- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04026945
Sustained Release Lidocaine for Treatment of Scrotal Pain
A Dose-Escalating Phase I Study of a Single Injection of Lidocaine Paste (ST-CP) for Spermatic Cord Block in Men With Chronic Scrotal Content Pain
Study Overview
Detailed Description
The purpose of this study is to find out if a new polymeric, water-free formulation of lidocaine is safe and can provide effective, long-lasting pain relief in chronic scrotal pain (CSCP) patients. This new formulation ST-CP is injected into the spermatic cord of patients in a very comparable way that the currently available lidocaine solution (Lidocaine HCl 1% USP) is administered. The only difference is that the polymer solution stays in the area of injection longer by forming a soft implant.
The investigators therefore hypothesize that the polymer formulation of lidocaine will release the drug over an extended period of time and will not dissolve away like the currently used lidocaine solution (Lidocaine HCl 1%, USP). This will lead to long-lasting pain relief for CSCP patients.
The investigators' primary objective is to determine if the single injection of our polymeric lidocaine formulation is well tolerated by patients with CSCP. Secondary objectives are to determine the duration and extent of pain relief, the impact of ST-CP on pain-related quality of life and the systemic exposure to lidocaine.
The clinical study is conducted at the Vancouver Prostate Centre. Potential participants will undergo a screening period to determine basal pain levels over 7 days and test their ability to respond to a spermatic cord block with a standard lidocaine injection (Lidocaine HCl 1%, USP). Up to 15 men will receive our ST-CP study formulation and will be monitored over the the following 4 weeks. Follow-up procedures will include blood draws, daily pain evaluations and standard questionnaires on scrotal pain and erectile function. Up to 3 dose levels are planned but dose escalation will only occur once the previous cohort (3 patients) has completed the follow up and safety assessment.
Summary descriptive statistics (including mean and standard deviation, median, range, proportion) will be provided for important parameters and outcome measures. These include subject demographics, subject disposition, subject compliance, pharmakokinetic laboratory test outcomes, overall adverse events, adverse events related to lidocaine and adverse events related to study procedure. Pain scores and questionnaires will be summarized by score and pre- and post- treatment levels will be compared.
Study Type
Enrollment (Actual)
Phase
- Phase 2
- Phase 1
Contacts and Locations
Study Locations
-
-
British Columbia
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Vancouver, British Columbia, Canada, V5Z 1M9
- Department of Urologic Sciences, Gordon & Leslie Diamond Health Care Centre
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Adult ( ≥ 19 years) male
- Unilateral scrotal pain lasting >3 months
- Average daily maximum scrotal pain score over 7 days ≥ 5 on the 0-10 NRS (see study protocol attached in 9.1.)
- Positive response to test spermatic cord block with 1% Lidocaine (Lidocaine HCl 1%, USP), defined as a temporary decrease of at least two points on the NRS (see study protocol attached in 9.1.) within an hour of injection
Exclusion Criteria:
- Negative response to test spermatic cord block, defined as absence of a temporary decrease of at least two points on the NRS (see study protocol attached in 9.1.) within an hour of injection
- Other pain generator site with NRS ≥ 5
- History of allergic reaction to lidocaine or any other component of ST-CP Lidocaine
- Known hypersensitivity to anesthetics of the amide-type.
- Complete heart block.
- Use of anticoagulants (Aspirin permitted)
- Active infection involving the urinary tract or scrotum
- Inability to give consent
- Inability to follow up according to the protocol
- Negative response to previous spermatic cord block.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Other: Active Treatment (ST-CP) Group
This study uses a dose-escalating approach in the active treatment arm. There is no comparator product. All qualifying patients receive the active treatment ST-CP as an injection in the region around the spermatic cord. The following dosing cohorts will be used: I: 1 x 2 mL of 140 mg/mL ST-CP (= 280 mg lidocaine) II: 1 x 3 mL of 140 mg/mL ST-CP (= 420 mg lidocaine) III: 1 x 4 mL of 140 mg/mL ST-CP (= 560 mg lidocaine) |
Sustained-release lidocaine injection
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Adverse Events
Time Frame: 28 days
|
Determination of safety and tolerability of the study treatment ST-CP through the assessment of adverse events
|
28 days
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
NRS Pain Score
Time Frame: 28 days
|
Determination of daily maximum pain score over 14 and 28 days
|
28 days
|
Validated Chronic Epididymitis Symptom Index (CESI)
Time Frame: 28 days
|
Determination of the pain associated quality of life
|
28 days
|
Validated International Index of Erectile Function (IIEF-5)
Time Frame: 28 days
|
Determination of erectile function associated quality of life
|
28 days
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Ryan Flannigan, MD, University of British Columbia
- Principal Investigator: Ryan Paterson, MD, University of British Columbia
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
Keywords
Additional Relevant MeSH Terms
- Pain
- Neurologic Manifestations
- Chronic Pain
- Physiological Effects of Drugs
- Molecular Mechanisms of Pharmacological Action
- Anti-Arrhythmia Agents
- Central Nervous System Depressants
- Peripheral Nervous System Agents
- Sensory System Agents
- Anesthetics
- Membrane Transport Modulators
- Anesthetics, Local
- Voltage-Gated Sodium Channel Blockers
- Sodium Channel Blockers
- Lidocaine
Other Study ID Numbers
- H19-00438
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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