Table 3.

Distribution of 188Arg/Arg, 188Arg/His, and 188His/His genotypes and frequencies of the Arg and His alleles in patients with triple-negative breast cancer and controls

XRCC2 Arg188His	TNBC patients (n = 70)		Controls (n = 70)		OR (95 % CI)a	p b
	Number	(%)	Number	(%)
188Arg/Arg	12	17	18	26	1.00 Ref
188Arg/His	8	12	40	57	0.30 (0.10–0.86)	0.042
188His/His	50	71	12	17	6.25 (2.38–16.39)	0.0003
188Arg	32	23	76	54	1.00 Ref
188His	108	77	64	46	4.00 (2.39–6.71)	<.0001

Data in boldface are statistically significant (p < 0.05)

^aCrude odds ratio (OR), 95 % CI = confidence interval at 95 %

^bChi square