gene number BRCA2 14 ATM 9 RB1 5 APC 4 ATR 4 BRCA1 4 BRIP1 4 POLE 4 BLM 3 ERCC4 3 MSH2 3 MSH6 3 PALB2 3 TP53 3 DICER1 2 FANCA 2 SDHA 2 TSC1 2 VHL 2 WRN 2 AR 1 ASXL1 1 ATP7B 1 CBL 1 CDK4 1 CSF3R 1 DNMT3A 1 DPYD 1 ERBB4 1 EXT2 1 FANCC 1 FANCE 1 FANCG 1 FH 1 GLB1 1 GSS 1 IDH2 1 JAK2 1 MEN1 1 MET 1 MPL 1 MRE11A 1 MUTYH 1 RAD51 1 RAD51D 1 RECQL 1 RET 1 SBDS 1 SDHB 1 SF3B1 1 SMAD4 1 TSC2 1 UGT1A1 1 WT1 1