| Category | Time interval between SCT & onset of GVHD | Presence of acute GVHD features | Presence of chronic GVHD features |
| Acute GVHD ・ Classic ・ Late-onset |
<100 days >100 days |
Yes Yes |
No No |
| Chronic GVHD ・ Classic ・ Overlap syndrome |
No time limit No time limit |
No Yes |
Yes Yes |