Table 3.

Patient Demographics, Tumor Clinicopathologic Features and Genetic Characteristics of Patients with Circulating Tumor Cells based upon staining with cytokeratin and CD133.

Variable	PanCK positive, CD133 positive, CD44 negative CTCs (n=40)	Absence of PanCK positive, CD133 positive, CD44 negative CTCs (n=20)	P-Value
Average Age (years)	65 (27–85)	64 (40–88)	0.76
Gender			0.26
Male	27 (68%)	10 (50%)
Female	13 (32%)	10 (50%)
Average CA19-9	483 (0.6–3758)	946 (1–9032)	0.55
CA 19-9 Level (n=46)			0.35
High (> 36)	21 (66%)	7 (50%)
Low (< 36)	11 (34%)	7 (50%)
Surgical Resection			0.64
Whipple	29 (73%)	15 (75%)
Distal pancreatectomy	9 (22%)	3 (15%)
Total pancreatectomy	2 (5%)	2 (10%)
Average Tumor Size (cm)	3.2 (1.7)	3.3 (1.7)	0.81
Tumor Grade			0.90
Well	2 (5%)	1 (5%)
Moderate	21 (54%)	10 (50%)
Poor	16 (41%)	9 (45%)
Not specified
Positive lymph nodes	28 (70%)	14 (70%)	>0.99
Positive margin	8 (20%)	4 (20%)	>0.99
Stage			0.69
Stage I	8 (20%)	4 (20%)
Stage II	31 (78%)	15 (75%)
Stage III	0 (0%)	1 (5%)
Stage IV	1 (2%)	0 (0%)
Perineural invasion	31 (78%)	16 (80%)	0.99
Perivascular invasion	27 (68%)	13 (65%)	0.99
Neoadjuvant Chemotherapy	15 (38%)	9 (45%)	0.59
Adjuvant Chemotherapy	35 (88%)	17 (100%)	0.31