Table 1.

Rationship Between PIK3CA Mutations and HER2 Amplification or p53 Mutation.

	PIK3CA mutations		χ2	P value
	Mutant	Wild
HER2 ampilification
Positive Negative	14 29	26 44	0.245	0.621
P53 mutation
Mutant-type Wild-type	10 33	18 52	0.086	0.769