Chinese PD-SNCA Registry

Overview

The purpose of the Chinese PD-SNCA Registry(CPD-SNCAR) is to develop a database of patients of Parkinson's disease with a-synuclein (SNCA) gene variants in mainland China.

Full Title of Study: “The Chinese Parkinson’s Disease With SNCA Variants Registry”

Study Type

  • Study Type: Observational
  • Study Design
    • Time Perspective: Prospective
  • Study Primary Completion Date: February 1, 2027

Detailed Description

Parkinson's disease (PD) is the second most common disorder among neurodegenerative diseases. SNCA is the first gene implicated in monogenic parkinsonism. However, some polymorphisms of SNCA gene such as rs894278 and rs11931074 can affect the risk of sporadic PD. The investigators aim to establish a database of PD with SNCA variants and characterize the clinical manifestation of these patients in mainland China. Method: 1. Peripheral blood from patients has been tested to have SNCA gene variants. 2. Clinical manifestation will be measured by scales and neurological tests. Standard scales include: Unified Parkinson's Disease Rating Scale(UPDRS), Hoehn-Yahr stages, Non-Motor Symptoms Scale (NMSS), mini-mental state examination (MMSE), Parkinson disease sleep scales (PDSS), Rapid Eye Movement Sleep Behaviour Disorder Questionnaire(RBDQ-HK), Epworth Sleepiness Scale (ESS), Rome III functional constipation scale, the Scale for Outcomes in PD for Autonomic Symptoms (SCOPA-AUT), Parkinson Fatigue Scale (PFS), Cambridge-Hopkins Restless Legs Syndrome questionnaire (CHRLSq), Hyposmia rating scale(HRS), Hamilton depression scale, the 39-item Parkinson's Disease Questionnaire(PDQ-39), Freezing of gait scale(FOG), dyskinesia related scales, Wearing-off scale(WO). 3. The investigators will also exam the blood biomarkers of PD such as uric acid and peripheral inflammatory markers.

Clinical Trial Outcome Measures

Primary Measures

  • Database of Parkinson’s disease with SNCA variants
    • Time Frame: 10 years
    • Establish the database of Parkinson’s disease with SNCA variants in mainland China.
  • Clinical feature
    • Time Frame: 10 years
    • Characterize the clinical feature in patients of Parkinson’s disease with SNCA variants

Participating in This Clinical Trial

Inclusion Criteria

  • Patients diagnosed with PD by the United Kingdom Parkinson's Disease Society Brain Bank clinical diagnostic criteria or other standard criteria; PD patients detected with positive SNCA variants Exclusion Criteria:

-

Gender Eligibility: All

Minimum Age: N/A

Maximum Age: N/A

Are Healthy Volunteers Accepted: No

Investigator Details

  • Lead Sponsor
    • Xiangya Hospital of Central South University
  • Provider of Information About this Clinical Study
    • Sponsor
  • Overall Contact(s)
    • Jifeng Guo, Ph.D., +8613974936815, guojifeng2003@163.com

Citations Reporting on Results

Hu Y, Tang B, Guo J, Wu X, Sun Q, Shi C, Hu L, Wang C, Wang L, Tan L, Shen L, Yan X, Zhang H. Variant in the 3' region of SNCA associated with Parkinson's disease and serum alpha-synuclein levels. J Neurol. 2012 Mar;259(3):497-504. doi: 10.1007/s00415-011-6209-4. Epub 2011 Aug 19.

Ai SX, Xu Q, Hu YC, Song CY, Guo JF, Shen L, Wang CR, Yu RL, Yan XX, Tang BS. Hypomethylation of SNCA in blood of patients with sporadic Parkinson's disease. J Neurol Sci. 2014 Feb 15;337(1-2):123-8. doi: 10.1016/j.jns.2013.11.033. Epub 2013 Dec 1.

Guo JF, Li K, Yu RL, Sun QY, Wang L, Yao LY, Hu YC, Lv ZY, Luo LZ, Shen L, Jiang H, Yan XX, Pan Q, Xia K, Tang BS. Polygenic determinants of Parkinson's disease in a Chinese population. Neurobiol Aging. 2015 Apr;36(4):1765.e1-1765.e6. doi: 10.1016/j.neurobiolaging.2014.12.030. Epub 2015 Jan 6.

Wei Y, Yang N, Xu Q, Sun Q, Guo J, Li K, Liu Z, Yan X, Zhu X, Tang B. The rs3756063 polymorphism is associated with SNCA methylation in the Chinese Han population. J Neurol Sci. 2016 Aug 15;367:11-4. doi: 10.1016/j.jns.2016.05.037. Epub 2016 May 19.

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