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Comparison of primary tumor and metastatic tissue by HER2 status (PRIM-HER2 and MET-HER2 status, respectively)
| Total | MET-HER2-negative | MET-HER2-positive | |
|---|---|---|---|
| PRIM-HER2 status (total) | 46 (100 %) | 40/46 (87 %) | 6/46 (13 %) |
| Negative | 42/46 (91 %) | 37/42 (88 %) | 5/42 (12 %) |
| Positive | 4/46 (9 %) | 3/4 (7 %) | 1/4 (25 %) |
Overall accuracy of MET-HER2 and PRIM-HER2 status: 83 %
