I am thinking same thing....
My wife has stag IV and was on FOLFOX + Avastin for 3 months (Colon surgery before chemo) than liver surgery due to her neuropathy (She still has neuropathy problem even her last Oxaliplatin was about 10months ago) she got only Avastin and Xeloda for 3 months after liver surgery.
But after 5month from last chemo cancer came back vary aggressive 2.5cm in 3months on the liver and possible 12 spots on her lung.
Her oncologist sugguests Irenotecan/Erbitux/Avastin my wife refuse to get Erbitux as it could cause Acne like skin problem
Now I am searching internet to see what's available so I could discuss with her Oncologist....
I have same question why not FOlFIRI + Avastin than Irenotecan/Erbitux/Avastin?
Have you checked this link? I know there is just lots of infos on trial study on Irenotecan/Erbitux but this link says if you got 1st FOLFOX 2nd choice is FOlFIRI or other way around.
Once I find more infos from her Oncologist I will post it here or if you find more about it could you let me know as well?
http://www.xagena.it/news/medicinenews_net_news/bf0a8e1dc5c8