Table 6. Distribution of CTLA-4 -1722T/C (rs733618 T/C) polymorphisms genotype and allele among multiple cancer patients and controls.

		case			control			case		control		HWE,P value
study	year	TT	TC	CC	TT	TC	CC	c	T	C	T
Qi et al.	2012	40	69	9	37	45	14	87	149	73	119	0.957723
Li et al.	2012	184	276	114	207	256	88	504	644	432	670	0.552314
Jiang et al.	2011	37	49	14	43	39	18	77	123	75	125	0.092957
Rahimifar et al.	2010	46	8	1	90	20	0	10	100	20	200	0.294266
Khaghanzadeh et al.	2010	106	19	1	98	16	1	21	231	18	212	0.702320
Sun et al.	2008	719	43	3	762	37	1	49	1481	39	1561	0.435355
Li et al.	2008	125	163	40	111	168	48	243	413	264	390	0.224758
Hadinia et al.(colorectal)	2007	97	12	0	165	24	0	12	206	24	354	0.351131
Hadinia et al.(gastric)	2007	42	4	0	165	24	0	4	88	24	354	0.351131
Erfani et al.	2006	225	54	3	204	41	0	60	504	41	449	0.152921
Bharti et al.	2013	92	25	6	131	46	3	37	209	52	308	0.648604
Song et al.	2006	62	113	8	45	54	17	129	237	88	144	0.902590
Our study	2013	210	300	101	228	314	115	502	720	544	770	0.700586

HWE: Hardy–Weinberg equilibrium.