Thurly, I am a free member and so can not reply to private messages. The PFS is actually median PFS so it is calculated when 50% of the patients have progressed, just as in median OS when 50% of the patients have died. The question really is when does that get reported. If mojojo is correct then Peregrine may not release the results until 80% of the patients have progressed. When is that? Peregrine of course could report the median PFS sooner, it depends on what their needs are.