Functional categories of genes differentially expressed in patients with AL and patients with MM. The bar graph depicts the major functional classes of the genes in the 3 highest scoring networks obtained by the Ingenuity analysis. There were 26 genes that were selected for further analysis that had a significantly higher average expression level ▦ in AL compared to patients with MM and 21 genes selected for further analysis that had a significantly lower average expression level (□) in patients with AL compared to patients with MM.