Table 2

Summary of CTC counts in 7.5 mL of blood from patients with various types of carcinomas

No. of patientsNo. of specimensMean ± SDMedian with ≥ 2No. (%) ≥ 2No. (%) ≥ 5No. (%) ≥ 10No. (%) ≥ 50
Subject
 Healthy1451450.1 ± 0.2N/A0 (0)0 (0)0 (0)0 (0)
 Nonmalignant1991990.1 ± 0.331 (1)0 (0)0 (0)0 (0)
Metastatic cancer type
 Prostate cancer12318875 ± 33313107 (57)77 (41)61 (32)27 (14)
 Unknown cancer112716 ± 351314 (52)13 (48)8 (30)2 (7)
 Ovarian cancer29536 ± 16920 (38)12 (23)9 (17)1 (2)
 Breast cancer422131684 ± 88510489 (37)340 (26)256 (19)129 (10)
 Gastric cancer91324 ± 8334 (31)1 (8)1 (8)1 (8)
 Colorectal cancer1963334 ± 11599 (30)56 (17)30 (9)5 (2)
 Bladder cancer7742 ± 1071462 (29)2 (29)1 (14)1 (14)
 Renal cancer11121 ± 123 (25)0 (0)0 (0)0 (0)
 Lung cancer9916830 ± 178934 (20)24 (14)16 (10)10 (6)
 Pancreatic cancer16212 ± 63.54 (19)1 (5)1 (5)0 (0)
 Assorted other cancer41451 ± 4115 (11)4 (9)3 (7)0 (0)
 Combined cancers964218361 ± 6969781 (36)530 (24)386 (18)176 (8)
  • NOTE. The group labeled unknown are patients with metastatic disease with unknown primary tumor; the assorted others are carcinomas with <5 specimens.

  • Abbreviation: N/A, not applicable.