- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00515710
LTFU for Gene Transfer Subjects With Hemophilia B
A Long-Term Follow-Up Study in Subjects With Sever Hemophilia B Who Received Adeno-Associated Viral Vectors Expressing Human Factor IX
Study Overview
Status
Conditions
Detailed Description
A prior clinical gene transfer study of intrahepatic adeno-associated virus (AAV) vector administration of the factor IX gene (AAV2-hFIX16) to adult subjects with severe hemophilia B enrolled several subjects from 2001 through 2004. These subjects received various doses of AAV2-hFIX16 manufactured by Avigen, Inc. (Alameda, CA). They were monitored up to at least one year following vector administration for evaluation of adverse events and for indices of efficacy. At the time study enrollment was suspended by Avigen, Inc., and IND 9398 under which the study was conducted was transferred to The Children's Hospital of Philadelphia (May 2005), there were no guidelines for long-term follow-up of the trial subjects. However, in an unrelated study conducted in France, of pediatric subjects administered integrating retrovirus vectors for X-linked severe combined immune deficiency (X-SCID), several leukemias developed years after transfer of the γc common chain gene. The underlying mechanism was attributed to proviral integration near, and upregulation of, proto-oncogenes such as LMO-2, coupled with robust expression of the γc common chain, inducing unregulated cellular proliferation. In response to these events, and in concert with the NIH and gene transfer scientific community, the U.S. Food and Drug Administration (US FDA) issued guidelines for the 'long-term follow-up of gene transfer subjects'. Since AAV vectors have a low rate of genomic integration, the risks of integration are low, but the long-term effect of the persistence of vector particles in humans is unknown. The investigators plan to enroll available subjects from the prior intrahepatic AAV gene transfer study to this observational study to follow them for up to 15 years after gene transfer.
An additional subject received AAV2-hFIX16 vector, manufactured by CCMT at CHOP, via hepatic artery infusion in January 2009. The study AAV2-hFIX-002, an amendment to the prior Avigen, Inc. clinical protocol modified to include transient immunomodulation, was conducted under IND 9398. This subject was monitored for three years following vector administration under clinical study AAV2-hFIX-002; amendment one of the current protocol transfers his annual long-term follow-up visits to AAV2-hFIX16-LTFU-01.
Spark Therapeutics will be the study sponsor; prior vector administration sites or referral/follow up sites will participate as study sites. The long-term follow-up (LTFU) study will consist primarily of endpoints including annual history, physical examination, blood tests, urinalysis, and periodic liver ultrasound. Adverse event reporting will focus on the development of oncologic, hematologic, neurologic and auto-immune events following gene transfer as specified in the November 2006 FDA Center for Biologics Evaluation and Research (CBER) guidance document entitled, "Gene Therapy Clinical Trials - Observing Subjects for Delayed Adverse Events."1 The LTFU study seeks to provide longitudinal information, and should adverse events occur, more timely discovery and treatment.
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
-
-
Pennsylvania
-
Philadelphia, Pennsylvania, United States, 19104
- Children's Hospital of Philadelphia
-
Pittsburgh, Pennsylvania, United States, 15213
- Hemophilia Center of Western Pennsylvania
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria
-Adult subjects who participated in prior intrahepatic AAV2-hFIX16 gene transfer studies
Exclusion Criteria
- Subjects who will not consent for study
- Subjects who the investigators believe are not capable of performing endpoints of the study
Study Plan
How is the study designed?
Design Details
- Observational Models: Case-Only
- Time Perspectives: Prospective
Cohorts and Interventions
Group / Cohort |
---|
1
Prior gene therapy study subjects receiving AAV2-hFIX16.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Safety and tolerability of intra-hepatic administration of AAV2-hFIX. Toxicity related to the administration of AAV2-hFIX will be evaluated locally and systemically.
Time Frame: Long-term follow-up up to 15 years
|
Annual study visits will be comprised of history, physical examination, blood tests and urinalysis and may include hepatic ultrasound tests; additional medical information may be needed to determine the relationship of adverse events to the investigational gene therapy vector AAV2-hFIX16.
|
Long-term follow-up up to 15 years
|
Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Study Director: Clinical Director, Spark Therapeutics
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- AAV2-hFIX16-LTFU-01
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Hemophilia B
-
Catalyst BiosciencesCompletedHemophilia A | Hemophilia B | Hemophilia A With Inhibitor | Hemophilia B With Inhibitor | Hemophilia A Without Inhibitor | Hemophilia B Without InhibitorBulgaria, Russian Federation
-
BayerCompletedHemophilia A; Hemophilia BIsrael
-
American Thrombosis and Hemostasis NetworkTakeda; CSL Behring; OctapharmaCompletedHemophilia A | Hemophilia B | Hemophilia | Hemophilia A With Inhibitor | Haemophilia | Hemophilia B With Inhibitor | Haemophilia A Without Inhibitor | Haemophilia B Without InhibitorUnited States
-
American Thrombosis and Hemostasis NetworkGenentech, Inc.Active, not recruitingHemophilia A With Inhibitor | Hemophilia B With Inhibitor | Haemophilia A Without Inhibitor | Haemophilia B Without InhibitorUnited States
-
Laboratoire français de Fractionnement et de BiotechnologiesLFB USA, Inc.CompletedA Phase III Study on the Safety, Pharmacokinetics and Efficacy of Coagulation Factor VIIa (PERSEPT2)Hemophilia A With Inhibitors | Hemophilia B With InhibitorsBulgaria, Ukraine, Czechia, United States, Georgia, South Africa
-
University College, LondonRecruiting
-
University of British ColumbiaBiogenCompletedHemophilia A, Congenital | Hemophilia B, CongenitalCanada
-
Suzhou Alphamab Co., Ltd.RecruitingHemophilia A With Inhibitor | Hemophilia B With InhibitorChina
-
AryoGen Pharmed Co.CompletedHemophilia A With Inhibitor | Hemophilia B With InhibitorIran, Islamic Republic of
-
Chia Tai Tianqing Pharmaceutical Group Co., Ltd.UnknownHemophilia A With Inhibitor | Hemophilia B With InhibitorChina