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Detection of HER2-related biomarkers before treatment
| Tumor source | HER2 amplification | HER2 V777L (AF, %) |
|---|---|---|
| Left breast lesion | Negative | 40.9 |
| Liver lesion | Negative | – |
| ctDNA | Negative | 33.85 |
Abbreviations: AF, allelic frequency; ctDNA, circulating tumor DNA; HER2, human epidermal growth factor receptor 2.
