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Correlation between total number of PCR-positive assays and rates of progression disease or median survivals
| No. of positive assays | No. of patients | No. of PDs (%) | median DFS (months) | median OS (months) |
| 0 | 18 | 3 (17) | 81 | 83 |
| 1 | 46 | 8 (17) | 81 | 83 |
| 2 | 45 | 12 (27) | 82 | 83 |
| 3 | 27 | 17 (63) | 78 | 79 |
| 4–5 | 13 | 9 (69) | 66 | 70 |
PD, progression disease; DFS, disease free-survival; OS, overall survival
