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Whole-exome sequencing identifies genes associated with Tourette's disorder in multiplex families
Journal article   Peer reviewed

Whole-exome sequencing identifies genes associated with Tourette's disorder in multiplex families

Xiaolong Cao, Yeting Zhang, Mohamed Abdulkadir, Li Deng, Thomas V Fernandez, Blanca Garcia-Delgar, Julie Hagstrøm, Pieter J Hoekstra, Robert A King, Justin Koesterich, …
Molecular psychiatry, Vol.26(11), pp.6937-6951
11/2021
DOI: 10.1038/s41380-021-01094-1
PMCID: PMC8501157
PMID: 33837273
url
https://research.rug.nl/en/publications/ccf1b30c-c8ef-454f-8328-380cbff963afView
Open Access

Abstract

Tourette's Disorder (TD) is a neurodevelopmental disorder (NDD) that affects about 0.7% of the population and is one of the most heritable NDDs. Nevertheless, because of its polygenic nature and genetic heterogeneity, the genetic etiology of TD is not well understood. In this study, we combined the segregation information in 13 TD multiplex families with high-throughput sequencing and genotyping to identify genes associated with TD. Using whole-exome sequencing and genotyping array data, we identified both small and large genetic variants within the individuals. We then combined multiple types of evidence to prioritize candidate genes for TD, including variant segregation pattern, variant function prediction, candidate gene expression, protein-protein interaction network, candidate genes from previous studies, etc. From the 13 families, 71 strong candidate genes were identified, including both known genes for NDDs and novel genes, such as HtrA Serine Peptidase 3 (HTRA3), Cadherin-Related Family Member 1 (CDHR1), and Zinc Finger DHHC-Type Palmitoyltransferase 17 (ZDHHC17). The candidate genes are enriched in several Gene Ontology categories, such as dynein complex and synaptic membrane. Candidate genes and pathways identified in this study provide biological insight into TD etiology and potential targets for future studies.
Family Cadherin Related Proteins Genetic Predisposition to Disease - genetics Humans Nerve Tissue Proteins - genetics Pedigree Serine Endopeptidases Tourette Syndrome - genetics Whole Exome Sequencing

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