Journals / Nöropsikiyatri Arşivi / 2019 / Cilt: 56 - Sayı: 2

Phenotypic and Genotypic Analysis of Hereditary Ataxia Patients in Sakarya City, Turkey

Sakarya İli Herediter Ataksi Hastalarının Fenotipik ve Genotipik İncelenmesi

Pages
106–109
Publication Date
2022-10-19
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Our study contributes to the literature by reflectingphenotypic and genotypic characteristics of hereditary SCA patients inour region and reporting rare hereditary ataxia genotypes.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Introduction: Hereditary ataxias are a group of heterogeneous diseases inregard to their clinical and genetic characteristics.
📊
Key Findings & Data:In our study, thirty-seven patients of suspected hereditaryataxia were examined with their clinical and genetic aspects, and theresults compared with literature.Method: Our study included 37 patients in 22 families who presentedto our center between 2010–2016, and whose familial history andphenotypic features indicated hereditary ataxia.
💡
Conclusion & Impact:Our study contributes to the literature by reflectingphenotypic and genotypic characteristics of hereditary SCA patients inour region and reporting rare hereditary ataxia genotypes.
🔬Design:Lab & Field Experiment
📍Scope:2010–2016 Verileri
⚙️Variables:Domain Parameters

Abstract

Introduction: Hereditary ataxias are a group of heterogeneous diseases inregard to their clinical and genetic characteristics. Ataxia that progressesslowly may be accompanied by pyramidal and extrapyramidal findings,articulation disorders, ophthalmic movement disorders, neuropathiccomplaints, cognitive and behavioral abnormalies, and epilepsy.Definitive diagnosis in hereditary ataxias is based on molecular assays.History, clinical examination, laboratory and neuroimaging assistdiagnosis. In our study, thirty-seven patients of suspected hereditaryataxia were examined with their clinical and genetic aspects, and theresults compared with literature.Method: Our study included 37 patients in 22 families who presentedto our center between 2010–2016, and whose familial history andphenotypic features indicated hereditary ataxia. The patients werestudied for clinical findings, family tree, neuroimaging, and laboratoryfindings. Advanced genetic investigations were performed on peripheralvenous blood samples for hereditary ataxia.Results: Of the 37 patients included in our study, 21 were females and16 were males. Genetic analyses resulted in spinocerebellar ataxia (SCA)in four families (10 patients), Friedrich ataxia (FA) in three families (eightpatients), and recessive ataxia due to point mutation in one family (twopatients). SCA subtyping revealed SCA 1, 2, 6 and 8 in our patients. Theremaining 16 patients included in our study could not be solved so farand are under investigation.Conclusion: Hereditary ataxias are rare neurodegenerative disorders.Large genetic pool, ethnic and local differences complicate diagnosingeven further. Our study contributes to the literature by reflectingphenotypic and genotypic characteristics of hereditary SCA patients inour region and reporting rare hereditary ataxia genotypes.

Özet

Amaç: Herediter ataksiler, klinik ve genetik özellikleriyle heterojen bir grup hastalıktır. Yavaş progresyon gösteren ataksi ile karakterize olan kliniğe piramidal ve ekstrapiramidal bulgular, artikülasyon bozuklukları, oftalmik hareket bozuklukları, nöropatik yakınmalar, kognitif ve davranışsal bozukluklar ve epilepsi eşlik edebilir. Herediter ataksilerde kesin tanı moleküler çalışmalara dayanır. Anamnez, klinik muayene, laboratuvar ve nörogörüntüleme çalışmaları tanıya yardımcıdır. Çalışmamızda, Sakarya ili herediter ataksi şüphesi taşıyan 37 olgunun fenotipik ve genotipik özellikleri incelendi ve bu hastalarda saptanan mutasyonların klinik bulgularla ilişkisi belirlenip sonuçlar literatürdeki bilgiler ile karşılaştırıldı. Yöntem: Çalışmamıza 2010–2016 yılları arasında merkezimize başvuran, aile öyküsü ve fenotipik özellikleriyle herediter ataksi düşündüren 22 aileden 37 olgu dâhil edildi. Olgular klinik, aile ağacı, nörogörüntüleme ve laboratuvar özellikleri açısından incelendi. İleri genetik araştırma için periferik venöz kan örnekleri alındı. Bulgular: 37 olgunun 21’i kadın, 16’sı erkekti. Genetik incelemeler sonucu; dört ailede (10 hasta) spinoserebellar ataksi (SCA), üç ailede (sekiz hasta) Friedrich ataksisi (FRDA), bir ailede (iki hasta) ise MRE-11 geninin nokta mutasyonuna bağlı otozomal resesif ataksi saptandı. SCA olgularının alt tiplemesi SCA 1, 2, 6 ve 8 şeklindeydi. Kalan 16 hastanın genetik incelemesi devam etmektedir. Sonuç: Herediter ataksiler nadir görülen nörodejeneratif hastalıklardandır. Genetik havuzunun geniş olması yanı sıra etnik ve bölgesel farklılıklar göstermesi, tanı konulmasını zorlaştırmaktadır. Çalışmamızın, ilimiz herediter SCA hastalarının fenotipik ve genotipik özelliklerini ve nadir görülen herediter ataksi genotipleri yansıtması ile literatüre katkı sağladığını düşünmekteyiz.

🔖

Cite This Article

BAŞAK, A. N., SAYAN, S., KOTAN, D., GÜNDOĞDU-EKEN, A., ŞAHBAZ, I., KOÇOĞLU, C. (2022). Phenotypic and Genotypic Analysis of Hereditary Ataxia Patients in Sakarya City, Turkey. Nöropsikiyatri Arşivi, Cilt: 56 - Sayı: 2, 106–109. https://ajindex.com/articles/584651

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (13)

  1. Hersheson J, Haworth A, Houlden H. The inherited ataxias: genetic heterogeneity, mutation databases, and future directions in research and clinical diagnostics. Hum Mutat 2012
  2. 1324–1332. [CrossRef] 2. Ruano L, Melo C, Silva MC, Coutinho P. The global epidemiology of hereditary ataxia and spastic paraplegia: a systematic review of prevalence studies. Neuroepidemiology 2014
  3. 174–183. [CrossRef] 3. Saner N, Basak AN. Heterojen bir hastalık grubu: spinoserebellar ataksiler, genetik yapıları ve moleküler tanıları. Türk Nöroloji Dergisi 2006
  4. 185–194. 4. Klockgether T. Update on degenerative ataxias. Curr Opin Neurol 2011
  5. 339–345. [CrossRef] 5. Verbeek DS, van de Warrenburg BP. Genetics of the dominant ataxias. Semin Neurol 2011
  6. 461–469. [CrossRef] 6. Kim JS, Cho JW. Hereditary Cerebellar Ataxias: A Korean Perspective. J Mov Disord 2015
  7. 67–75. [CrossRef] 7. Rüb U, Schöls L, Paulson H, Auburger G, Kermer P, Jen JC, Seidel K, Korf HW, Deller T. Clinical features, neurogenetics and neuropathology of the polyglutamine spinocerebellar ataxias type 1, 2, 3, 6 and 7. Prog Neurobiol 2013
  8. 38–66. [CrossRef] 8. Pagon RA, Adam MP, Ardinger HH, Wallace SE, Amemiya A, Bean LJH, Bird TD, Ledbetter N, Mefford HC, Smith RJH, Stephens K, editors. GeneReviews(R). Seattle: University of Washington
  9. Durr A. Autosomal dominant cerebellar ataxias: polyglutamine expansions and beyond. Lancet Neurol 2010
  10. 885–894. [CrossRef] 10. Tsoi H, Yu AC, Chen ZS, Ng NK, Chan AY, Yuen LY, Abrigo JM, Tsang SY, Tsui SK, Tong TM, Lo IF, Lam ST, Mok VC, Wong LK, Ngo JC, Lau KF, Chan TF, Chan HY. A novel missense mutation in CCDC88C activates the JNK pathway and causes a dominant form of spinocerebellar ataxia. J Med Genet 2014
  11. 590– 595. [CrossRef] 11. Cadieux-Dion M, Turcotte-Gauthier M, Noreau A, Martin C, Meloche C, Gravel M, Drouin CA, Rouleau GA, Nguyen DK, Cossette P. Expanding the clinical phenotype associated with ELOVL4 mutation: study of a large French-Canadian family with autosomal dominant spinocerebellar ataxia and erythrokeratodermia. JAMA Neurol 2014
  12. 470–475. [CrossRef] 12. Ayhan F, Ikeda Y, Dalton JC, Day JW, Ranum LPW. Spinocerebellar Ataxia Type 8. In: Adam MP, Ardinger HH, Pagon RA, Wallace SE, Bean LJH, Stephens K, Amemiya A, editors. GeneReviews® [Internet]. Seattle (WA): University of Washington, Seattle
  13. 1993–2018. 13. Krysa W, Sulek A, Rakowicz M, Szirkowiec W, Zaremba J. High relative frequency of SCA1 in Poland reflecting a potential founde