Parkinson's disease is not associated with the combined alpha-synuclein/apolipoprotein E susceptibility genotype.

Khan, N; Graham, E; Dixon, P; Morris, C; Mander, A; Clayton, D; Vaughan, J; Quinn, N et al. · Ann Neurol · 2001

case_control · Level III

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Abstract

A recent study showed significant association of sporadic Parkinson's disease with a polymorphism within the alpha-synuclein gene and closely linked DNA markers on chromosome 4q and the APOE epsilon4 allele. A combined alpha-synuclein/APOE-epsilon4 genotype increased the relative risk of developing Parkinson's disease 12-fold. We failed to confirm this association in a much larger sample of histopathologically proven cases of Parkinson's disease and controls.

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