Table 1.

Patient characteristics in neoadjuvant chemotherapy studies

Dataset	Percentage with the following features							Chemo drugs*	Citation#
	N	Age≤50	T3/4	Node+	ER−	HER2+	Grade3
GSE25055	87	59	53	74	57	3	61	A, T, C, +/− F	(18)
GSE25065	140	52	49	63	34	1	64	A, T, C, F	(18)
GSE20194	230	39	34	68	37	17	54	A, T, C, F	(20)
GSE20271	45	58	42	60	44	27	56	A, T, C, F	(19)
GSE42822	11	45	82	73	73	55	73	A, T, C, F	(22)
Combined	513	48	43	67	41	12	59

^*A=doxorubicin or epirubicin; T=paclitaxel or docetaxel; C=cyclophosphamide; F=5-fluorouracil or capecitabine; ER=estrogen receptor; HER2=human epidermal growth factor receptor 2; T=tumor stage; ER and HER2 denote status determined by immunohistochemistry.