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Unsupervised clustering of cases by standardized whole chromosome log2 ratios. Principal component analysis (A) and unsupervised hierarchical clustering as a heatmap (B) demonstrate clustering of low hypodiploid and near triploid cases separately from high hyperdiploid cases. Information contributed by each chromosome (information gain) displayed as a bar chart underneath (C). Cases within the incorrect cluster based on initial cytogenetic classification are detailed in Table 1
