Tumour risks and genotype-phenotype correlations associated with germline variants in succinate dehydrogenase subunit genes SDHB, SDHC and SDHD
| Autor: | Andrews, Katrina A, Ascher, David B, Pires, Douglas Eduardo Valente, Barnes, Daniel R, Vialard, Lindsey, Casey, Ruth T, Bradshaw, Nicola, Adlard, Julian, Aylwin, Simon, Brennan, Paul, Brewer, Carole, Cole, Trevor, Cook, Jackie A, Davidson, Rosemarie, Donaldson, Alan, Fryer, Alan, Greenhalgh, Lynn, Hodgson, Shirley V, Irving, Richard, Lalloo, Fiona, McConachie, Michelle, McConnell, Vivienne PM, Morrison, Patrick J, Murday, Victoria, Park, Soo-Mi, Simpson, Helen L, Snape, Katie, Stewart, Susan, Tomkins, Susan E, Wallis, Yvonne, Izatt, Louise, Goudie, David, Lindsay, Robert S, Perry, Colin G, Woodward, Emma R, Antoniou, Antonis C, Maher, Eamonn R |
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| Přispěvatelé: | Pires, Douglas Eduardo Valente [0000-0002-3004-2119], Maher, Eamonn R [0000-0002-6226-6918], Apollo - University of Cambridge Repository |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Aged
80 and over Male Heterozygote Sex Characteristics genetic epidemiology Genotype Adrenal Gland Neoplasms Age Factors Mutation Missense Membrane Proteins Kaplan-Meier Estimate Pheochromocytoma Middle Aged cancer: endocrine Paraganglioma Succinate Dehydrogenase Risk Factors molecular genetics oncology Humans genetics Female Genetic Association Studies Germ-Line Mutation Aged |
| Zdroj: | JOURNAL OF MEDICAL GENETICS |
| ISSN: | 0022-2593 1468-6244 |
| Popis: | Background: Germline pathogenic variants in SDHB/\ud SDHC/SDHD are the most frequent causes of inherited\ud phaeochromocytomas/paragangliomas. Insufficient\ud information regarding penetrance and phenotypic\ud variability hinders optimum management of mutation\ud carriers. We estimate penetrance for symptomatic\ud tumours and elucidate genotype–phenotype correlations\ud in a large cohort of SDHB/SDHC/SDHD mutation carriers.\ud Methods: A retrospective survey of 1832 individuals\ud referred for genetic testing due to a personal or family\ud history of phaeochromocytoma/paraganglioma. 876\ud patients (401 previously reported) had a germline\ud mutation in SDHB/SDHC/SDHD (n=673/43/160). Tumour\ud risks were correlated with in silico structural prediction\ud analyses.\ud Results: Tumour risks analysis provided novel\ud penetrance estimates and genotype–phenotype\ud correlations. In addition to tumour type susceptibility\ud differences for individual genes, we confirmed that the\ud SDHD:p.Pro81Leu mutation has a distinct phenotype and\ud identified increased age-related tumour risks with highly\ud destabilising SDHB missense mutations. By Kaplan-Meier\ud analysis, the penetrance (cumulative risk of clinically\ud apparent tumours) in SDHB and (paternally inherited)\ud SDHD mutation-positive non-probands (n=371/67 with\ud detailed clinical information) by age 60 years was 21.8%\ud (95% CI 15.2% to 27.9%) and 43.2% (95% CI 25.4%\ud to 56.7%), respectively. Risk of malignant disease at age\ud 60 years in non-proband SDHB mutation carriers was\ud 4.2%(95% CI 1.1% to 7.2%). With retrospective cohort\ud analysis to adjust for ascertainment, cumulative tumour\ud risks for SDHB mutation carriers at ages 60 years and\ud 80 years were 23.9% (95% CI 20.9% to 27.4%) and\ud 30.6% (95% CI 26.8% to 34.7%).\ud Conclusions: Overall risks of clinically apparent tumours for SDHB mutation carriers are substantially lower than initially estimated and will improve counselling of affected families. Specific genotype-tumour risk associations provides a basis for novel investigative strategies into succinate dehydrogenase-related mechanisms of tumourigenesis and the development of personalised management for SDHB/SDHC/SDHD mutation carriers. |
| Databáze: | OpenAIRE |
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