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Sponsored by: |
Targeted Genetics Corporation |
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Information provided by: | Targeted Genetics Corporation |
ClinicalTrials.gov Identifier: | NCT00617032 |
Study 1304 is a Phase I dose escalation study conducted in adults with persistent moderate (grade 2) or severe (grade 3) swelling due to inflammatory arthritis (rheumatoid arthritis, psoriatic arthritis, or ankylosing spondylitis) in at least one peripheral joint eligible for injection. Disease must not be severe enough to warrant use of a TNF-alpha antagonist in the next three months.
Current use of TNF-alpha antagonists is not permitted. Subjects with rheumatoid arthritis must have had an adequate trial of at least one disease-modifying antirheumatic drug (DMARD) prior to screening.
The primary objective is to evaluate the safety of intra-articular administration of tgAAC94.
Condition | Intervention | Phase |
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Rheumatoid Arthritis |
Genetic: tgAAC94 gene therapy vector Genetic: tgAAC94 placebo |
Phase I |
Study Type: | Interventional |
Study Design: | Treatment, Randomized, Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Placebo Control, Parallel Assignment, Safety Study |
Official Title: | A Phase 1 Dose Escalation Study of Intra-Articular Administration of tgAAC94, a Recombinant Adeno-Associated Vector Containing the TNFR:Fc Fusion Gene, in Inflammatory Arthritis |
Enrollment: | 15 |
Study Start Date: | February 2004 |
Study Completion Date: | November 2005 |
Primary Completion Date: | November 2005 (Final data collection date for primary outcome measure) |
Arms | Assigned Interventions |
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1: Active Comparator
1x10^10 DRP/mL tgAAC94
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Genetic: tgAAC94 gene therapy vector
Single Dose 1x10^10 DNase resistant particles (DRP) / mL joint volume
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2: Active Comparator
1x10^11 DRP/mL tgAAC94
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Genetic: tgAAC94 gene therapy vector
Single dose 1x10^11 DNase resistant particles (DRP) / mL joint volume
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3: Placebo Comparator
Single dose tgAAC94 placebo
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Genetic: tgAAC94 placebo
Single dose
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tgAAC94 is a recombinant adeno-associated virus serotype 2 (AAV2) vector genetically engineered to contain the cDNA for a human tumor necrosis factor receptor (TNFR)-immunoglobulin (IgG1) Fc fusion (TNFR:Fc) gene. The DNA sequence of TNFR:Fc in tgAAC94 codes for a protein sequence identical to etanercept (Enbrel). TNF-alpha has been strongly implicated as a major participant in the inflammatory cascade that leads to joint damage and destruction in diseases such as rheumatoid arthritis (RA), psoriatic arthritis (PsA) and ankylosing spondylitis (AS).
Intra-articular delivery of the TNFR:Fc gene (tgAAC94) should result in expression of the secreted protein in the joint space and provide local high concentrations of soluble TNFR:Fc for an extended period of time without requiring frequent administration. Thus, this proposed therapy would be useful in those inflammatory arthritis patients who have a persistently problematic joint despite the use of systemic TNF-alpha blockade or who have a limited number of arthritic joints.
Extensive preclinical studies using rAAV2 containing several different transgenes in a variety of animal models have shown efficient and persistent gene transfer and expression with minimal toxicity. The parent virus (wild-type AAV2) is a naturally occurring, non-replicating virus that depends on a helper virus, such as adenovirus, for replication. The recombinant AAV2 vector is unable to replicate in target host cells because it lacks the AAV genes, whose protein products are also required in trans, for replication and packaging of progeny virus. Extensive epidemiological studies have found AAV2 to be non-pathogenic.
Although there is no cure for inflammatory arthritis, treatment has been revolutionized by the advent of anti-TNF-alpha therapies. These include etanercept (Enbrel), infliximab (Remicade) and adalimumab (Humira), which consist of soluble TNF receptors, chimeric human-mouse anti-TNF-alpha monoclonal antibodies and fully human anti-TNF-alpha monoclonal antibodies, respectively. Clinical studies have shown these products to improve the signs and symptoms, inhibit the structural damage, and impact functional outcomes in patients with inflammatory arthritis.
Ages Eligible for Study: | 18 Years and older |
Genders Eligible for Study: | Both |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
Exclusion Criteria:
United States, California | |
UCLA Division of Rheumatology | |
Los Angeles, California, United States | |
United States, Colorado | |
Denver Arthritis Research Center | |
Denver, Colorado, United States | |
United States, Washington | |
Swedish Rheumoatology Research | |
Seattle, Washington, United States | |
Canada, British Columbia | |
Arthritis Research Centre of Canada | |
Vancouver, British Columbia, Canada | |
Canada, Manitoba | |
Arthritis Centre Clinical Research Unit UofManitoba | |
Winnipeg, Manitoba, Canada | |
Canada, Ontario | |
Mt Sinai Hospital | |
Toronto, Ontario, Canada | |
Toronto Western Hospital | |
Toronto, Ontario, Canada |
Study Director: | Alison Heald, MD | Targeted Genetics Corporation |
Responsible Party: | Targeted Genetics Corporation ( Rae Saltzstein, Senior Director Quality and Regulatory Affairs ) |
Study ID Numbers: | 13E04, RAC Protocol # 0307-588, HPB 0088676 |
Study First Received: | February 5, 2008 |
Last Updated: | February 5, 2008 |
ClinicalTrials.gov Identifier: | NCT00617032 |
Health Authority: | United States: Food and Drug Administration; Canada: Health Canada |
Autoimmune Diseases Musculoskeletal Diseases Joint Diseases Arthritis |
Connective Tissue Diseases Arthritis, Rheumatoid Rheumatic Diseases |
Immune System Diseases |