Table 1.

Search strategy in PubMed database.

Number	Search terms
#1	Breast Neoplasms[MeSH]
#2	Breast Cancer[Title/Abstract]
#3	Breast Tumors[Title/Abstract]
#4	Cancer of Breast[Title/Abstract]
#5	Cancer of the Breast[Title/Abstract]
#6	Human Mammary Carcinoma[Title/Abstract]
#7	Mammary Carcinoma, Human[Title/Abstract]
#8	Mammary Neoplasm, Human[Title/Abstract]
#9	Mammary Neoplasms, Human[Title/Abstract]
#10	Neoplasms, Breast[Title/Abstract]
#11	Tumors, Breast[Title/Abstract]
#12	Breast Neoplasm[Title/Abstract]
#13	Breast Tumor[Title/Abstract]
#14	Cancer, Breast[Title/Abstract]
#15	Carcinoma, Human Mammary[Title/Abstract]
#16	Carcinomas, Human Mammary[Title/Abstract]
#17	Human Mammary Carcinomas[Title/Abstract]
#18	Human Mammary Neoplasm[Title/Abstract]
#19	Human Mammary Neoplasms[Title/Abstract]
#20	Mammary Carcinomas, Human[Title/Abstract]
#21	Neoplasm, Breast[Title/Abstract]
#22	Neoplasm, Human Mammary[Title/Abstract]
#23	Neoplasms, Human Mammary[Title/Abstract]
#24	Tumor, Breast[Title/Abstract]
#25	or/1–24
#26	Pyruvate kinase M2[Title/Abstract]
#27	PKM2[Title/Abstract]
#28	or/26–27
#29	Prognos∗
#30	Survival
#31	or/29–30
#32	#25 and #28 and #31