Descriptive terminology for ITP according to the IWG
| Term . | ITP description . |
|---|---|
| Newly diagnosed | <3-mo duration |
| Persistent | 3-12-mo duration |
| Chronic | >12-mo duration |
| Severe | Clinically relevant bleeding of sufficient magnitude to mandate treatment or requiring additional interventions or increase in drug dose |
| Refractory | Presence of severe ITP after splenectomy |
| Response | Platelet count ≥100 × 109/L measured on 2 occasions >7 d apart |
| Response | Platelet count ≥30 × 109/L and a greater than twofold increase in platelet count from baseline measured on 2 occasions >7 d apart |
| Term . | ITP description . |
|---|---|
| Newly diagnosed | <3-mo duration |
| Persistent | 3-12-mo duration |
| Chronic | >12-mo duration |
| Severe | Clinically relevant bleeding of sufficient magnitude to mandate treatment or requiring additional interventions or increase in drug dose |
| Refractory | Presence of severe ITP after splenectomy |
| Response | Platelet count ≥100 × 109/L measured on 2 occasions >7 d apart |
| Response | Platelet count ≥30 × 109/L and a greater than twofold increase in platelet count from baseline measured on 2 occasions >7 d apart |