Table 1.

Patient characteristics

Patients	98
Median age (range)	66 (21–92)
Gender
Female, n (%)	44 (44.9%)
Male, n (%)	54 (55.1%)
Disease status at time of biopsy, n (%)
Stage III, newly diagnosed	8 (8.2%)
Stage IV, newly diagnosed	62 (63.3%)
Stage IV, recurrent disease	28 (28.6%)
Site of tissue biopsy, n (%)
Primary tumor	76 (78%)
Metastases	22 (22%)
Liver	18 (82%)
Lung	4 (18%)
Therapeutic history, n (%)
Treatment naive	70 (71.4%)
≥first line of therapy	28 (28.6%)
Baseline serum CEA, median (IQR) (n = 65)	18.4 (6.25–60.25)