Main reasons for withdrawal during 1-year follow-up according to treatment
| Reason, n (% of withdrawals) | GP2017 | SB5 |
| Lack of effect, n (%) | 26 (49) | 38 (42) |
| Adverse events, n (%) | 15 (28) | 21 (23) |
| Cancer, n (%) | 1 (2) | 3 (3) |
| Remission, n (%) | 2 (4) | 6 (7) |
| Pregnancy, n (%) | 0 (0) | 0 (0) |
| Infection, n (%) | 1 (2) | 0 (0) |
| Death, n (%) | 1 (2) | 0 (0) |
| Loss to follow-up, n (%) | 0 (0) | 5 (6) |
| Surgery, n (%) | 0 (0) | 0 (0) |
| Other, n (%) | 3 (6) | 7 (8) |
| Several reasons, n (%) | 3 (6) | 7 (8) |
| Not stated, n (%) | 1 (2) | 3 (3) |
| Total | 53 (100) | 90 (100) |