CRC	Colorectal cancer
mCRC	Metastatic colorectal cancer
CT	Computed tomography
CTCs	Circulating tumor cells
PFS	Progression-free survival
OS	Overall survival
FDA	Food and Drug Administration
EMT	Epithelial to mesenchymal transition
CEA	Carcinoembryonic antigen
HR	Hazard ratio
CI	Confidence interval
R	Responder
NR	Non-responder
ECOG	Eastern Cooperative Oncology Group
PS	Performance status
Mests.	metastasis