Organ Replacement Progress - Pancreas??? We've successfully replaced heart parts (valves) for decades. Artificial heart recipients have lived for decades. Kidney failure folks have lived for decades. Jobs' pancreas fails; he dies. Where are we on this? Gall bladders are removed all the time. Liver failures can sometimes have their own regrown in time enough to self-replant. At least they can take a third of another's and survive. What's so complicated about the pancreas??? Apparently, it does more than just regulate insulin.