Genes with expression aberration specific to Sézary cells. Expression change of 32 genes are specific to primary Sézary cells and Sézary cell line Hut78, compared with normal CD4⁺ T cells and non-SS T-cell leukemia cell line Jurkat cells. Hierarchichal unsupervised clustering of those genes classify primary Sézary cells and Hut78 cells from normal controls, and from Jurkat cells. Among those genes, 16 are overexpressed in Sézary cells, whereas 16 are underexpressed in Sézary cells.