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Table 1 Description of the datasets used in this study

From: A qualitative transcriptional signature to reclassify histological grade of ER-positive breast cancer patients

Datasets

Platform

HG1

HG2

HG3

#Genes

Training datasets

 GSE19615

Affymetrix array

23

–

25

20,486

 GSE21653

Affymetrix array

37

–

47

20,486

 GSE1456

Affymetrix array

26

–

40

12,432

 GSE3494

Affymetrix array

62

–

33

12,432

 EGAD00010000210a

Illumina beadchip

30

–

221

25,186

 EGAD00010000211a

Illumina beadchip

35

–

125

25,186

 TCGA

Illumina HiSeq 2000

58

–

170

20,720

Validation datasets

 GSE7390

Affymetrix Array

29

68

35

12,432

 GSE6532

Affymetrix Array

29

31

12

12,432

 GSE4922

Affymetrix Array

48

60

11

12,432

 EGAb

Illumina beadchip

35

120

46

25,186

  1. Note: a denoted dataset provided by the Molecular Taxonomy of Breast Cancer International Consortium (METABRIC) [40]. EGAb denoted dataset integrated from EGAD00010000210 and EGAD00010000211