期刊
CLINICAL ENDOCRINOLOGY
卷 78, 期 6, 页码 898-906出版社
WILEY
DOI: 10.1111/cen.12074
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资金
- Birmingham Women's Hospital Springboard Fellowship
- MRC
- NIHR
- Manchester BRC
- MRC [G1001967] Funding Source: UKRI
- Medical Research Council [G1001967] Funding Source: researchfish
- National Institute for Health Research [DHCS/06/06/013] Funding Source: researchfish
Objectives Research studies have reported that about a third of individuals with phaeochromocytoma/paraganglioma (PPGL) have an inherited predisposition, although the frequency of specific mutations can vary between populations. We evaluated VHL, SDHB and SDHD mutation testing in cohorts of patients with non-syndromic PPGL and head and neck paraganglioma (HNPGL). Design Prospective, observational evaluation of NHS practice. Patients Individuals with PPGL/HNPGL referred to a supraregional genetics testing service over a 10-year period. Measurements Clinical (age, tumour site, malignancy, etc.), mutation frequencies and characteristics. Results A total of 501 probands with PPGL (n=413) or HNPGL (n=88) were studied. Thirty-one percent of patients with PPGL presented had a pathogenic mutation in SDHB, SDHD or VHL. Mutation detection rates were highest in those with a positive family history (62%), malignancy (53%), multiple tumours (33%) or PGL (44%). Twenty-eight percent of individuals with a single sporadic phaeochromocytoma had a mutation. Overall, 63% of patients with HNPGL had a mutation (92% of those with a family history, 89% of those with multicentric tumours and 34% of those with a single sporadic HNPGL). Penetrance was calculated in 121 SDHB mutation-positive probands and 187 of their mutation-positive relatives. Most relatives were asymptomatic and lifetime penetrance in non-proband SDHB mutation carriers was <50%. Conclusions Practice-based evaluations of genetic testing in PPGL reveal high mutation detection rates. Although clinical criteria can be used to prioritize mutation testing, mutations were detected in low risk groups' indicating a need for comprehensive and inexpensive genetic testing strategies for PPGL and HNPGL.
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