For the first time, a research team led by the Mark and Mary Stevens Neuroimaging and Informatics Institute (Stevens INI) at the Keck School of Medicine of USC has decoded the genetic blueprint of the corpus callosum—the brain’s largest bundle of nerve fibers responsible for connecting the left and right hemispheres. Using advanced AI-driven analysis of brain imaging and genetic data from thousands of individuals, the researchers identified specific genes and biological pathways that shape the development and function of this critical structure. The findings, published in a leading scientific journal, offer unprecedented insight into how genetic factors influence the brain’s wiring. This breakthrough could lead to new understanding of mental health conditions such as schizophrenia, autism spectrum disorder, and attention-deficit/hyperactivity disorder (ADHD), as well as neurological diseases like multiple sclerosis and stroke, where corpus callosum integrity is often compromised. By linking genetic variation to structural differences in the brain, the study paves the way for earlier detection, personalized treatments, and potential interventions aimed at preserving or repairing neural connectivity. The team’s approach, which combines large-scale neuroimaging with machine learning and genomics, sets a new standard for decoding the complex interplay between genes and brain structure.