what we are told does not answer all of your questions Look- if there were any sign of efficacy leo would have stopped traffic on route 128 to announce it. There was none. They are giving up on IV and moving on to oral K but no timetable is given. Should they have tried an infusion of IV K at Dana farber years ago already now?? Maybe then we would know if the drug works. But no. We sit in limbo, with answers not coming for years