Table 1. Frequency of Expression of TRAPPC4, pERK1/2 and ERK1/2.

	Normal epithelium(%)	Adenoma(%)	Adenocarcinoma(%)
TRAPPC4
Nucleus*	0 (0.0)	1 (4.5)	19 (55.9)
Cytoplasm*	12 (85.7)	15 (68.2)	11 (32.4)
Total*	12 (85.7)	16 (72.7)	27 (79.4)
pERK1/2
Nucleus	0 (0.0)	1 (4.5)	9 (26.5)
Cytoplasm	0 (0.0)	4 (18.2)	0 (0.0)
Total	0 (0.0)	4 (18.2)	9 (26.5)
ERK1/2
Nucleus	0(0.0)	2(9.1)	16(47.1)
Cytoplasm	13(92.9)	12(54.5)	13(38.2)
Total	13(92.9)	12(54.5)	24(70.6)
Number of samples	14	22	34

*Nucleus, nuclear staining; Cytoplasm, cytoplasmic staining; Total, staining in nucleus or cytoplasm or both.