Discordance of PIK3CA mutational status between primary and metastatic breast cancer: a systematic review and meta-analysis.
Justus RosinElla SvegrupAntonios ValachisIoannis ZerdesPublished in: Breast cancer research and treatment (2023)
Our results indicate the need of obtaining metastatic biopsies for PIK3CA-mutation analysis and the possibility of testing of the primary tumor, in case a re-biopsy deemed non-feasible.