BRCA1	Breast cancer type 1 susceptibility protein
CK 5/6	Cytokeratin 5/6
CT	Chemotherapy
DNA	Deoxyribonucleic acid
EGFR	Epidermal growth factor receptor
ER	Estrogen receptor
HER2	Human epidermal growth factor receptor 2
IHC	Immunohistochemistry
MS-PCR	Methylation-specific polymerase chain reaction
OS	Overall survival
PARP-1	Poly(ADP-ribose) polymerase 1
PARPi	PARP inhibitor
PCR	Polymerase chain reaction
PR	Progesterone receptor
RFS	Relapse-free survival
RNA	Ribonucleic acid
TMA	Tissue microarray
TNBC	Triple-negative breast cancer