Table 1. Allelic distribution and frequency of NRG1 genotyped variants.

Variant	Allele	HSCR (%)	Controls (%)
rs16879552 C>T	C	267 (99.6%)	262 (97.8%)
	T	1 (0.4%)	6 (2.2%)
		γ2 = 2.32, p = 0.123
rs7835688 C>G	C	131 (48.8%)	114 (42.5%)
	G	137 (51.2%)	154 (57.5%)
		Γ2 = 2.17, p = 0.140
rs10088313 G>T	G	265 (98.9%)	263 (98.1%)
	T	3 (1.1%)	5 (1.9%)
		γ2 = 0.13, p = 0.725

Allelic distribution and frequency of the NRG1 genotyped variants in HSCR patients and controls and their statistical comparison through γ ².