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Abstract #2061

More Features in the Mahalanobis Distance Lead to Improved Diagnostic Classification of Autistic and Non-autistic Individuals

Luis Arnoldo Vazquez1, Doug Dean III1, Molly Prigge2, Carolyn King2, Jubel Morgan2, Nagesh Adluru1, Janet Lainhart1, Brandon Zielinski3, Jace King2, Andrew Alexander1, and Jose Guerrero-Gonzalez1
1University of Wisconsin - Madison, Madison, WI, United States, 2University of Utah, Salt Lake City, UT, United States, 3University of Florida, Gainesville, FL, United States

Synopsis

Keywords: White Matter, Brain, Autism Spectrum Disorder, Precision Medicine, Replicability

Motivation: Heterogeneity of neuroimaging findings remains a challenge to identify specific brain-related phenotypes in ASD. Quantitative metrics of individual deviation across brain measurements are needed for parsing variation and identifying individuals who may or may not have abnormal brain structure.

Goal(s): This study aims to quantify individual brain differences in individuals with and without ASD.

Approach: We investigated the Mahalanobis distance to characterize multidimensional brain measures of microstructure in individuals with and without ASD in a set of white matter regions.

Results: We found multivariate Mahalanobis distance is superior to univariate comparisons at distinguishing between individuals with and without ASD.

Impact: Normative modeling and multivariate approaches may provide informative metrics for parsing heterogeneity in the multivariate patterns of brain development in autistic individuals.

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Keywords