STAT5A and neoplasm: However, tumor-priming with CTV-1 cells preferentially induced overexpression of genes including CCNB2, DUSP2, MAP2K3, MARCKSL1, STAT5A, and TNFAIP3. Table 1 lists the genes for which the expression is influenced by incubation with CTV-1 cells or IL-2 and the biological functions associated with their expression.