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ERBB2 amplification status in primary and metastatic samples of a CCC patient cohort.
| Amplified | Not amplified | Total | % Amplified | |
|---|---|---|---|---|
| Primary/local | 3 | 302 | 305 | 1.0 |
| Peritoneal metastasis | 3 | 40 | 43 | 7.0 |
Unmatched patient tumors from primary samples (n = 305) and peritoneal metastases (tissue: n = 43) were tested by NSG to determine ERBB2 amplification validated using CISH. p Value from Fisher exact test.
