Parkinson hastalığına bağlı SNCA Rep1 varyantının taşıyıcıları daha fazla motor dışı düşüşe sahiptir: 4 yıllık bir takip çalışması.

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Alpha-synuclein gene promoter (SNCA Rep1) polymorphism has been linked to Parkinson's Disease (PD) susceptibility and motor symptom severity, but less is known about its longitudinal relationship with non-motor symptom severity. To address this gap, this is the first longitudinal study over 4 years investigating the relationship between Rep1 allele length and non-motor function amongst 208 early PD patients grouped into long (n = 111) vs. short (n = 97) Rep1 allele carriers. Long Rep1 carriers demonstrated faster decline in global cognition (p = 0.023) and increasing apathy (p = 0.027), with greater decline in attention and memory domains (p = 0.001), highlighting the utility of Rep1 polymorphism in stratifying patients at risk of non-motor symptom decline.

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