Hi Groenevelt68,
I didn't know radiotherapy is an option after you had 6 weeks of therapy. Your husband might have had lower dose of it so that can be an option. We were told the same thing about surgery that they don't recommend to have the second one within a year.
There is also another clinical trial, not the AMG 595 that my partner is getting this Tuesday, which will start to recruit in late April or May. It is a randomized phase II study (there are 3 arms in the study), investigating a new drug called LY2157299 with another drug used more commonly called lomustine. You may want to explore this option. We don't want to wait for this one as everyday is so precious. I find it's hard to just sit tight and do nothing but wait. It took us 5 weeks from getting the bad news (7 March), seek 2nd opinion, went through screening phase, to getting a treatment from this clinical trial (10 April).
Take care