This is very interesting question. There is a debate whether the low dose regimens (50 IU FVIII/kg, three times a week is better or 200 IU FVIII/kg, once a day regimen is better and advantageous Please refer to the following reference for more details. I am not totally aware of the REScue study which would have shed some light on this subject.
The immune tolerance induction (ITI) dose debate: does the International ITI Study provide a clearer picture?