Genetic impact on cognition and brain function in newly diagnosed Parkinson’s disease: ICICLE-PD study

See Dujardin (doi:10.1093/brain/awu218) for a scientific commentary on this article. Nombela et al. present data from the ICICLE-PD study of cognition in newly diagnosed Parkinson’s disease. Consistent with the ‘Dual Syndrome’ hypothesis, impairments in executive function reflect a frontal dopaminergic syndrome modulated by COMT genotype, while visuospatial and memory deficits reflect disruption of temporo-parietal systems modulated by MAPT and APOE.

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