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Table 3 Patient characteristics according to CTC number assessed by CellSearch

From: KRAS mutation analysis of single circulating tumor cells from patients with metastatic colorectal cancer

Patients’ characteristics

CTC = 0

CTC ≥ 1

Total (%)

n = 34

n = 27

n = 61

Age

 Median

69

63

67

 (range)

(34–80)

(36–82)

(34–82)

Site of primary tumor

 Right hemicolon

14

9

23 (38%)

 Left hemicolon

7

7

14 (23%)

 Rectum

13

10

23 (38%)

 Other

0

1

1 (1%)

Site of metastasis

 Liver only

14

10

24 (40%)

 Others

20

17

37 (60%)

Disease status

 Primary

11

12

23 (38%)

 Recurrence

23

15

38 (62%)

KRAS status in primary tissue

 Wild-type

21

14

35 (57%)

 Mutant

9

10

19 (31%)

 Unknown

4

3

7 (12%)