Table 1.

Risk stratification of inhibitor patients

	Good-risk features	Poor-risk features
Age at start of ITI	<8 y	≥8 y
Historical peak titer	<200 BU/mL	≥200 BU/mL
Pre-ITI titer	<10 BU/mL	≥10 BU/mL
Time to titer decline to <10 BU/mL before ITI	<24 mo	≥24 mo

Data from Kempton and Meeks.⁷