Table 1

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	Prophylactic treatment with long-acting factor IX Fc fusion protein
1.	7 months	No	No
2.	8 months	No	No
3.	9 months	No	No
4.	10 months	No	No
5.	12 months	No	No
6.	15 months	No	No
7.	16 months	No	No
8.	19 months	Yes
9.	22 months	Yes	No
10.	24 months	Yes	No
11.	27 months	Yes	Yes (started on prophylaxis)