AEMPS	Spanish Agency for Medicines and Health Products
AEs	Adverse Events
CDK	Cyclin-Dependent Kinase
CNS	Central Nervous System
ECOG	Eastern Cooperative Oncology Group
EMA	European Medicines Agency
ER	Oestrogen Receptor
ET	Endocrine Treatment
FDA	Food and Drug Administration
FN	Febrile Neutropenia
G-CSF	Granulocyte Colony-Stimulating Factor
HER2	Human Epidermal Growth Factor Receptor 2
HR	Hazard Ratio
IA	Aromatase Inhibitors
IHC	Immunohistochemistry
IQR	Interquartile Range
mBC	Metastatic Breast Cancer
mOS	Median Overall Survival
mPFS	Median Progression-free Survival
mTNBC	Metastatic Triple-Negative Breast Cancer
PR	Progesterone Receptor
SG	Sacituzumab Govitecan
Trop-2	Trophoblast Cell Surface Antigen 2