Table 2. Characteristics of included studies.

Author, year	SOC	Ethnicity	Case					Control					NOS	HWE
			AA	GA	GG	G	A	AA	GA	GG	G	A
Sharma, 2017 [11]	HB	Asians	165	131	154	439	461	158	198	102	402	514	5	NO
Su, 2015 [12]	HB	Asians	142	274	129	532	558	116	228	124	476	460	6	YES
Xiao, 2015 [13]	HB	Asians	31	53	30	113	115	44	67	15	97	155	7	YES
Jiang, 2013 [14]	PB	Asians	22	68	12	92	112	114	83	23	129	311	6	YES
Jiang, 2013 [14]	PB	Asians	25	73	13	99	123	114	83	23	129	311	6	YES
Ana, 2010 [15]	HB	Caucasians	251	682	463	1608	1184	281	625	347	1319	1187	6	YES
Ana, 2010 [15]	HB	Caucasians	219	584	390	1364	1022	281	625	347	1319	1187	6	YES
Ana, 2010 [15]	PB	Caucasians	94	242	156	554	430	421	896	487	1870	1738	6	YES
Ana, 2010 [15]	PB	Caucasians	18	47	30	107	83	421	896	487	1870	1738	6	YES
Zhang, 2018 [16]	PB	Asians	10	200	290	780	220	20	610	450	1510	650	7	YES
Zhang, 2018 [17]	HB	Asians	82	173	91	355	337	81	202	111	424	364	7	YES