The Perils of Single‐Site Genetic Testing for Hereditary Cancer Syndromes in the Era of Next‐Generation Sequencing

AbstractA challenge in counseling patients with a family history suggesting a hereditary cancer syndrome is deciding which genetic tests or panels to order. In this article, we discuss the identification of multiple familial mutations through genetic counseling and panel testing. For patients meeting National Comprehensive Cancer Network criteria for clinical genetic testing, providers should consider expanded panels to provide a more complete assessment of one's genetic risk. The continued use of expanded panel testing in the clinical setting will help inform optimal management of cancer patients, as well as the management of their unaffected family members. The mutation discovered in this case was in the ATM gene. The clinical significance of the mutation, potential therapeutic targets, and proper clinical management are discussed.

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