GADD45B and breast cancer: The 39 genes included 11 early-response genes (FOS, JUN, RGS1), six stress-response/immune genes (DUSP1, GADD45B, ATF3), four snoRNA (SNORD3C, SNORD3D), four haemoglobin (HBA2, HBB) and five genes associated to breast cancer progression (SIK1, TOB1, BHLHB2).