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Brief Title † | The Use of Anti-CD4 Monoclonal Antibody (mAb)-Fragment for the Imaging of Chronic Inflammation in Patients With Active Rheumatoid Arthritis | ||||
Official Title † | The Use of Anti-CD4 mAb-Fragment for the Imaging of Chronic Inflammation in Patients With Active Rheumatoid Arthritis (an Open Proof of Concept Study) | ||||
Brief Summary | Rheumatoid arthritis (RA) is a disease with a large economic impact due to the long lasting disabling nature of the disease. Furthermore, diagnosis of the disease is difficult and only a scheme with different symptoms is used to diagnose rheumatoid arthritis, often only by probability. Due to the fact that effective disease modifying pharmacological treatment is available and should be started early in established cases of RA, in combination with the adverse effect potential of these substances (e.g. methotrexate), a fast reliable diagnostic tool to diagnose rheumatoid arthritis would be highly appreciated by the medical community and the patients. Furthermore, for invasive treatments (surgery, puncture), an imaging method to display the activity pattern in different joints would be a major advantage. For the evaluation of the effectiveness of pharmacological therapy in rheumatoid arthritis, up to now, radiological measurements of the destruction process of the joints are used. This method has the disadvantage that it is time consuming insofar as changes in the radiological images must occur. It allows only an evaluation if the joints are destructed (which should be excluded by the new therapy regimen). Again, a quantifiable method for the determination of the effects of new therapeutic approaches would be highly appreciated. |
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Detailed Description | The substance will be used as iv injection due to the protein nature of the antibody and, to ensure a fast distribution within the body. The study will be performed as an open clinical trial due to the fact that the applied radiation has to be documented; the use of "placebo" radiation would be unethical. It is expected, that the new antibody fragment with its radioactive linkage will display an image of the activity distribution of the disease. Due to the fact that only patients with active disease have to be imaged and, to allow for comparison of the activity and the clinical distribution of the disease, this proof of concept study (phase I study) will be performed in patients with active disease. Healthy volunteers could not display an activity pattern of the disease. Furthermore, it seems to be unethical to use volunteers for studies with radioactivity with such a risk/benefit ratio (radiation risks vs. missing chance of display of tissue distribution) in a proof of concept study. |
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Study Phase | Phase I, Phase II | ||||
Study Type † | Interventional | ||||
Study Design † | Diagnostic, Non-Randomized, Open Label, Uncontrolled, Single Group Assignment, Safety Study | ||||
Primary Outcome Measure † | safety and tolerability of this diagnostic agent [ Time Frame: duration of study ] [ Designated as safety issue: Yes ] | ||||
Secondary Outcome Measure † | endpoint for the proof of concept will be the number of patients needed to obtain a series of equal results [ Time Frame: duration of study ] [ Designated as safety issue: Yes ] | ||||
Condition † | Rheumatoid Arthritis Polyarthritis Rheumatism Autoimmune Disease Inflammation |
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Intervention † | Radiation: Fab-fragment of Anti-human CD4 | ||||
MEDLINE PMIDs | |||||
Links | Related Info  Related Info  Related Info  |
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Recruitment Information Fields | |||||
Recruitment Status † | Completed | ||||
Enrollment † | 5 | ||||
Start Date † | July 2007 | ||||
Completion Date | May 2008 | ||||
Primary Completion Date | May 2008 (final data collection date for primary outcome measure) | ||||
Eligibility Criteria † | Inclusion Criteria:
Exclusion Criteria:
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Gender | Both | ||||
Ages | 50 Years to 80 Years | ||||
Accepts Healthy Volunteers | No | ||||
Contacts †† | |||||
Location Countries † | Germany | ||||
Administrative Information Fields | |||||
NCT ID † | NCT00372177 | ||||
Organization ID | Biotectid POC EP 1645 | ||||
Secondary IDs †† | EP 1645 | ||||
Study Sponsor † | Biotectid GmbH | ||||
Collaborators †† | Dresden University of Technology University of Leipzig |
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Investigators † |
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Information Provided By | Biotectid GmbH | ||||
Verification Date | May 2008 | ||||
First Received Date † | September 5, 2006 | ||||
Last Updated Date | May 26, 2008 |