Sinüklein Bozukluğu-İlgili Genetik Determinantlar, Klinik Öncesi Komünite Kohortunda Hafif Davranış Bozukluğu.

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BackgroundThe GBA variant confers increased risk of synuclein disorders but it is unclear what impact it has in pre-clinical groups. This study aimed to identify early psychiatric and cognitive manifestations amongst pre-clinical GBA carriers in a community cohort.MethodThis study used data from the PROTECT-UK cohort to compare 388 GBA carriers (N370S, E326K and T369M) without Parkinson's disease to age-matched controls. Neuropsychiatric symptoms (NPS) were measured with the Mild Behaviour Impairment Checklist, and cognition was measured using computerised neuropsychology.ResultsResults: GBA carriers over 70 had significantly increased NPS compared with controls (z = 2.13, p = 0.03). There was no difference between carriers and non-carriers in younger individuals but a sub-group comparison in the overall cohort showed that NPS were more severe in quartile four (Q4) of carriers compared to Q4 of controls (z = 2.39, p = 0.017), indicating an increase in NPS in this sub-group across a broader age range. No differences in cognition were seen.DiscussionThese findings suggest that NPS may be an early clinical manifestation of emerging synucleinopathy amongst individuals prior to diagnosis.

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