Table 2.

Summary of Results of Early versus Delayed ATG IS with AAV Vector Administration

	NAb Titer (Pre-treatment)	Gene Copy Number/Cella	hFIX Plateau (ng/mL)	Inhibitor
Group 1 (Early)
1001	<1:3	3	96	negative
1002	<1:3	0.48	0	positive (0.5 BU)
1003	<1:3	0.75	89 (pre-inhibitor)	positive (5.5 BU)
Group 2 (Delayed)
2001	1:3	0.66	5	negative
2102	<1:3	0.25	25	negative
2003	1:3	0.19	215	negative

^aWeek 16.