An international team of scientists has identified hundreds of genes that are essential for early brain development, uncovering new insights into the biological roots of neurodevelopmental disorders, including autism, and describing a previously unknown genetic condition that disrupts brain growth ….
The study, published in the peer-reviewed journal Nature Neuroscience, used large-scale CRISPR gene-editing technology to systematically determine which genes are required as embryonic stem cells developed into brain cells.
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While the findings span a wide range of neurodevelopmental conditions, the implications for autism stood out …. The study’s results suggest that not all neurodevelopmental disorders arise from the same types of genetic disruptions and that timing during brain development plays a critical role.
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According to the study, genes that are broadly essential for basic cellular survival tend to be associated with more global developmental delay. In contrast, genes that are especially critical at specific stages of nerve cell formation show a stronger association with autism. This distinction helps explain why autism often presents differently from other neurodevelopmental disorders, even when symptoms overlap.
