A Study of Fitusiran (ALN-AT3SC) in Severe Hemophilia A and B Patients With Inhibitors (ATLAS-INH)
Hemophilia A, Hemophilia B
About this trial
This is an interventional treatment trial for Hemophilia A focused on measuring RNAi therapeutic, Hemophilia A, Hemophilia B, Hemophilia A, Severe, Hemophilia B, Severe, Blood Coagulation Disorders, Inherited, Blood Coagulation Disorders, Hematologic Diseases, Coagulation Protein Disorders, Hemorrhagic Disorders, Genetic Diseases, Inborn, Genetic Diseases, X-Linked, Factor VIII, Factor IX, Inhibitor, Bypassing agents, Coagulants, Fitusiran
Eligibility Criteria
Inclusion Criteria:
- Males, greater than or equal to (>=) 12 years of age.
Severe hemophilia A or B with inhibitors.
- (Severity confirmed by a central laboratory where coagulation factor VIII (FVIII) level was less than (<)1% or factor IX (FIX) level was less than or equal to [<=]2% at Screening; Inhibitors defined as inhibitor titer of >=0.6 Bethesda units per milliliter [BU/mL] or as evidenced by medical records).
- A minimum of 6 bleeding episodes requiring BPA treatment within the last 6 months prior to screening.
- Willing and able to comply with the study requirements and to provide written informed consent and assent.
Exclusion Criteria:
- Known co-existing bleeding disorders other than hemophilia A or B.
- Antithrombin (AT) activity <60% at Screening.
- Co-existing thrombophilic disorder.
- Clinically significant liver disease.
- Active hepatitis C virus infection.
- HIV positive with a cluster of differentiation-4 count of <200 cells/microliter.
- History of arterial or venous thromboembolism.
- Inadequate renal function.
- History of multiple drug allergies or history of allergic reaction to an oligonucleotide or N-Acetylgalactosamine.
- History of intolerance to SC injection(s).
- Any other conditions or comorbidities that would make the participant unsuitable for enrollment or could interfere with participation in or completion of the study, per Investigator judgement.
Sites / Locations
- Investigational Site Number 0117
- Investigational Site Number 0139
- Investigational Site Number 0135
- Investigational Site Number 0137
- Investigational Site Number 0128
- Investigational Site Number 0115
- Investigational Site Number 0105
- Investigational Site Number 0103
- Investigational Site Number 0119
- Investigational Site Number 0136
- Investigational Site Number 0111
- Investigational Site Number 0104
- Investigational Site Number 6101
- Investigational Site Number 6104
- Investigational Site Number 1102
- Investigational Site Number 8604
- Investigational Site Number 8602
- Investigational Site Number 8605
- Investigational Site Number 8603
- Investigational Site Number 8601
- Investigational Site Number 3303
- Investigational Site Number 3301
- Investigational Site Number 4905
- Investigational Site Number 4906
- Investigational Site Number 9102
- Investigational Site Number 9108
- Investigational Site Number 9104
- Investigational Site Number 9106
- Investigational Site Number 9103
- Investigational Site Number 9111
- Investigational Site Number 9105
- Investigational Site Number 3901
- Investigational Site Number 3904
- Investigational Site Number 8110
- Investigational Site Number 8103
- Investigational Site Number 8202
- Investigational Site Number 8203
- Investigational Site Number 8204
- Investigational Site Number 6003
- Investigational Site Number 6004
- Investigational Site Number 2701
- Investigational Site Number 2703
- Investigational Site Number 2702
- Investigational Site Number 3402
- Investigational Site Number 8803
- Investigational Site Number 8801
- Investigational Site Number 8804
- Investigational Site Number 8805
- Investigational Site Number 9002
- Investigational Site Number 9004
- Investigational Site Number 9001
- Investigational Site Number 9005
- Investigational Site Number 9003
- Investigational Site Number 9006
- Investigational Site Number 8003
- Investigational Site Number 8001
- Investigational Site Number 8002
- Investigational Site Number 4407
Arms of the Study
Arm 1
Arm 2
Active Comparator
Experimental
Bypassing Agents (BPA) On-demand
Fitusiran 80 mg Prophylaxis
Participants received On-demand BPAs (use of these agents, as needed, for episodic bleeding episodes, and not on a regular regimen intended to prevent spontaneous bleeding) per Investigator discretion from Day 1 for treatment of breakthrough bleeding episodes, up to a total of 9 months.
Participants received Fitusiran 80 mg subcutaneously (SC) as prophylaxis once monthly from Day 1, along with the on-demand BPAs (per investigator's discretion and within bleeding dosing guidelines) for treatment of breakthrough bleeding episodes, up to a total of 9 months.