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Kaiyrzhanov R, Aitkulova A, Shashkin C, Zharkinbekova N, Rizig M, Zholdybayeva E, Jarmukhanov Z, Akhmetzhanov V, Kaishibayeva G, Khaibullin T, Karimova A, Akshulakov S, Bralov A, Kissamedenov N, Seidinova Z, Taskinbayeva A, Muratbaikyzy A, Houlden H. LRRK2 Mutations and Asian Disease-Associated Variants in the First Parkinson's Disease Cohort from Kazakhstan. PARKINSON'S DISEASE 2020; 2020:2763838. [PMID: 32148752 PMCID: PMC7049866 DOI: 10.1155/2020/2763838] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Accepted: 12/31/2019] [Indexed: 11/17/2022]
Abstract
BACKGROUND LRRK2 mutations have emerged as the most prevalent and potentially treatable determinants of Parkinson's disease (PD). Peculiar geographic distribution of these mutations has triggered an interest in genotyping PD cohorts of different ethnic backgrounds for LRRK. OBJECTIVE Here, we report on the results of LRRK2 screening in the first Central Asian PD cohort. METHODS 246 PD patients were consecutively recruited by movement disorder specialists from four medical centers in Kazakhstan, and clinicodemographic data and genomic DNA from blood were systematically obtained and shipped to the Institute of Neurology University College London together with DNAs from 200 healthy controls. The cohort was genotyped for five LRRK2 mutations (p.Gly2019Ser, p.Arg1441His, p.Tyr1699Cys, p.Ile2020Thr, and p.Asn1437His) and three East Asian disease-associated variants (p.Gly2385Arg, p.Ala419Val, and p.Arg1628Pro) via Kompetitive allele-specific polymerase chain reaction assay analysis. RESULTS None of the study subjects carried LRRK2 mutations, whereas the following Asian variants were found with insignificant odds ratios (OR): p.Gly2385Arg (1.2%, minor allele frequency (MAF) 0.007, OR 1.25, p=0.8), p.Ala419Val (3.7%, MAF 0.02, OR 1.5, p=0.8), p.Ala419Val (3.7%, MAF 0.02, OR 1.5. CONCLUSIONS We showed that East Asian LRRK variants could be found in Central Asian populations but their pathogenicity remains to be elucidated in larger PD cohorts.
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Affiliation(s)
- Rauan Kaiyrzhanov
- University College London, Institute of Neurology, Department of Neuromuscular Disorders, Queen Square, WC1N 3BG, London, UK
| | - Akbota Aitkulova
- National Center for Biotechnology, Department of Molecular Genetics, 13/5 Korgalzhyn Avenue, 01000 Nur-Sultan, Kazakhstan
| | - Chingiz Shashkin
- South Kazakhstan Medical Academy, Department of Neurology, 1/1Al-Farabi Avenue, 160019 Shymkent, Kazakhstan
| | - Nazira Zharkinbekova
- South Kazakhstan Medical Academy, Department of Neurology, 1/1Al-Farabi Avenue, 160019 Shymkent, Kazakhstan
| | - Mie Rizig
- University College London, Institute of Neurology, Department of Neuromuscular Disorders, Queen Square, WC1N 3BG, London, UK
| | - Elena Zholdybayeva
- National Center for Biotechnology, Department of Molecular Genetics, 13/5 Korgalzhyn Avenue, 01000 Nur-Sultan, Kazakhstan
| | - Zharkyn Jarmukhanov
- National Center for Biotechnology, Department of Molecular Genetics, 13/5 Korgalzhyn Avenue, 01000 Nur-Sultan, Kazakhstan
| | - Vadim Akhmetzhanov
- South Kazakhstan Medical Academy, Department of Neurology, 1/1Al-Farabi Avenue, 160019 Shymkent, Kazakhstan
| | - Gulnaz Kaishibayeva
- Institute of Neurology Named After S. K. Kaishibayev, 9a Mamur 4 Micro-district, 050000 Almaty, Kazakhstan
| | - Talgat Khaibullin
- Semey Medical University, Department of Neurology, 103 Abai Street, 071400 Semey, Kazakhstan
| | - Altynay Karimova
- Institute of Neurology Named After S. K. Kaishibayev, 9a Mamur 4 Micro-district, 050000 Almaty, Kazakhstan
| | - Serik Akshulakov
- National Center for Neurosurgery, 34/1 Turan Avenue, 01000 Nur-Sultan, Kazakhstan
| | - Askhat Bralov
- National Center for Neurosurgery, 34/1 Turan Avenue, 01000 Nur-Sultan, Kazakhstan
| | - Nurlan Kissamedenov
- National Center for Neurosurgery, 34/1 Turan Avenue, 01000 Nur-Sultan, Kazakhstan
| | - Zhanar Seidinova
- South Kazakhstan Medical Academy, Department of Neurology, 1/1Al-Farabi Avenue, 160019 Shymkent, Kazakhstan
| | - Anjela Taskinbayeva
- South Kazakhstan Medical Academy, Department of Neurology, 1/1Al-Farabi Avenue, 160019 Shymkent, Kazakhstan
| | - Aliya Muratbaikyzy
- South Kazakhstan Medical Academy, Department of Neurology, 1/1Al-Farabi Avenue, 160019 Shymkent, Kazakhstan
| | - Henry Houlden
- University College London, Institute of Neurology, Department of Neuromuscular Disorders, Queen Square, WC1N 3BG, London, UK
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Chen S, Liu H, Wu QQ, Xu SJ, Li WG, Chen T, Li C, Ma XY, Xu S, Liu YM. Effect of LRRK2 G2385R Variant on Subthalamic Deep Brain Stimulation Efficacy in Parkinson's Disease in a Han Chinese Population. Front Neurol 2019; 10:1231. [PMID: 31824408 PMCID: PMC6884002 DOI: 10.3389/fneur.2019.01231] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 11/05/2019] [Indexed: 02/04/2023] Open
Abstract
Deep brain stimulation (DBS) of the subthalamic nucleus (STN) is an effective treatment for advanced Parkinson's disease (PD). The G2385R variant of LRRK2 is a risk factor for PD in Han Chinese individuals. We retrospectively compared the clinical outcomes of STN-DBS surgery between PD Han Chinese G2385R variant carriers and non-carriers. Fifty-seven PD patients with bilateral STN-DBS were enrolled, including 8 G2385R+ variant carriers (G2385R+ group) and 49 non-carriers (G2385R- group). Clinical data included Unified Parkinson's Disease Rating Scale (UPDRS) parts I to IV, levodopa equivalent daily dose (LEDD), Mini-Mental State Examination Scale (MMSE) score, and Hamilton Depression Rating Scale (HAMD) score measured prior to DBS and 12 months post-DBS. DBS settings were also recorded. All PD patients benefited from STN-DBS surgery. There were no statistical differences between the two groups in terms of motor function, daily living activities, and LEDD reductions at 12 months post-DBS. The rigidity of the post-surgical G2385R+ group was significantly improved compared with that of the G2385R- group (P = 0.045). Post-surgical voltage in the G2385R+ group was significantly higher than that in the G2385R- group (P = 0.033). STN-DBS outcomes were not influenced by the LRRK2 G2385R variant in Han Chinese patients.
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Affiliation(s)
- Si Chen
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, China
| | - Hong Liu
- Department of Neurology, People's Hospital of Liaocheng, Liaocheng, China
| | - Qian-Qian Wu
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, China
| | - Shu-Jun Xu
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, China
| | - Wei-Guo Li
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, China
| | - Teng Chen
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, China
| | - Chao Li
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, China
| | - Xiang-Yu Ma
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, China
| | - Shuo Xu
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, China
| | - Yi-Ming Liu
- Department of Neurology, Qilu Hospital of Shandong University, Jinan, China
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