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| CTCCluster | Totalcases | Numberof CTCs | Median age at primary Dx (yrs) | Primary(%) | Metastatic(%) | ER or PR- pos(%) | HER2-pos(%) | TripleNegative (%) |
| I | 13 | 21 | 43 | 4/13 (31) | 9/13 (69) | 6/13 (46) | 2/13 (15) | 5/13 (38) |
| II | 30 | 84 | 45 | 12/30 (40) | 18/30 (60) | 12/30 (40) | 5/30 (17) | 13/30 (43) |
