Heatmap differences between 336 patients treated for ALL and 59 age-similar controls were calculated for a limited set of reproducible edges and clustered using an agglomerative hierarchical clustering that identified four clusters with unique connectivity. Differences in edges demonstrated patterns of lower (group 2), higher (group 4), or mixed (group 1 & 3) connectivity relative to controls. Neurocognitive performance was substantially below normal on measures of memory (DSF – groups 2 & 3; DSB - group 1; Visual matching – group 2). This data driven approach was able to identify four distinct groups of patients with unique connectivity profiles and cognitive performance.
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