- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04589611
Translating Metabolic Responses to Mechanical Insult Into Early Interventions to Prevent PTOA
Study Overview
Status
Conditions
Detailed Description
This is a small-scale proof-of concept clinical trial of amobarbital as a treatment to prevent post-traumatic osteoarthritis in fractured ankle joints. The study is a double blind, prospective, randomized, placebo-controlled, stepwise trial. Amobarbital will be delivered to ankle joints in solution with hyaluronic acid (HA) as a vehicle. Amobarbital/HA injections (active dose) will be compared to HA alone (placebo dose). Our primary goal is to confirm safety, but we will also assess whether treatment improves chondrocyte viability and decreases synovial inflammation. The intervention that will be utilized has proven to be effective using vitro and in vivo models. The study team will assess safety and begin to evaluate efficacy of amobarbital/Gel-One in patients having sustained tibial pilon fractures. The study team will use advanced imaging-based methods we have developed to characterize how joints subjected to varying levels of fracture severity and residual elevated contact stress respond in treated and control groups.
Phase I:6 subjects will be treated with a single dose open label, and safety measures will be assessed.
Phase II: Once initial safety is confirmed, 20 amobarbital:10 control subjects will be treated with the single dose at the initial operation.
Assuming continued safety, an additional 20 amobarbital:10 control subjects will be treated with two doses and evaluated. The second dose of 2.5 mM amobarbital will be administered during the second operation.
Subjects will participate in the following procedures:
SOC surgical intervention Randomization to Amobarbital/Gel-One arm or control arm X-rays CT scans Blood and urine Questionnaires
Study Type
Enrollment (Actual)
Phase
- Phase 2
- Phase 1
Contacts and Locations
Study Contact
- Name: Lawrence Marsh, MD
- Phone Number: (319) 356-0430
- Email: j-marsh@uiowa.edu
Study Contact Backup
- Name: James Martin, PhD
- Phone Number: (319) 335-7549
- Email: james-martin@uiowa.edu
Study Locations
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Iowa
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Iowa City, Iowa, United States, 52240
- University of Iowa
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Age 18-60 years
- Acute closed or type 1 open ankle fractures (classified as OTA/AO 43 B 1-3 and 43 C 1- 3 or classified as 42 B and C fractures with 25% talar displacement and one of the following; syndesmosis injury or medial malleolar fracture at or above the shoulder) (Marsh et al., 2007)) without operative ipsilateral extremity trauma
- Posterior malleolar and supination adduction rotational fractures that have an articular fracture line across the articular surface of the distal tibia. Posterior malleolar fractures should affect 25% of the articular surface or greater.
- Fractures must have initial treatment within 72 hours of injury including initial injection of amobarbital or placebo.
Exclusion Criteria:
- Diabetes
- Pregnant or nursing mothers and individuals with child-bearing potential that are not using birth control methods with >99% efficacy.
- Allergy to poultry products or cinnamon
- Previous injuries to the ankle
- High grade open wounds
- Pre-existing immunologic or hematologic diseases
- Pre-existing ankle arthritis
- Ipsilateral fractures
- Associated injuries that preclude standard rehabilitation
- Pre-existing dysfunction of the kidneys, liver, blood, immune system, endocrine system (excluding diabetes)
- Serum creatinine >/= 1.4 mg/dl; BUN > 30 mg/dl; ALT >/= 60 IU/L in males and >/= 50 IU/L in females; AST >/= 45 IU/L in males and > 40 IU/L in females; bilirubin > 1.3 mg/dL; platelets </= 50,000/ul; glucose > 200 mg/dL
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Sequential Assignment
- Masking: Triple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Phase I single amobarbital/Gel-One dose
Phase I: An open label study of 3 patients will be done.
If no dose limiting toxic (DLT) side effects occur, then an additional 3 patients will be done.
If no DLT events occur, the study will proceed to Phase II.
|
One dose of amobarbital/Gel-One during the initial surgical intervention
|
Active Comparator: Phase IIa Part 1 amobarbital/Gel-One dose
20 subjects will be randomized to amobarbital/Gel-One single dose.
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One dose of amobarbital/Gel-One during the initial surgical intervention
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Placebo Comparator: Phase IIa Part 1 Placebo
10 subjects will be randomized to amobarbital/Gel-One single dose.
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One dose of placebo during the initial surgical intervention
|
Active Comparator: Phase IIa Part 2 amobarbital/Gel-One dose
20 subjects will be randomized to one dose of amobarbital/Gel-One during the initial surgical intervention.
A second dose will be administered during the second surgical intervention.
|
One dose of amobarbital/Gel-One during the initial surgical intervention.
A second dose will be administered during the second surgical intervention.
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Placebo Comparator: Phase IIa Part 2 placebo
20 subjects will be randomized to one dose of placebo during the initial surgical intervention.
A second dose will be administered during the second surgical intervention.
|
One dose of placebo during the initial surgical intervention.
A second dose will be administered during the second surgical intervention.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Determine the number of participants with systemic adverse events including the change in laboratory values to assess the systemic safety of amobarbital.
Time Frame: Pre-op baseline on the day before external fixation surgery (within 24 hours of injury), immediately post-op, and at 1, 2, and 4 days post-op. At the time of internal fixation (3-21 days after external fixation) and at 1, 2, and 4 days post-op.]
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By using CBC and standard clinical chemistry assays to quantify circulating, ALT, AST, Bilirubin, Creatinine, and BUN and the measurement of urine protein content, the number of participants that have abnormal laboratory values will be determined.
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Pre-op baseline on the day before external fixation surgery (within 24 hours of injury), immediately post-op, and at 1, 2, and 4 days post-op. At the time of internal fixation (3-21 days after external fixation) and at 1, 2, and 4 days post-op.]
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Determine the number of participants with a change of local toxicity in tissues.
Time Frame: Pre-op baseline on the day before external fixation surgery (within 24 hours of injury), immediately post-op, and at 1, 2, and 4 days post-op. At the time of internal fixation (3-21 days after external fixation) and at 1, 2, and 4 days post-op.
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By using osteochondral fragments obtained during the internal fixation surgery, local toxicity will be determined by examining the tissue for cartilage and synovial histological changes.
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Pre-op baseline on the day before external fixation surgery (within 24 hours of injury), immediately post-op, and at 1, 2, and 4 days post-op. At the time of internal fixation (3-21 days after external fixation) and at 1, 2, and 4 days post-op.
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Patient Reported Outcome Measurement Information Systems (PROMIS) - Pain Interference
Time Frame: 3, 6, 12, and 24 months
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Description: Pain interference 6 questions 5 pt scale - the higher the score the greater the pain
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3, 6, 12, and 24 months
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Patient Reported Outcome Measurement Information Systems (PROMIS) Physical Function
Time Frame: Global Health - T-score - mean of 50 and a standard deviation (SD) of 10. Therefore a person with a T-score of 40 is one SD below the mean. Higher is better.
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Physical Function - T-score - mean of 50 and a standard deviation (SD) of 10.
Therefore a person with a T-score of 40 is one SD below the mean.
Higher is better.
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Global Health - T-score - mean of 50 and a standard deviation (SD) of 10. Therefore a person with a T-score of 40 is one SD below the mean. Higher is better.
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Patient Reported Outcome Measurement Information Systems (PROMIS) Global Health questionnaires.
Time Frame: 3, 6, 12, and 24 months
|
Global Health - T-score - mean of 50 and a standard deviation (SD) of 10.
Therefore a person with a T-score of 40 is one SD below the mean.
Higher is better.
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3, 6, 12, and 24 months
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American Orthopaedic Foot and Ankle Society (AOFAS) Score.
Time Frame: 3, 6, 12, and 24 months
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0-100 point scale with 100 perfect ankle function
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3, 6, 12, and 24 months
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Foot and Ankle Disability Index (FADI).
Time Frame: 3, 6, 12, and 24 months
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Description: total 104 points scored in a percentage scale with 100% perfect
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3, 6, 12, and 24 months
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X-Ray based Kellgren-Lawrence Grade
Time Frame: 3, 6, 12, and 24 months
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Radiograph imaging graded on scale 1 (no arthritis)-4 (severe arthritis)
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3, 6, 12, and 24 months
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CT-based fracture energy
Time Frame: 6 months
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Fracture energy is measured in Joules.
It is from CT data and measured computationally.
It is a continuous measure - Higher Joules = more energy = worse fracture
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6 months
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CT-based Contact Stress
Time Frame: 6 months
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Vertical CT scan of ankle are segmented and analyzed using finite element analysis.
Results are expressed as Contract Stress Exposure (MPa) across areas.
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6 months
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CT-based Joint Space Width
Time Frame: 6 months
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Vertical CT scan of ankle used to measure Joint Space Width at several locations to measure distance to calculate the mean tibiotalar joint space (mm).
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6 months
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Collaborators and Investigators
Sponsor
Collaborators
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Joint Diseases
- Musculoskeletal Diseases
- Rheumatic Diseases
- Arthritis
- Osteoarthritis
- Physiological Effects of Drugs
- Neurotransmitter Agents
- Molecular Mechanisms of Pharmacological Action
- Central Nervous System Depressants
- Immunologic Factors
- Protective Agents
- Hypnotics and Sedatives
- GABA Modulators
- GABA Agents
- Adjuvants, Immunologic
- Viscosupplements
- Hyaluronic Acid
- Amobarbital
Other Study ID Numbers
- 201911366
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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.
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