Table 2.

The distribution of observed genotypes.

Gene	Variant 1	Variant 2	Variant 3	Consistent with the Hardy-Weinberg
80 G>A gene SLC19A1	GG−45 patients (33.8%)	AG−50 patients (37.6%)	AA−38 patients (28.6%)	(P = 0.054, χ2 = 5.84, df = 2)
677 C>T gene MTHFR	CC−66 patients (49.6%)	CT−54 patients (40.6%)	TT−13 patients (9.8%)	(P = 0.89, χ2 = 0.22, df = 2)
TS gene tandem repeats	2R/2R−29 patients (21.8%)	2R/3R−76 patients (57.1%)	3R/3R−28 patients (21.1%)	(P = 0.37, χ2 = 1.99, df = 2)