I am not a doctor, but have done some reading
about lung cancers for a friend, and the treatment
you describe thus far seems to be in keeping with
the general info available to a lay person like
myself, including the statements issued by the US
Nat'l Cancer Institute, "cancernet".
For clinical trial info, you might consider a Medline
search, or calling 1-800-4-cancer. I notice you're
writing from Canada -- in this case the phone
number may be different, but it's worth a try.