Of the 79 E2F targets we identified in late carcinoma, 14 genes (H2afz, Spc24, Cenpm, Gins1, Pola1, Prim1, Nop56, Kif18b, Mms22l, Lyar, Tcf19, Cdca3, Trip13, Ncapd2) are not previously described in breast cancer. This evidence concerns the gene PRIM1 and breast carcinoma.