Abstract
Background: Familial cancer can be defined through the occurrence of the same cancer in two or more family members. We describe a nationwide landscape of familial cancer, including its frequency and the risk that it conveys, by using the largest family database in the world with complete family structures and medically confirmed cancers. Patients/methods: We employed standardized incidence ratios (SIRs) to estimate familial risks for concordant cancer among first-degree relatives using the Swedish Cancer Registry from years 1958 through 2016. Results: Cancer risks in a 20–84 year old population conferred by affected parents or siblings were about two-fold compared to the risk for individuals with unaffected relatives. For small intestinal, testicular, thyroid and bone cancers and Hodgkin disease, risks were higher, five-to-eight-fold. Novel familial associations included adult bone, lip, pharyngeal, and connective tissue cancers. Familial cancers were found in 13.2% of families with cancer; for prostate cancer, the proportion was 26.4%. High-risk families accounted for 6.6% of all cancer families. Discussion/Conclusion: High-risk family history should be exceedingly considered for management, including targeted genetic testing. For the major proportion of familial clustering, where genetic testing may not be feasible, medical and behavioral intervention should be indicated for the patient and their family members, including screening recommendations and avoidance of carcinogenic exposure.
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17 articles.
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1. Mini review: Molecular pathology of personalized medicine in cancer susceptibility syndromes;International Journal of Molecular and Immuno Oncology;2023-09-26
2. Early mortality critically impedes improvements in thyroid cancer survival through a half century;European Journal of Endocrinology;2023-09-01
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4. Reply to Kari Hemminki, Jianguang Ji, and Jan Sundquist’s Letter to the Editor re: Mark N. Brook, Holly Ní Raghallaigh, Koveela Govindasami, et al. Family History of Prostate Cancer and Survival Outcomes in the UK Genetic Prostate Cancer Study. Eur Urol 2023;83:257–66;European Urology;2023-07
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