How are treatment durations and results?

Immunosupressants improve 10-year life expectancy to 89%, continued for 1-2 years (65% remission in 18 months and 80% remission past 3 years, but histologic remission lags behind clinical by 3-6 months) 9% experience tx failure (resist steroids, treated w/other immunosupressants) 13% improve w/out complete remission (need low-dose long term prednisone)