x 1 CCND1 2 BCL2 3 E2F1 4 APAF1 5 BAX 6 CDK2 7 CDK4 8 MDM2 9 RB1 10 CDKN1A 11 TP53 12 GADD45A 13 ATM 14 TIMP3 15 PCNA 16 CCNE1