Table 3:

Differences in reported history of paternal and maternal parkinsonism between PD groups

	Parkinsonism in parent N (%)	Parkinsonism in mother N (%)	Parkinsonism in father N (%)	p
Idiopathic PD	61/420 (14.5%)	19/61 (31.2%)	43/61 (70.5%)	0.002
LRRK2 PD	30/99 (30.3%)	16/30 (53.3%)	16/30 (53.3%)	1
GBA PD	14/107 (13.1%)	5/14 (35.7%)	9/14 (64.3%)	0.268
LRRK2 GBA PD	3/10 (30.3%)	2/3 (66.7%)	1/3 (33.3%)	0.531

While idiopathic PD were more likely to report a history of parkinsonism in a father (43/61, 70.5%) compared to a mother (19/61, 31.2%) (p=0.002), there was no difference in maternal or paternal risk of parkinsonism among LRRK2 PD or GBA PD