About this trial
The purpose of the aPCC-emicizumab safety study is to investigate the hemostatic efficacy as measured by thrombin generation, of a low personalized dose of aPCC (FEIBA) in children and adults with hemophilia A and inhibitors on emicizumab prophylaxis.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Moderately severe hemophilia A, defined as FVIII level <0.05 IU/mL before development of an inhibitor
Age ≥6 years of age at time of informed consent
Documented on 2 occasions a high titer inhibitor (>5 BU/mL) with a 72-hour washout within 2 years of enrollment
Parent/guardian (Legally Authorized Representative) or the patient has provided written informed consent
Disqualifiers
Inherited or acquired bleeding disorder other than hemophilia A excluding low VWF (>30% VWF:RCo or VWF:GP1bm)
Had an active bleed requiring factor therapy at screening
Previous or current treatment for thromboembolic disease or signs of thromboembolic disease (excluding previously resolved line-associated thrombosis)
Had a surgical procedure 14 days before screening
Trial design
Single group
Treatments tested in this trial
Emicizumab
DrugHEMLIBRA® is a bispecific factor IXa- and factor X-directed antibody indicated for routine prophylaxis to prevent or reduce the frequency of bleeding episodes in adult and pediatric patients ages newborn and older with hemophilia A (congenital factor VIII deficiency) with or without factor VIII inhibitors.
FEIBA
DrugFEIBA™ is an Anti-Inhibitor Coagulant Complex indicated for use in hemophilia patients with inhibitors for: control and prevention of bleeding episodes, perioperative management, and routine prophylaxis to prevent or reduce the frequency of bleeding episodes. The max dose allowed for aPCC will be 50 U/kg dose given at a single visit.
rFVIIa
DrugrFVIIa is a coagulation factor VIIa concentrate indicated for the treatment and control of bleeding episodes occurring in adults and adolescents with hemophilia with inhibitors.
Treatment groups
Trial outcomes
Primary outcomes
Thrombin generation capacity after aPCC (FEIBA) infusion
Thrombin generation capacity from up to two escalating doses of aPCC will be measured using a thrombin generation assay at baseline and up to 30 minutes after FEIBA infusion.
Secondary outcomes
Number of serious adverse events
Number of serious adverse events will be recorded
Number of serious bleeding episodes
Number of serious bleeding episodes will be recorded
Number of episodes of thrombotic events including thrombotic microangiopathy (TMA)
Number of episodes of thrombotic events including thrombotic microangiopathy (TMA) will be recorded
Sponsors and contacts
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Emory University
Lead sponsor
Takeda Pharmaceuticals North America, Inc.
Collaborator