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What do the GWAS Studies Say About Language in Schizophrenia
Przemysław Zakowicz1,2, Bartłomiej Sporniak3, Maksymilian Grabarczyk1
1Zakład Genetyki w Psychiatrii, Katedra Psychiatrii, Uniwersytet Medyczny im. Karola Marcinkowskiego w Poznaniu.
Introduction:
Schizophrenia links with altered language structure and may be evolutionary consequence of language development. High heritability of the disease led to recent endeavour in explaining the genetic background. Genome-Wide Association Studies (GWAS) indicate schizophrenia as highly polygenic disease with many receptor and synaptic plasticity pathways engaged.
Material And Methods:
Here we present a systematic review on the topic of schizophrenia GWAS findings and its potential relevance to language skills. We used GWAS catalog data to identify all significant associations in schizophrenia (including selected endophenotypes) and studied its relevance in the context of published data on language phenotypes associations.
Results:
Among genes involved in language evolution, FOXP1 and ROBO2 were indicated by GWAS as associated with schizophrenia. Evidence on schizophrenia linked SNPs was found for association with intelligence, educational attainment, cognitive abilities and language processing brain structures imaging results.
Conclusions:
The review discusses hypotheses of language alterations in schizophrenia as a consequence of impaired synaptic plasticity and neural network formation.
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