Table 2.

A summary of pCR incidence among different subgroups

	PIK3CA status	pCR	Non‐pCR	pCR rate (%)
Overall	MT	323	841	28
	WT	1252	2052	38
HR+	MT	39	268	13
	WT	276	731	27
HR‐	MT	50	107	32
	WT	247	351	41
HER2+	MT	287	636	31
	WT	1068	1482	42
HER2‐	MT	17	132	11
	WT	94	317	23
Exon 9	MT	28	175	14
Exon 20	MT	76	320	19

HR, hormone receptor; MT, mutant; pCR, pathological complete response; WT, wild type.