I believe you are talking about mitomycin as one of the chemo agents John is receiving, in addition to the Xeloda. As Jeff had mentioned, the clinical trials are quite strict in their criteria thus eliminating many patients for varied reasons however, I would always check under clinicaltrials.gov in order to assure myself that I am not missing anything which could possibly be another step in a future treatment plan. Also, John's oncologist might very well have another agent in mind for whenever it may be needed.
As for the present, it is wonderful to know that John has been able to beat the infection, and is feeling well.
I am following Kris in wanting you to know that I am thinking of you and wishing for the best.
THIS INFORMATION IS NOT INTENDED NOR IMPLIED TO BE A SUBSTITUTE FOR PROFESSIONAL MEDICAL ADVICE. YOU SHOULD ALWAYS SEEK THE ADVICE OF YOUR PHYSICIAN OR OTHER QUALIFIED HEALTH CARE PROVIDER