Table 1.

Statistics of four gene expression datasets.

NCBI GEO ID	GSE2466	GSE19147	GSE50006	GSE8835
#CLL case/control	72/11	25/8	188/32	42/24
#genes from CLL_042017	564	624	685	624
Sample source	Peripheral blood lymphocytes	Peripheral blood CD3+T cells	leukemia cells	Peripheral blood CD4 T cells and CD8 T cells
Sample population	Austria	Germany	USA	USA