Table 1.

Main characteristics of the selected datasets.

Series Accession	Number of Control	Number of BC Tissue	Total Number	Samples	Platform	Ref.
				Breast Cancer Datasets
GSE57897	31	422	453	Normal and BC tissues	GPL18722 Homo sapiens microRNA array	[38]
GSE97811	16	45	61	Normal and BC FFPE tissues	GPL21263 3D-Gene Human miRNA V21_1.0.0	[39]
GSE58606	11	122	133	Normal and BC FFPE tissues	GPL18838 miRCURY LNA microRNA Array 7th generation	[40]
GSE38167	23	31	54	Normal and BC FFPE tissues	GPL14943 Agilent-029297 Human miRNA Microarray	[41]
GSE32922	15	22	37	Normal and BC tissues	GPL7723 miRCURY LNA microRNA Array, v.11.0	[42]
GSE45666	15	101	116	Normal and BC tissues	GPL14767 Agilent-021827 Human miRNA Microarray	[43]
GSE26666	17	77	94	Frozen normal and BC tissues	GPL8227 Agilent-019118 Human miRNA Microarray 2.0	[44]
GSE40525	59	61	120	Normal and BC FFPE tissues	GPL8227 Agilent-019118 Human miRNA Microarray 2.0	[45]
	Samples before Diet	Samples after Diet		Diet Datasets
GSE27474	14	14	28	Serum Samples	GPL8179 Illumina Human v2 MicroRNA expression beadchip	[46]
GSE87103	12	12	24	Subcutaneous adipose tissues	GPL11434 miRCURY LNA microRNA Array, 6th generation	[47]
GSE75026	12	12	24	PBMCs samples	GPL8179 Illumina Human v2 MicroRNA expression beadchip	[48]
	Samples before Exercise	Samples after Exercise		Exercise Datasets
GSE133910	46	44	90	Peripheral blood samples	GPL25134 Agilent-070156 Human_miRNA_V21.0_Microarray	[49]
GSE87103	12	12	24	Subcutaneous adipose tissues	GPL11434 miRCURY LNA microRNA Array, 6th generation	[47]
GSE45041	10	10	20	White blood cells	GPL16770 Agilent-031181 Unrestricted Human miRNA V16.0	[50]
GSE51837	12	12	24	Monocytes	GPL10850 Agilent-021827 Human miRNA Microarray (V3)	[51]
GSE41915	11	11	22	NK cells	GPL10850 Agilent-021827 Human miRNA Microarray (V3)	[52]
GSE28745	12	12	24	PBMCs	GPL8227 Agilent-019118 Human miRNA Microarray 2.0	[53]
GSE18999	11	11	22	Neutrophils	GPL7731 Agilent-019118 Human miRNA Microarray 2.0	[54]