Table 2.

Brain-derived neurotropic factor rs6265 genotype distributions among T2DM cases and controls of the included studies.

		Cases			Controls
First author	Year	GG	GA	AA	GG	GA	AA	MAF	P (HWE)∗
Chen Y[12]	2019	172	213	33	176	202	44	34.4	.209
Zhen YF[13]	2018	76	165	70	88	183	75	48.1	.27
Jin Y[14]	2015	16	19	37	127	45	36	28.1	<.001
Xu HY[15]	2014	53	68	39	30	35	15	40.6	.405
Zhou JX[16]	2014	26	33	11	103	137	56	42.1	.386
Cao Y[17]	2011	106	179	73	24	98	64	60.8	.153
Zhou DH[18]	2010	22	44	25	59	82	50	47.6	.054
Krabbe KS[19]	2007	61	30	5	88	42	7	20.4	.502

HWE = Hardy-Weinberg equilibrium, MAF = minor allele frequency.

^∗P value of chi-square test for HWE among controls.