Record of bleeding episodes before and after starting the patient on long-acting factor IX Fc fusion protein
| Bleeding episode | Age before starting on long-acting factor IX Fc fusion protein | On-demand treatment with long-acting factor IX Fc fusion protein | Prophylaxis treatment with long-acting factor IX Fc fusion protein |
| 1. | 6 months | No | No |
| 2. | 11 months | No | No |
| 3. | 15 months | No | No |
| 4. | 19 months | No | No |
| 5. | 20 months | No | Yes (started on prophylaxis) |
| 6. | 22 months | No (minor gun bleeding managed with local tranexamic acid) | Yes |