BC	breast cancer
βME	β-mercaptoethanol
CNB	core needle biopsy
ER	estrogen receptor
EtOH	ethanol
FFPE	formalin-fixed paraffin-embedded
FF	fresh-frozen
GEP	gene expression profiling
HER2	human epidermal growth factor receptor 2
IDC	invasive ductal carcinoma
ILC	invasive lobular carcinoma
IRG	immune-related gene
PCA	principal component analysis
rcf	relative centrifugal force
RIN	RNA integrity number
RNA	ribonucleic acid
RNase	ribonuclease
RUV	remove unwanted variation
SOP	standard operating procedure
UZ Brussel	Universitair Ziekenhuis Brussel
VUB	Vrije Universiteit Brussel