The vet tells me there is no cure and very little effective care. If she were in good health, she could expect to last about three years - but she's not in good health, so we'll just have to wait and see.

The vet suggested a veterinary school - I've already forgotten the name - that does research on the problem, but I'm not interested in making my kitty a lab rat. :/

Instead we've put her on Prednisone and we're watching to see if any nasty side effects crop up. We hope it'll get her eating a bit more (she's lost a lot of weight lately). *crosses fingers*