Table 2.

Additional genes causing parkinsonism.

Gene	Disease	Refs
MAPT	Frontotemporal dementia with parkinsonism linked to chromosome 17	[30–38]
ATXN2	Spinocerebellar ataxia type 2 and parkinsonism
ATXN3	Spinocerebellar ataxia type 3 and parkinsonism
SPG11	Hereditary spastic paraplegia and parkinsonism
POLG1	Mitochondrial parkinsonism