Table 1. Detection of ctDNA in plasma samples obtained from patients just before surgery to remove primary tumour (“pre-op”) and within five days after surgery (“post-op”).
| Patient | ctDNA fraction |
Days after surgery | |
|---|---|---|---|
| Pre-op | Post-op | ||
| Early stage cancer, curative-intent surgery | |||
| 130 | 0.0022 | ND | 3 |
| 206 | 0.0006 | ND | 4 |
| 405 | 0.0047 | ND | 4 |
| 410 | 0.0011 | — | — |
| 417 | ND | ND | 5 |
| 440 | 0.0107 | ND | 4 |
| 441 | ND | ND | 4 |
| 442 | 0.0019 | — | — |
| 478 | 0.0050 | ND | 3 |
| 480 | 0.0015 | ND | 4 |
| 486 | 0.0065 | ND | 4 |
| 495 | 0.0038 | ND | 4 |
| Metastatic cancer, palliative resection | |||
| 494 | 0.0135 | 0.021 | 3 |
‘ND’ refers to ‘not detected’ and a dash means no plasma sample was available.