FDA	Food and Drug Administration
MMR	mismatch repair
IHC	immunohistochemistry
MLH1	mutL homologue 1
MSH2	mutS homologue 2
MSH6	mutS homologue 6
PMS2	postmeiotic segregation increased 2
MSI	Microsatellite instability
hMMR	MMR-heterogeneous
dMMR	MMR-deficient
pMMR	MMR-proficient
PTEN	Phosphatase and tensin homolog
PI3K	phosphatidylinositol-3-kinase
Akt	protein kinase B
BCIRG	Breast Cancer International Research Group
ER	estrogen receptor
SCNA	somatic copy number alteration
HR	hazard ratio
PPV	positive predictive value
PR	progesterone receptor
LDT	locally developed tests
TNBCs	triple-negative breast cancers
TMAs	tissue microarrays
PD-L1	programmed death-ligand 1
IRB	Institutional Review Board
SD	standard deviation
WHO	World Health Organization
AJCC	American Joint Committee on Cancer
FFPE	formalin-fixed, paraffin-embedded
CAP	College of American Pathologists
OR	odds ratio
CI	confidence interval