Genotype

TT

TG

GG

T allele frequency

G allele frequency

Patients (n=136)

28(20.6)

78(57.4)

30(22.0)

0.49

0.51

Controls (n=136)

58(42.6)

62(45.6)

16(11.8)

0.65

0.35

Chi-Square=16.55

df=2

P<0.0003