Journal
NEUROBIOLOGY OF AGING
Volume 127, Issue -, Pages 94-98Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.neurobiolaging.2023.03.002
Keywords
REM-sleep behavior disorder; Parkinson's disease; Dementia with Lewy bodies; NPC1; Niemann-Pick disease type C; Association study
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NPC1 gene encodes a lysosomal protein involved in cholesterol transport associated with Niemann-Pick disease type C (NPC). The role of NPC1 in alpha synucleinopathies is unclear. This study aimed to evaluate the association of NPC1 variants with synucleinopathies PD, DLB, and RBD. No variants were associated with any of the synucleinopathies, indicating that NPC1 variants do not play an important role.
NPC1 encodes a lysosomal protein involved in cholesterol transport. Biallelic mutations in this gene may lead to Niemann-Pick disease type C (NPC), a lysosomal storage disorder. The role of NPC1 in alpha synuclei-nopathies is still unclear, as different genetic, clinical, and pathological studies have reported contradictory results. This study aimed to evaluate the association of NPC1 variants with the synucleinopathies Parkinson's disease (PD), dementia with Lewy bodies (DLB), and rapid eye movement-sleep behavior disorder (RBD). We analyzed common and rare variants from 3 cohorts of European descent: 1084 RBD cases and 2945 controls, 2852 PD cases and 1686 controls, and 2610 DLB cases and 1920 controls. Logistic regression models were used to assess common variants while optimal sequence Kernel association tests were used to assess rare variants, both adjusted for sex, age, and principal components. No variants were associated with any of the synucleinopathies, supporting that common and rare NPC1 variants do not play an important role in alpha synucleinopathies.(c) 2023 Elsevier Inc. All rights reserved.
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