Study in mCRC Patients RAS/BRAF wt Tissue and RAS Mutated LIquid BIopsy to Compare FOLFIRI Plus CetuxiMAb or BevacizumaB

"This is the treatment assigned to experimental arm:~All treatments will continue until disease progression, death, unacceptable toxicity, clinical decision or consent withdrawn."

"This is the treatment assigned to control arm:~All treatments will continue until disease progression, death, unacceptable toxicity, clinical decision or consent withdrawn."

"FOLFIRI regimen: This is the treatment assigned to control and to experimental arms:~All treatments will continue until disease progression, death, unacceptable toxicity, clinical decision or consent withdrawn."

"FOLFIRI regimen: This is the treatment assigned to control and to experimental arms:~All treatments will continue until disease progression, death, unacceptable toxicity, clinical decision or consent withdrawn."

"FOLFIRI regimen: This is the treatment assigned to control and to experimental arms:~All treatments will continue until disease progression, death, unacceptable toxicity, clinical decision or consent withdrawn."