*1.Please list your first name, last name, and email:(Required.)

First name:

Last name:

Email:

*2.What is your specialty?(Required.)

*3.How many patients with colorectal cancer do you treat each week?(Required.)

1 to 10

11 to 25

26 to 50

I am not directly involved in patient care

*4.Which of the following colorectal cancer clinical trials report on the anti-EGFR therapy rechallenge & ctDNA use?(Required.)

CRICKET Study

CAVE Study

CHRONOS Study

All of the above

*5.Which of the following are known mechanisms of resistance post anti-EGFR therapy in patients with metastatic colorectal cancer?(Required.)

EGFR/RAS/RAF mutations

HER2-amplification

MET-amplification

All of the above