| Reason for initiation | |
| Subjects n | 76 |
| Poor response to prior medication | 60 (79) |
| Pulmonary | 33 (44) |
| Extrapulmonary | 45 (59) |
| Toxicity from therapy | 13 (17) |
| Patient preference to taper steroids | 3 (4) |
| >1 of the above reasons | 13 (17) |
Data are presented as n (%), unless otherwise stated.