Abstract
BEAMing is a feasible, accurate, and sensitive method for detection of PIK3CA mutations in circulating tumor DNA in blood. Mutation status of PIK3CA may change between primary tumor and recurrence. The results suggest a new approach for noninvasive determination of current mutation status in patients with metastatic disease. Clin Cancer Res; 18(12); 3209–11. ©2012 AACR.

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