ERBB2	Epidermal growth factor receptor 2
C-CAT	Center for Cancer Genomics and Advanced Therapeutics
GEJ	Gastroesophageal junction
TCGA	The Cancer Genome Atlas
ACRG	The Asian Cancer Research Group
MSI	Microsatellite instability
TMB	Tumor mutational burden
FFPE	Formalin-Fixed Paraffin-Embedded
N/A	Not applicable
RECIST	Response Evaluation Criteria in Solid Tumors
MSI-H	Microsatellite instability high
PR	Partial response
SD	Stable disease
PD	Progressive disease
NE	Not evaluated
CGP	Comprehensive genomic profiling
T-DXd	Trastuzumab deruxtecan