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Response rates according to cutoff values of baseline CTC counts (185 evaluable patients)
| CTC cutoff value | Responses in patients below cutoff, n (%) | Responses in patients above cutoff, n (%) | p value |
|---|---|---|---|
| One CTC | 38/98 (38.7) | 38/87 (43.6) | .49 |
| Two CTCs | 52/136 (38.2) | 24/49 (48.9) | .19 |
| Three CTCs | 66/156 (42.3) | 10/29 (34.4) | .34 |
| Four CTCs | 72/168 (42.9) | 4/17 (23.5) | .12 |
| Five CTCs | 74/174 (42.5) | 2/11 (18.2) | .16 |
Abbreviation: CTC, circulating tumor cell.
