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Journal Article
Research Support, Non-U.S. Gov't
SMPD1 variants in Chinese Han patients with sporadic Parkinson's disease.
Parkinsonism & related Disorders 2017 January
INTRODUCTION: A founder mutation, p.L302P, in sphingomyelin phosphodiesterase 1, acid lysosomal (SMPD1), causing Niemann-Pick disease, a recessive lysosomal storage disorder, was reported to be associated with increased risk of Parkinson's disease (PD) in Ashkenazi Jewish population. Several other studies about the association between SMPD1 variants and PD were performed afterward in other populations. However, the results on the role of SMPD1 mutations for PD have been conflicting. This study aimed to investigate the role of mutations in SMPD1 in Chinese PD patients.
METHODS: We sequenced all the exons of this gene in 512 Chinese Han cases with sporadic Parkinson's disease and 495 matched healthy control subjects.
RESULTS: We identified Leu-Ala (Val) repeat variants and six known single nucleotide variants (p.A36V, p.D212D, p.P332R, p.G508R, p.P533L, p.T544T) in SMPD1 in both patients and normal controls. Case-control analysis showed the association between Leu-Ala (Val) repeat variants in SMPD1and Chinese Han patients with PD (χ2 = 8.771, p = 0.012), and the allele with less than seven LeuAla (Val) repeats may increase the risk of PD (p = 0.010).
CONCLUSION: We identified association between Leu-Ala (Val) repeat variants in SMPD1 and Chinese Han patients with sporadic Parkinson's disease. Our results provide further support for the role of lysosomal pathways in PD development.
METHODS: We sequenced all the exons of this gene in 512 Chinese Han cases with sporadic Parkinson's disease and 495 matched healthy control subjects.
RESULTS: We identified Leu-Ala (Val) repeat variants and six known single nucleotide variants (p.A36V, p.D212D, p.P332R, p.G508R, p.P533L, p.T544T) in SMPD1 in both patients and normal controls. Case-control analysis showed the association between Leu-Ala (Val) repeat variants in SMPD1and Chinese Han patients with PD (χ2 = 8.771, p = 0.012), and the allele with less than seven LeuAla (Val) repeats may increase the risk of PD (p = 0.010).
CONCLUSION: We identified association between Leu-Ala (Val) repeat variants in SMPD1 and Chinese Han patients with sporadic Parkinson's disease. Our results provide further support for the role of lysosomal pathways in PD development.
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