Rare PIK3CA hotspot mutations in carcinomas of the biliary tract.

Abstract excerpt

Somatic mutations of the PIK3CA gene, which encodes the p110alpha catalytic subunit of phosphatidylinositol 3-kinase (PI3K), are frequent in various cancer types. The majority of mutations cluster at hotspots within exons 9 and 20, which encode the helical and kinase domains of p110alpha. PIK3CA mutations in bile duct and gallbladder carcinomas have not been reported yet. In this study, we analysed 118 carcinomas...

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