Symbol # of mutant samples Percentage of the mutant samples
PIK3CA 263 33.89%
TP53 258 33.25%
CDH1 55 7.09%
PTEN 29 3.74%
AKT1 19 2.45%
ATM 17 2.19%
RB1 14 1.80%
ERBB2 13 1.68%
HNF1A 9 1.16%
FGFR2 8 1.03%
ERBB4 6 0.77%
FBXW7 6 0.77%
GNAS 6 0.77%
KRAS 6 0.77%
ABL1 5 0.64%
APC 5 0.64%
EGFR 5 0.64%
JAK2 5 0.64%
JAK3 5 0.64%
KIT 5 0.64%
MET 5 0.64%
Table 4: Ion AmpliSeq CHPv2 genes frequently mutated in TCGA breast cancer samples