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

BMC Genomics

Table 1 Description of the datasets used in this study

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
EGAD00010000210^a	Illumina beadchip	30	–	221	25,186
EGAD00010000211^a	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
EGA^b	Illumina beadchip	35	120	46	25,186

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

ISSN: 1471-2164