C. Whitelaw

Benjamin C. Whitelaw

Department of Endocrinology, King's College Hospital, London, UK

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Huw Dorkins

Huw Dorkins

Department of Clinical Genetics, Leicester Royal Infirmary, Leicester, UK

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Fiona Lalloo

Fiona Lalloo

Manchester Centre for Genomic Medicine, St Mary's Hospital, Manchester, UK

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Paul Brennan

Paul Brennan

Northern Genetics Service, Newcastle Hospitals NHS Foundation Trust, Newcastle, UK

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Joseph Carlow

Joseph Carlow

Northern Genetics Service, Newcastle Hospitals NHS Foundation Trust, Newcastle, UK

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Richard Martin

Richard Martin

Northern Genetics Service, Newcastle Hospitals NHS Foundation Trust, Newcastle, UK

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Anna L. Mitchell

Anna L. Mitchell

Department of Endocrinology, Newcastle upon Tyne NHS Hospitals Foundation Trust, Newcastle, UK

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Rachel Harrison

Rachel Harrison

Department of Clinical Genetics, Nottingham University Hospitals NHS Trust, Nottingham, UK

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Lara Hawkes

Lara Hawkes

Department of Clinical Genetics, Churchill Hospital, Oxford, UK

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John Newell-Price

John Newell-Price

Department of Oncology and Metabolism, University of Sheffield and Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK

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Alan Kelsall

Alan Kelsall

Department of Oncology and Metabolism, University of Sheffield and Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK

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Rebecca Igbokwe

Rebecca Igbokwe

Department of Clinical Genetics, Birmingham Women's Hospital, Birmingham, UK

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Julian Adlard

Julian Adlard

Yorkshire Regional Genetics Service, Chapel Allerton Hospital, Leeds, UK

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Schaida Schirwani

Schaida Schirwani

Yorkshire Regional Genetics Service, Chapel Allerton Hospital, Leeds, UK

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Rosemarie Davidson

Rosemarie Davidson

Department of Clinical Genetics, Queen Elizabeth University Hospital, Glasgow, Scotland, UK

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Patrick J. Morrison

Patrick J. Morrison

Department of Medical Genetics, Belfast City Hospital, Belfast, Northern Ireland, UK

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Teng-Teng Chung

Teng-Teng Chung

Department of Endocrinology, University College London Hospital NHS Foundation Trust, London, UK

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Christopher Bowles

Christopher Bowles

Exeter Genomics Laboratory, Royal Devon and Exeter Hospital, Exeter, UK

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Louise Izatt

Corresponding Author

Louise Izatt

Department Medical Molecular Genetics, King's College London, Guy's Hospital, London, UK

Department of Clinical Genetics, Guy's and St Thomas' NHS Foundation Trust, London, UK

Correspondence Louise Izatt, Department of Clinical Genetics, Guy's and St Thomas' NHS Foundation Trust, London, UK.

Email: [email protected]

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First published: 24 September 2021
Citations: 7

Abstract

Objective

Phaeochromocytomas and paragangliomas (PPGL) are rare, but strongly heritable tumours. Variants in succinate dehydrogenase (SDH) subunits are identified in approximately 25% of cases. However, clinical and genetic information of patients with SDHC variants are underreported.

Design

This retrospective case series collated data from 18 UK Genetics and Endocrinology departments.

Patients

Both asymptomatic and disease-affected patients with confirmed SDHC germline variants are included.

Measurements

Clinical data including tumour type and location, surveillance outcomes and interventions, SDHC genetic variant assessment, interpretation, and tumour risk calculation.

Results

We report 91 SDHC cases, 46 probands and 45 non-probands. Fifty-one cases were disease-affected. Median age at genetic diagnosis was 43 years (range: 11–79). Twenty-four SDHC germline variants were identified including six novel variants. Head and neck paraganglioma (HNPGL, n = 30, 65.2%), extra-adrenal paraganglioma (EAPGL, n = 13, 28.2%) and phaeochromocytomas (PCC) (n = 3, 6.5%) were present. One case had multiple PPGLs. Malignant disease was reported in 19.6% (9/46). Eight cases had non-PPGL SDHC-associated tumours, six gastrointestinal stromal tumours (GIST) and two renal cell cancers (RCC). Cumulative tumour risk (95% CI) at age 60 years was 0.94 (CI: 0.79–0.99) in probands, and 0.16 (CI: 0–0.31) in non-probands, respectively.

Conclusions

This study describes the largest cohort of 91 SDHC patients worldwide. We confirm disease-affected SDHC variant cases develop isolated HNPGL disease in nearly 2/3 of patients, EAPGL and PCC in 1/3, with an increased risk of GIST and RCC. One fifth developed malignant disease, requiring comprehensive lifelong tumour screening and surveillance.

CONFLICT OF INTERESTS

The authors declare that there are no conflict of interests.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available on request from the corresponding author. The data are not publicly available due to privacy or ethical restrictions.

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