Safety Study of Alphanate in Previously Treated Patients With Severe Hemophilia A
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Purpose
The purpose of this study is to determine the immunologic and overall safety associated with long-term use of Alphanate in subjects diagnosed with severe hemophilia A (Factor VIII:C less than 0.01 IU/ml), who have been previously treated with plasma-derived Factor VIII products other than Alphanate and who have no history of developing either antibody inhibitors to Factor VIII or nonspecific inhibitors of coagulation.
| Condition | Intervention | Phase |
|---|---|---|
|
Severe Hemophilia A |
Drug: Alphanate SD/HT |
Phase 4 |
| Study Type: | Interventional |
| Study Design: | Endpoint Classification: Safety Study Intervention Model: Single Group Assignment Masking: Open Label Primary Purpose: Treatment |
| Official Title: | Phase IV A Study of Immunologic Safety for Alphanate in Previously Treated Patients Diagnosed With Severe Hemophilia A |
- Incidence of Factor VIII Inhibitor Development [ Time Frame: 24 months ] [ Designated as safety issue: Yes ]
- Adverse events [ Time Frame: 24 months ] [ Designated as safety issue: Yes ]
- Changes in biochemical parameters indicating renal or hepatic impairment [ Time Frame: 24 months ] [ Designated as safety issue: Yes ]
- Seroconversion to HIV/1, HIV/2, HAV, HBV, HCV or parvovirus B19 in subjects seronegative for these viruses at the time of enrollment [ Time Frame: 24 months ] [ Designated as safety issue: Yes ]
- Amount of product used per year as part of at-home prophylaxis and therapy for bleeding episodes [ Time Frame: 24 months ] [ Designated as safety issue: Yes ]
- Physician's qualitative assessment of hemostasis [ Time Frame: 24 months ] [ Designated as safety issue: Yes ]
| Estimated Enrollment: | 60 |
| Study Start Date: | January 2003 |
| Estimated Study Completion Date: | March 2019 |
| Estimated Primary Completion Date: | December 2018 (Final data collection date for primary outcome measure) |
| Arms | Assigned Interventions |
|---|---|
| Experimental: Alphanate SD/HT |
Drug: Alphanate SD/HT
Plasma-derived preparation of Factor VIII
Other Name: Anti-hemophilic (human) coagulation factor VIII
|
Detailed Description:
This is a Phase IV, non-randomized, multicenter study of at least 50 evaluable subjects diagnosed with severe hemophilia A. Enrolled subjects will be treated at home and with in-clinic therapy exclusively with Alphanate as their sole source of Factor VIII concentrate for prophylaxis and treatment of all bleeding episodes and surgical procedures. Subjects will be treated for at least 2 years and a minimum of 50 exposure days, or if 50 exposure days are not reached, for a maximum of 30 months and in accordance with the subject's usual pre-study treatment regimen. Subjects will continue treatment as above or until they develop inhibitors to Factor VIII at a titer greater than or equal to 5 Bethesda units (BU/ml); Factor VIII becomes ineffective at providing hemostasis, or the subject exhibits severe or serious adverse events that prevent completion of the study.
Eligibility| Ages Eligible for Study: | 6 Years to 65 Years |
| Genders Eligible for Study: | Male |
| Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Male
- At least 6 years of age and not more than 65 years of age.
- Signed and dated Informed Consent Form and Patient Authorization for Release of Information approved by the appropriate Institutional Review Board (IRB) prior to screening and enrollment. If the subject is a minor (i.e., less than 18 years of age) both he and his parent or legal guardian must sign and date the informed consent.
- Diagnosis of severe hemophilia A
- Levels of Factor VIII less than 0.01 IU/mL.
- Treatment with cryoprecipitate, Factor VIII concentrates, and/or whole blood, for at least 150 cumulative exposure days (CEDs) prior to enrollment.
- No treatment with cryoprecipitate, Factor VIII concentrate, or any other blood product, for at least 72 hours prior to screening.
- No previous diagnosis with inhibitors to Factor VIII at any detectable titer.
- Subjects must never have been diagnosed with nonspecific inhibitors of coagulation.
- Negative test for the presence of Factor VIII inhibitors at screening and enrollment.
- CD4 counts greater than or equal to 400 cells/µL.
- Vaccination against hepatitis A and hepatitis B, or evidence of antibodies against hepatitis A and hepatitis B. (A subject who has no prior immunity against hepatitis A will be offered a course of vaccination for hepatitis A.)
- Karnofsky Performance Score of at least 50.
Exclusion Criteria:
- Any immunosuppressive medications including intravenous immunoglobulins at the time of enrollment.
- Clinical signs or symptoms of an infection, such as fever, chills or nausea during screening or enrollment.
- History of frequent reactions to Factor VIII concentrates (e.g., chills or headaches).
- Prior treatment with Alphanate® (Solvent-Detergent/ Heat-Treated).
- Immunocompromised (including HIV+ status or has an impaired immune system due to disease or treatment).
Contacts and Locations| Contact: Paul J Pinciaro, PhD | 410-814-7617 | paul.pinciaro@grifols.com |
| United States, Oklahoma | |
| University of Oklahoma Children's Hospital | Recruiting |
| Oklahoma City, Oklahoma, United States, 73126 | |
| United States, Texas | |
| Gulf States Hemophilia and Thrombophilia Center | Recruiting |
| Houston, Texas, United States, 77030 | |
| Poland | |
| Oddzial Chorob Wewnetrznych i Hematologii | Active, not recruiting |
| Poznan, Szkolna, Poland | |
| Katedra i Klinika Hematologii Collegium Medicum UJ | Recruiting |
| Krakow, Poland | |
| Study Director: | Paul J Pinciaro, PhD | Grifols Biologicals Inc. |
More Information
No publications provided
| Responsible Party: | Grifols Biologicals Inc. |
| ClinicalTrials.gov Identifier: | NCT00323856 History of Changes |
| Other Study ID Numbers: | GBI 04-01 |
| Study First Received: | May 8, 2006 |
| Last Updated: | March 18, 2013 |
| Health Authority: | United States: Food and Drug Administration |
Keywords provided by Grifols Biologicals Inc.:
|
Hemophilia A Plasma-derived treatment Factor VIII Inhibitor |
Additional relevant MeSH terms:
|
Hemophilia A Blood Coagulation Disorders, Inherited Blood Coagulation Disorders Hematologic Diseases Coagulation Protein Disorders Hemorrhagic Disorders |
Genetic Diseases, Inborn Factor VIII Coagulants Hematologic Agents Therapeutic Uses Pharmacologic Actions |
ClinicalTrials.gov processed this record on June 13, 2013