E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Severe Hemophilia A (FVIII <1%) |
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E.1.1.1 | Medical condition in easily understood language |
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E.1.1.2 | Therapeutic area | Diseases [C] - Blood and lymphatic diseases [C15] |
MedDRA Classification |
E.1.3 | Condition being studied is a rare disease | Yes |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
The primary objective of this study is to assess the efficacy of ADYNOVATE for prophylactic treatment in previously treated Chinese subjects with severe hemophilia A based on the total ABR. |
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E.2.2 | Secondary objectives of the trial |
- To assess the efficacy of ADYNOVATE for prophylactic treatment based on ABR by bleeding site and cause - To assess the overall hemostatic efficacy rating of ADYNOVATE for treatment of nonsurgical breakthrough bleeding episodes during the study period - To assess the efficacy of ADYNOVATE for perioperative bleeding management if minor surgery is performed during the study period - To evaluate the safety of ADYNOVATE as assessed by AEs and serious AEs (SAEs) as well as clinically significant findings in vital signs and clinical laboratory parameters - To evaluate the safety and the immunogenicity of ADYNOVATE based on the incidence of FVIII inhibitory antibodies and binding antibodies to ADYNOVATE - To evaluate the PK of ADYNOVATE in Chinese subjects |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. Subject and/or legally authorized representative must voluntarily sign a written informed consent form (ICF) after all relevant aspects of the study have been explained and discussed with the subject. For the subjects <18 years old, subjects will give assent AND their parents/legally authorized representative should sign the ICF accordingly. 2. Subject and/or legally authorized representative understands and is willing and able to comply with all requirements of the study protocol. 3. Subject should be ethnic Chinese. 4. Subject is 12 to 65 years of age at screening and male. 5. Subject has severe hemophilia A (FVIII clotting activity <1%) as confirmed by the central laboratory at screening after a washout period of at least 72 to 96 hours. 6. The last on-demand or prophylactic treatment received is within 3 months before screening. 7. Subject has documented previous treatment with plasma-derived FVIII concentrates or recombinant FVIII for >150 EDs. 8. Subject is human immunodeficiency virus (HIV)-negative, or HIV-positive with stable disease and CD4+ count ≥200 cells/mm3. 9. Subject is hepatitis C virus (HCV) negative by antibody testing (if positive, additional polymerase chain reaction testing will be performed to confirm), as confirmed at screening; or HCV-positive with chronic stable hepatitis, as assessed by the investigator. |
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E.4 | Principal exclusion criteria |
1. Subject has detectable FVIII inhibitory antibodies (≥0.6 Bethesda units (BU)/mL using the Nijmegen modification of the Bethesda assay) as confirmed by the central laboratory at screening. 2. Subject has a confirmed history of FVIII inhibitory antibodies (≥0.6 BU using the Nijmegen modification of the Bethesda assay or ≥0.6 BU using the Bethesda assay) at any time prior to screening. 3. Subject has a known hypersensitivity to ADYNOVATE or ADVATE or any of the components of the study drugs, such as mouse or hamster proteins, or other FVIII products. 4. Subject has been diagnosed with an inherited or acquired hemostatic defect other than hemophilia A (eg, qualitative platelet defect or von Willebrand’s disease). 5. Subject has severe hepatic dysfunction (eg, ≥5 times the upper limit of normal [ULN] for alanine aminotransferase (ALT) or aspartate aminotransferase (AST), a recent or persistent international normalized ratio [INR] >1.5, as confirmed by the local laboratory at screening). 6. Subject has severe renal impairment (serum creatinine >1.5 times the ULN) as confirmed by the local laboratory at screening. 7. Subject is planned or likely to undergo major surgery during the study period. 8. Subject has current or recent (<30 days) use of other PEGylated drugs before study participation or scheduled use of such drugs during study participation. 9. Subject has received emicizumab therapy within 6 months of screening. 10. Subject is currently receiving, or scheduled to receive during the study, an immunomodulating drug (eg, systemic corticosteroid agent at a dose equivalent to hydrocortisone >10 mg/day, or α-interferon) other than antiretroviral chemotherapy. 11. Subject has participated in another clinical study involving the use of an IP other than ADYNOVATE or an investigational device within 30 days before the screening visit or is scheduled to participate in another clinical study involving an IP or investigational device during this study. 12. Subject has a medical, psychiatric, or cognitive illness or recreational drug/alcohol use that, in the opinion of the investigator, would affect subject safety or compliance. 13. Subject, in the opinion of the investigator, is unable or unwilling to comply with the study protocol. |
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E.5 End points |
E.5.1 | Primary end point(s) |
Total Annualized Bleeding Rates (ABR) |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
Baseline up to a minimum of 50 exposure days(EDs) to ADYNOVATE or approximately 26 weeks (+2 weeks), whichever occurs last |
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E.5.2 | Secondary end point(s) |
- ABR Based on Bleeding Site and Cause - Number of Adynovate Infusions per Week During the Prophylactic Treatment Period - Number of Adynovate Infusions per Month During the Prophylactic Treatment Period - Weight-adjusted Consumption of Adynovate per Week During the Prophylactic Treatment Period - Weight-adjusted Consumption of Adynovate per Month During the Prophylactic Treatment Period - Percentage of Participants With Zero Bleeding Episodes During the Study - Time Intervals Between Bleeding Episodes - Overall Hemostatic Efficacy Rating at Bleed Resolution for Treatment of Breakthrough Bleeding Episodes - Number of Adynovate Infusions per Bleeding Episode - Weight-adjusted Consumption of Adynovate per Bleeding Episode - Number of Minor Surgeries With Hemostatic Efficacy Response Based on Global Hemostatic Efficacy Assessment (GHEA) Score as Assessed by the Operating Surgeon/Investigator - Volume of Actual and Predicted Intra-operative and Post-operative Blood Loss After the Surgery as Assessed by the Operating Surgeon/Investigator - Number of Participants who Require Perioperative Transfusion of Blood, Red blood Cells, Platelets, and Other Blood Products - Daily Intra-Operative and Post-Operative Weight-Adjusted Consumption Dose of Adynovate - Number of Participants With Treatment-emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs) - Number of Participants With Confirmed Inhibitory Antibodies to Factor VIII (FVIII), Binding Antibodies to Adynovate and Chinese Hamster Ovary (CHO) Protein - FVIII Activity Level in Plasma Assessed by a 1-stage Clotting Assay - Incremental Recovery Over Time During Adynovate Prophylactic Treatment - Pre-dose Level of FVIII Activity and Antigen and von Willebrand Factor (VWF) Antigen in Plasma - Clearance (CL) for FVIII Activity Following an Initial Single Dose and Steady-state Dose of Adynovate - Volume of Distribution (V) for FVIII Activity Following an Initial Single Dose and Steady-state Dose of Adynovate - Area Under the Concentration Versus Time Curve From 0 to 96 Hours (AUC0-96) for FVIII Activity Following an Initial Single Dose and Steady-state Dose of Adynovate - Maximum Concentration (Cmax) for FVIII Activity Following an Initial Single Dose and Steady-state Dose of Adynovate - Pre-dose Concentration (Cpredose) for FVIII Activity Following an Initial Single Dose and Steady-state Dose of Adynovate - Terminal Phase Elimination Half-life (T1/2) for FVIII Activity Following an Initial Single Dose and Steady-state Dose of Adynovate |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
Baseline up to a minimum of 50 exposure days(EDs) to ADYNOVATE or approximately 26 weeks (+2 weeks), whichever occurs last PK endpoints: Baseline and Week 20 |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Yes |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | No |
E.8.1.1 | Randomised | No |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 1 |
E.8.3 |
Will this trial be conducted at a single site globally?
| No |
E.8.4 | Will this trial be conducted at multiple sites globally? | Yes |
E.8.6 Trial involving sites outside the EEA |
E.8.6.2 | Trial being conducted completely outside of the EEA | Yes |
E.8.6.3 | Specify the countries outside of the EEA in which trial sites are planned |
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E.8.7 | Trial has a data monitoring committee | No |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.2 | In all countries concerned by the trial years | 1 |
E.8.9.2 | In all countries concerned by the trial months | 6 |