Table 1

 Haplotype and genotype frequency for the present case–control study

Controls (n = 513)Total PD (n = 580)YOPD (n = 263)Sporadic PD (n = 193)FPD (n = 124)
Values are n (%) unless specified.
FPD, familial Parkinson’s disease (index familial cases with one or more relative also affected by Parkinson’s disease); PD, Parkinson’s disease; YOPD, young onset Parkinson’s disease (onset before the age of 45 years)
Genotype
H1H1290 (56.5)377 (65)177 (67.3)125 (64.8)75 (60.5)
H1H2188 (36.6)171 (29.5)69 (26.2)57 (29.5)45 (36.3)
H2H235 (6.9)32 (5.5)17 (6.5)11 (5.7)4 (3.2)
Allele frequency
H1 (%)74.979.780.479.578.6
H2 (%)25.220.319.620.521.4