Constitutional Mutation of PIK3CA: A Variant of Cowden Syndrome?

Abstract excerpt

We present a family in which four individuals have been identified with the same likely pathogenic genetic alteration in the PIK3CA gene at the germinal level; specifically, c.1145G>A p.(Arg382Lys) missense type. The index case patient was diagnosed with multinodular goiter and breast cancer at 61 years old. Among the other three carrier relatives: one has been diagnosed with serous cystadenoma of the ovary and a...

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