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Four‐groups analysis according to the presence or absence of CDKN2A and receptor tyrosine kinase genetic alterations
| Variable | Category | No. patients | No. deaths | Hazard ratio for death (95.0% CI) | P‐value |
|---|---|---|---|---|---|
| CDKN2A/RTK | No deletion/No amplification | 169 | 19 | Reference | |
| Deletion/No amplification | 14 | 3 | 2.398 (0.708–8.120) | 0.160 | |
| No deletion/Amplification | 26 | 7 | 2.626 (1.103–6.248) | 0.029 | |
| Deletion/Amplification | 11 | 4 | 3.517 (1.196–10.34) | 0.022 |
