Baxalta now part of Shire
The main aim of the study is to check effectiveness, side effects, and tolerability of vonicog alfa (recombinant von Willebrand factor \[rVWF\]), with or without ADVATE, in the treatment and control of nonsurgical bleeding events in pediatric participants (less than (\<)18 years of age) with severe hereditary von Willebrand disease (VWD). The participants will be treated with vonicog alfa for 12-18 months. Their von Willebrand Disease will be treated by their doctor according to their doctor's usual clinical practice. During the study, participants will be followed up at clinics or over telephone calls.
Inclusion Criteria: * Diagnosis of severe von Willebrand disease (VWD) (defined as von Willebrand factor: ristocetin cofactor \[VWF:RCo\] less than \[\<\] 20 percent \[%\]): * Type 1 (VWF:RCo \<20 International Units per deciliter \[IU/dL\]); or * Type 2A (VWF:RCo \<20 IU/dL), Type 2B (as diagnosed by genotype), Type 2N (Factor VIII coagulation activity \[FVIII:C\] \<10 % and historically documented genetics), Type 2M; or * Type 3 (VWF:Ag less than or equal to \[=\<\] 3 IU/dL). * Age 0 to \<18 years at the time of Screening. * The participant has provided assent (if appropriate) and le…
Lyophilized powder and solvent to prepare solution for injection.
Packaged in single boxes with 2 glass vials, with one vial containing the lyophilized ADVATE and the second vial containing the diluent.