The Complex Genetic Landscape of Hereditary Ataxias in Turkey and Implications in Clinical Practice
| العنوان: | The Complex Genetic Landscape of Hereditary Ataxias in Turkey and Implications in Clinical Practice |
|---|---|
| المؤلفون: | Mefkure Eraksoy, Onder Us, Sibel Ertan, Hacer Durmus, Filiz Koç, Nazan Saner, Şeyma Tekgül, Pinar Tekturk, Cemile Kocoglu, Gençer Genç, Robin Palvadeau, Feza Deymeer, Güneş Kızıltan, Ece Kartal, Hulya Apaydin, Sevda Erer Özbek, Cenk Akbostanci, Suna Lahut, Yesim Parman, Erdi Şahin, Dilcan Kotan, Hülya Tireli, Murat Gultekin, Zeynep Özözen Ayas, Ersin Tan, Sibel Özekmekçi, Irmak Şahbaz, Hamit Acer, Zeynep Tufekcioglu, Dilek Ince Gunal, Hasmet Hanagasi, İhsan Şükrü Şengün, Arman Çakar, Esen Saka Topcuoglu, Gülşah Şimşir, Gülden Akdal, Elif Bayraktar, Fulya Akçimen, Ayşe Bora Tokçaer, Aysegul Gunduz, Uluç Yiş, Gul Serdaroglu, Atay Vural, Ayse Altintas, Hüseyin A. Şahin, Özgür Ömür, Tuğçe Gül, Gül Demet Kaya Özçora, Müge Kovancılar Koç, Vildan Yayla, Aksel Siva, Semra Hiz, Meral Topçu, Piraye Oflazer, Başar Bilgiç, M. Osman Çorbalı, Semiha Kurt, Elçin Bora, Nesli E. Şen, Kadriye Agan, A. Nazli Basak, Halil Güllüoğlu, Ceren Tunca, Sefer Kumandaş, Muhsin Elmas, Özgür Öztop Çakmak, Bulent Elibol, Aysun Soysal, Zeynep E. Kaya Gulec, Caroline Pirkevi Çetinkaya, Dürdane Aksoy, Aslı Gündoğdu Eken |
| المساهمون: | Ege Üniversitesi, Elmas, Muhsin |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | 0301 basic medicine, Proband, congenital, hereditary, and neonatal diseases and abnormalities, Ataxia, Turkey, Consanguinity, 03 medical and health sciences, symbols.namesake, Wholeexome sequencing, 0302 clinical medicine, medicine, Genetics, Humans, Spinocerebellar Ataxias, genetics, Exome sequencing, Spinocerebellar Degenerations, Sanger sequencing, biology, ataxia, medicine.disease, Optic Atrophy, 030104 developmental biology, Neurology, Muscle Spasticity, whole‐, Spinocerebellar ataxia, symbols, Frataxin, biology.protein, Neurology (clinical), medicine.symptom, Heterogeneity, heterogeneity, Trinucleotide repeat expansion, exome sequencing, 030217 neurology & neurosurgery |
| الوصف: | Background The genetic and epidemiological features of hereditary ataxias have been reported in several populations; however, Turkey is still unexplored. Due to high consanguinity, recessive ataxias are more common in Turkey than in Western European populations. Objective To identify the prevalence and genetic structure of hereditary ataxias in the Turkish population. Methods Our cohort consisted of 1296 index cases and 324 affected family members. Polymerase chain reaction followed by Sanger sequencing or fragment analysis were performed to screen for the trinucleotide repeat expansions in families with a dominant inheritance pattern, as well as in sporadic cases. The expansion in the frataxin (FXN) gene was tested in all autosomal recessive cases and in sporadic cases with a compatible phenotype. Whole-exome sequencing was applied to 251 probands, selected based on the family history, age of onset, and phenotype. Results Mutations in known ataxia genes were identified in 30% of 1296 probands. Friedreich's ataxia was found to be the most common recessive ataxia in Turkey, followed by autosomal recessive spastic ataxia of Charlevoix-Saguenay. Spinocerebellar ataxia types 2 and 1 were the most common dominant ataxias. Whole-exome sequencing was performed in 251 probands with an approximate diagnostic yield of 50%. Forty-eight novel variants were found in a plethora of genes, suggesting a high heterogeneity. Variants of unknown significance were discussed in light of clinical data. Conclusion With the large sample size recruited across the country, we consider that our results provide an accurate picture of the frequency of hereditary ataxias in Turkey. (c) 2021 International Parkinson and Movement Disorder Society Suna and Inan Kirac Foundation; Koc UniversityKoc University; Bogazici UniversityBogazici University This work was supported by funds from Suna and Inan Kirac Foundation, Koc University, Bogazici University. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7bd268a54a7c084aa9507fb520b75a7dTest https://avesis.gazi.edu.tr/publication/details/dc537293-2ef2-4fdc-932d-c75876075839/oaiTest |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....7bd268a54a7c084aa9507fb520b75a7d |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |