Table 2.

Frequencies of studied DNA repair gene SNPs in patient and control groups.

SNPs	Patients	%	Controls	%	χ2 Test	p Value	OR (95% CI)	p Value
ERCC2 rs13181
TT	24	24	39	36
TG	58	58	52	49
GG	18	18	16	15	3.4	0.179
G allele	94	47	84	39
T allele	106	53	130	61	3.4	0.064	0.72 (0.49–1.08)	0.11
XPC PAT −/+
−/−	19	19	36	34
−/+	55	55	35	32
+/+	26	26	36	34	11.3	0.04	2.16 (1.14–4)	0.01
-	93	46.5	107	50
+	107	53.5	107	50	6.2	0.13	1.15 (0.78–1.69)	0.47
XRCC3 rs861539
CC	79	79	36	34
CT	14	14	59	55
TT	7	7	12	11	45.9	<0.01	0.14 (0.07–0.25)	<0.001
C allele	172	86	131	65.5
T allele	28	14	83	34.5	43.9	<0.01	0.26 (0.16–0.41)	<0.001