My father was also diagnosed with stage 4b a little over 2 months ago. Since this happened any new treatments I've heard of that seem to be promising are always available to all stages except the one my dad has. Cyberknife, TNferade are both recent treatments showing success. Everywhere I look I get discoursged, any glimpse of hope is soon gone once I find out my father isn't eligible. Not sure if you can relate but I was wondering how your dad is doing and what treatment he may be getting?