Table 2. Genotype distribution of the studied GDNF polymorphisms.

dbSNP No	Genotype	N	%	HWE*	Call rate
rs1981844	GG	313	55.1	p = 0.537	80.2%
	CG	224	39.4
	CC	31	5.5
rs3812047	GG	542	76.6	p = 0.962	100,0%
	GA	154	21.7
	AA	12	1.7
rs3096140	TT	316	48.0	p = 0.928	92.9%
	TC	283	43.0
	CC	59	9.0
rs2973041	AA	488	70.6	p = 0.727	97.6%
	AG	182	26.4
	GG	21	3.0
rs2910702	AA	380	54.8	p = 0.911	98.0%
	GA	270	38.9
	GG	44	6.3
rs1549250	TT	235	33.5	p = 0.970	99.0%
	TG	339	48.4
	GG	127	18.1
rs2973050	CC	237	40.6	p = 0.340	82.3%
	TC	282	48.4
	TT	64	11.0
rs11111	AA	535	75.9	p = 0.321	99,6%
	AG	153	21.7
	GG	17	2.4

Note. * Hardy-Weinberg equilibrium.