Cymek said:

Spiny Norman said:

The therapy, created by the AIM Institute of Medicine under Dr. Toru Miyazaki, targets chronic kidney disease, a leading cause of death in older cats. It uses a specialized protein to help macrophages clear waste from the kidneys, partially restoring their function and slowing kidney failure.

That sounds promising

It does indeed. We lost our last cat from kidney failure. Spocky did an awesome job for a couple of years giving her an IV drip every day to help her failing kidneys.
I wonder what the next most common cause of cat deaths might be then.