ArticleFamilial cancer2023
A need to tailor surveillance based on family history: describing a highly penetrant familial paraganglioma kindred with an SDHD pathogenic variant.
Article in Familial cancer, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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9 authors at 2 institutions in 1 country.
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Abstract
Pathogenic variants (PVs) in the SDHD gene increase risk for paragangliomas (PGL)/pheochromocytomas, renal cell carcinomas, and gastrointestinal stromal tumors. Penetrance in individuals with SDHD PVs varies in reported research from 40-70%, and there is limited evidence of specific genotype risks. This study aims to characterize a multi-generational family with SDHD p.Trp43* PVs and potential genotype-phenotype considerations for surveillance. Individuals with a paternally inherited SDHD p.Trp43*(c.129G > A) PV were identified. Genetic, medical and family histories were abstracted, including clinical characteristics, tumor histories, and treatment approaches. Eleven individuals with the SDHD PV in the same kindred were diagnosed with 41 SDHx-related tumors across all family members. Eight individuals developed 27 head and neck PGL of varying origins, and seven individuals developed tumors outside of the head and neck region. Many individuals had multiple tumors, and age of first tumor diagnosis ranged from age 10 to age 45 years old. Individuals with SDHD p.Trp43* variants may have higher risks for SDHx related tumors than other SDHD variants. Prioritizing identification of at-risk individuals and initiating surveillance tailored to family history is recommended given the rate of multiple tumors found in one familial branch of individuals under 18 years old. Individuals with strong family histories of PGL at young ages with this PV will benefit from tailored surveillance recommendations.
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