ADC	Antibody-drug conjugate
ADCC	Antibody-dependent cell-mediated cytotoxicity
AI	Aromatase inhibitor
Akt	Protein kinase B
AMPK	Adenosine monophosphate-activated protein kinase
APC	Antigen-presenting cell
ATM	Ataxia telangiectasia-mutated kinase
ATP	Adenosine triphosphate
BC	Breast cancer
BRCA	Breast cancer-associated protein
CDK	Cyclin-dependent kinase
CK	Cytokeratins
CNS	Central nervous system
DNA	Deoxyribonucleic acid
dsDNA	Double-stranded deoxyribonucleic acid
EGFR/ERB	Epidermal growth factor receptor
ER	Estrogen receptor
FDA	Food and drug administration
gBRCA	Germline breast cancer associated protein gene
GM-CSF	Granulocyte-macrophage colony-stimulating factor
HER1	Human epidermal growth factor receptor 1
HER2	Human epidermal growth factor receptor 2
HER3	Human epidermal growth factor receptor 3
HER4	Human epidermal growth factor receptor 4
HLA-A2	Human leukocyte antigen-A2
HR	Hormone receptor
HRR	Homologous recombination repair
LKB1	Liver kinase B1
LumA	Luminal-A
LumB	Luminal-B
mTOR	Mammalian target of rapamycin
NAD+	Nicotinamide adenine dinucleotide
NHEJ	Non-homologous end joining
PAM	PI3K/Akt/mTOR pathway
PARP	Poly-ADP-ribose polymerase
PARPi	Poly-ADP-ribose polymerase inhibitor
PARylation	Poly-ADP-ribosylation
PIK3CA	Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha gene
PIP2	Phosphatidylinositol-4,5-biphosphate
PIP3	Phosphatidylinositol-3,4,5-triphosphate
PI3K	Phosphoinositide 3-kinase
PR	Progesterone receptor
PD-1	Programmed cell death protein 1
PD-L1	Programmed cell death ligand 1
PTEN	Phosphatase and tensin homolog
Rb	Retinoblastoma protein
RTK	Receptor tyrosine kinase
SERD	Selective estrogen receptor degrader
SERM	Selective estrogen receptor modulator
TAA	Tumor-associated antigen
T-DM1	Trastuzumab emtansine
T-DXd	Trastuzumab deruxtecan
TGF-β	Transforming growth factor beta
TKI	Tyrosine kinase inhibitor
TNBC	Triple-negative breast cancer
Trop-2	Trophoblast cell-surface antigen 2