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- W2997770921 abstract "Abstract Objective To study the role of GBA variants in the risk for isolated rapid-eye-movement (REM)-sleep behavior disorder (iRBD) and conversion to overt neurodegeneration. Methods A total of 4,147 individuals were included: 1,061 iRBD patients and 3,086 controls. GBA was fully sequenced using molecular inversion probes and Sanger sequencing. We analyzed the effects of GBA variants on the risk for iRBD, age at onset (AAO) and conversion rates. Results GBA variants were found in 9.5% of iRBD patients compared to 4.1% in controls (odds ratio [OR]=2.45, 95% CI=1.87–3.22, p =1×10 −10 ). The estimated OR for mild p.N370S variant carriers was 3.69, 95% CI=1.90–7.14, p =3.5×10 −5 , while for severe variant carriers it was 17.55, 95% CI=2.11–145.9, p =0.0015. Carriers of severe GBA variants had an average AAO of 52.8 years, 7-8 years earlier than those with mild variants or non-carriers ( p =0.029). Of the GBA variant carriers with available data, 52.5% had converted, compared to 35.6% in non-carriers ( p =0.011), with a trend for faster conversion among severe GBA variant carriers. However, the results on AAO and conversion were based on small numbers and should be taken with caution. Conclusions GBA variants robustly and differentially increase the risk of iRBD. The rate of conversion to neurodegeneration is also increased and may be faster among severe GBA variant carriers, although confirmation will be required in larger samples. Screening for RBD in healthy carriers of GBA variants should be studied as a potential way to identify GBA variant carriers who will develop a synucleinopathy in the future." @default.
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- W2997770921 date "2019-11-05" @default.
- W2997770921 modified "2023-09-29" @default.
- W2997770921 title "GBA variants in REM sleep behavior disorder: a multicenter study" @default.
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