gene number BRCA2 10 BRCA1 8 PTEN 4 RB1 3 ATM 2 MUTYH 2 APC 1 BAP1 1 FGFR3 1 MEN1 1 PAH 1 RAD51D 1 RET 1 RUNX1 1 SBDS 1 SUFU 1 TP53 1