Table 1.

Comparison of genotype frequency distribution of SNPs and differentiation status of BTC

Gene	SNPs		Total	HD	MD	LD	X2	P-value
		n	225	132	71	22
Gab1	rs3828512	AA	101	60	32	9
		AG	105	62	33	10
		GG	19	10	6	3
							0.918	0.922
	rs3805236	AA	123	75	35	13
		AG	88	52	29	7
		GG	14	5	7	2
							3.979	0.409
	rs300919	CC	119	73	34	12
		TC	91	53	31	7
		TT	15	6	6	3
							3.915	0.418
	rs3805246	GG	71	45	22	4
		GA	119	66	40	13
		AA	35	21	9	5
							3.168	0.530
EGFR	rs1140475	CC	189	112	61	16
		TC	33	18	10	5
		TT	3	2	0	1
							4.144	0.387
Gene	SNPs		Total	HD	MD	LD	X2	P-value
	rs2017000	GG	89	56	30	3
		GA	110	63	32	15
		AA	26	13	9	4
							7.311	0.120
	rs884419	AA	65	39	21	5
		GA	117	70	33	14
		GG	43	23	17	3
							2.746	0.601
EGF	rs4444903	GG	89	55	27	7
		GA	99	57	32	10
		AA	37	20	12	5
							1.244	0.871

HD: highly differentiated group; MD: medium differentiated group; LD: low differentiated group.