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http://dx.doi.org/10.5734/JGM.2021.18.2.75

Progress, challenges, and future perspectives in genetic researches of stuttering  

Kang, Changsoo (Department of Biotechnology and Institute of Basic Sciences, Sungshin Women's University)
Publication Information
Journal of Genetic Medicine / v.18, no.2, 2021 , pp. 75-82 More about this Journal
Abstract
Speech and language functions are highly cognitive and human-specific features. The underlying causes of normal speech and language function are believed to reside in the human brain. Developmental persistent stuttering, a speech and language disorder, has been regarded as the most challenging disorder in determining genetic causes because of the high percentage of spontaneous recovery in stutters. This mysterious characteristic hinders speech pathologists from discriminating recovered stutters from completely normal individuals. Over the last several decades, several genetic approaches have been used to identify the genetic causes of stuttering, and remarkable progress has been made in genome-wide linkage analysis followed by gene sequencing. So far, four genes, namely GNPTAB, GNPTG, NAGPA, and AP4E1, are known to cause stuttering. Furthermore, thegeneration of mouse models of stuttering and morphometry analysis has created new ways for researchers to identify brain regions that participate in human speech function and to understand the neuropathology of stuttering. In this review, we aimed to investigate previous progress, challenges, and future perspectives in understanding the genetics and neuropathology underlying persistent developmental stuttering.
Keywords
Speech; Stuttering; Lysosome; Genetics;
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