Table I.

Nuclear WTAP expression in tumor tissues and clinicopathological features of pancreatic ductal adenocarcinoma.

		Nuclear WTAP expression
Variable	Patient number	High	Low	P-valuea
Genderb				0.010
Male	85	37	48
Female	54	12	42
Age (years)				0.918
≥65	43	15	28
<65	95	34	61
Tumor location				0.851
Head	79	28	51
Non-head	54	20	34
Tumor size (cm)				0.290
≥4	98	37	61
<4	39	11	28
Histological grade				0.443
G1–2	106	35	71
G3–4	19	8	11
T stage				0.020
T1–2	81	22	59
T3	56	26	30
N stage				0.512
N0	78	26	52
N1	54	21	33
PNI				0.687
Present	69	26	43
Absent	31	13	18

^aχ² test. Total patient number does not equal 145 in all categories, as patient information was not available for all cases. WTAP, Wilms tumor 1-associated protein; G1, well-differentiated; G2, moderately-differentiated; G3, poorly-differentiated; G4, undifferentiated; T, tumor; N, lymph node; PNI, perineural invasion.