Table 2

Spectrum of PIK3CA mutation type

PIk3CA mutation	Baseline	RD
PIk3CA mutation	N (%)	N (%)
Total	19 (25.7)	22 (25.3)
CA420R	1 (1.3)	2 (2.3)*
N345x	2 (2.7)	2 (2.3)
H1047x	9 (12.3)	12 (13.8)*
E542x	4 (5.4)	2 (2.3)
E545x	3 (4.0)	6 (6.9)*

*Two patients had a double PIK3CA mutation on RD (C420R+H1047× and E545x+H1074×).
RD, residual disease.