Albert, very glad to hear that you had such a good response!
We are seeing more and more responses from MSS patients, with different mutations, from immunotherapy trials. So far, several have good responses and later there is progression, but that doesn't stop them from going for other immunotherapy trial, for hopefully more time with responses and tolerable side effects. You can see some posts in this forum, but if you're interested, you could join a private group of people, on Facebook, who are all doing or looking for different MSS clinical trials --immunotherapy mainly. Just PM me, if you're interested.
You can see a link to a curated clinical trials finder on my signature --the database is curated by Tom Marsilje, user DK37 in this forum, a stage IV patient, scientist and patient advocate
I know people on a similar trial with the addition of Avastin, and people obtaining atezolizumab and cobimetinib from the companies that produce them, out of trial, when their oncologists prescribe them --pharmas have access programs so insurance cover that. Well, it used to be that way, in USA; not sure if that will last.
Wishing you the best with this trial and with the next immunotherapy combo!