Clinical Study to Evaluate the Role of Microdialysis for the Comparison of Topical Products

December 12, 2012 updated by: University of Florida

Use of Dermal Microdialysis to Evaluate the Effect of Skin Properties and Application Site on the Topical Bioequivalence of Diclofenac: The Main Study

The investigators hypothesize that a technique called microdialysis can be used to measure the amount of the drug diclofenac which penetrates (enters) the fatty tissue under the skin. Microdialysis uses a small device called a 'probe' to determine the amount of drug which enters a body tissue. The small device is placed directly in the fatty tissue and samples are taken at specific times. The investigators will determine whether site of application affects the availability of the drug.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
6

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Early Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Florida
      • Gainesville, Florida, United States, 32610
        • University of Florida

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 55 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Males or females, between 18 and 55 years of age.
  • Body mass index of 18.5 and 32 kg/m2, inclusive.
  • Non-smoker (not smoked for 12 months prior to screening).
  • Healthy on the basis of physical examination, medical history, and vital signs.
  • Healthy on the basis of clinical laboratory tests performed at screening. If the results of the serum chemistry panel (including liver enzymes, other specific tests) and hematology are outside the normal reference ranges, the subject may be included only if the study physician judges the abnormalities or deviations from normal to be not clinically significant.
  • Female subjects must be postmenopausal (for at least 6 months), surgically sterile, or abstinent; or, if of childbearing potential and sexually active, be practicing an effective method of birth control (e.g., prescription oral contraceptives, contraceptive injections, intrauterine device, double-barrier method, contraceptive patch) before entry and throughout the study. Also, subjects must have a negative serum human chorionic gonadotropin pregnancy test at the initial screening.
  • Agree not to consume any alcohol 72 hours prior to application of the study patch and until discharge from the unit.
  • Agree not to use diclofenac-containing medications while enrolled in the study.
  • Willing to adhere to the prohibitions and restrictions specified in this protocol.
  • Subjects must have signed an informed consent document indicating that they understand the purpose of and procedures required for the study and are willing to participate in the study.
  • Subjects should be willing to shower using the same soap/cleansers between the screening visit and the end of the study, namely the Oil of Olay Moisturizing Bar Soaps with Shea Butter.
  • Subjects should be willing avoid the use of body oils, creams, lotions, or powders to the test areas for a period of 48 hours before the application of patches.

Exclusion Criteria:

  • Clinically significant abnormal values for hematology or chemistry at screening.
  • History of current significant medical illness including (but not limited to) cardiovascular thrombotic events, myocardial infarction, stroke or other cardiac disease, hypertension, peptic ulcer disease or gastrointestinal bleeding, skin disorders, hematological disease, bronchospastic respiratory disease, asthma, diabetes mellitus, renal or hepatic insufficiency, or any other illness that the investigator considers should exclude the subject.
  • History of atopic eczema, dry skin or ichthyosis.
  • Excessive hair at the site of application that could possibly affect drug absorption; scar tissue, open tissue(s), tattoo or coloration that would interfere with the test sites, their assessments, and their reaction to drug, or that may compromised the safety of the subjects.
  • Known allergies or hypersensitivity to Flector® Patch or diclofenac-containing products.
  • Clinically significant abnormal physical examination and/or vital signs (e.g. systolic blood pressure >140 mmHg, diastolic blood pressure >90 mmHg, heart rate >100 bpm and <45 bpm).
  • Received an investigational drug (including vaccines) within 60 days prior to study drug administration or are currently enrolled in an investigational study.
  • Pregnant or breast-feeding.
  • Recent history of surgery; within the past 3 months prior to screening.
  • Clinically significant acute illness within 7 days prior to study drug administration.
  • Donation of 1 or more units (approximately 450 mL) of blood or acute loss of an equivalent amount of blood within 60 days prior to study drug administration.
  • Any condition that, in the opinion of the investigator, would compromise the well-being of the subject or the study or prevent the subject from meeting or performing study requirements.
  • Employees of the investigator or study center, with direct involvement in the proposed study or other studies under the direction of that investigator or study center, as well as family members of the employees or the investigator.
  • Over-the-counter or prescription use of other non-steroidal anti-inflammatory drug products.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Basic Science
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Reference, Patch location thigh, batch 1
Reference, Patch location thigh, batch 1: A single dose of the patch will be applied. In addition, the Microdialysis probe consisting of three probes will be inserted to test for the amount of the drug diclofenace. This will determine whether the site of application affects the availability of the drug.
Drug: Reference, Patch location thigh, batch 1
Reference, Patch location thigh, batch 1
Other Names:
  • Flector patch
Experimental: Test, Patch location thigh, batch 2
Test, Patch location thigh, batch 2: A single dose of the patch will be applied. In addition, the Microdialysis probe consisting of three probes will be inserted to test for the amount of the drug diclofenace. This will determine whether the site of application affects the availability of the drug.
Device: Test, Patch location thigh, batch 2
Test, Patch location thigh, batch 2. Three probes will be inserted at each visit.
Other Names:
  • Microdialysis probe
Experimental: Reference, Patch location abdomen, batch 1
Reference, Patch location abdomen, batch 1: A single dose of the patch will be applied. In addition, the Microdialysis probe consisting of three probes will be inserted to test for the amount of the drug diclofenace. This will determine whether the site of application affects the availability of the drug.
Drug: Reference, Patch location abdomen, batch 1
Reference, Patch location abdomen, batch 1
Other Names:
  • Flector Patch
Experimental: Test, Patch location abdomen, batch 2
Test, Patch location abdomen, batch 2: A single dose of the patch will be applied. In addition, the Microdialysis probe consisting of three probes will be inserted to test for the amount of the drug diclofenace. This will determine whether the site of application affects the availability of the drug.
Device: Test, Patch location abdomen, batch 2
Test, Patch location abdomen, batch 2. Three probes will be inserted at each visit.
Other Names:
  • Microdialysis probe

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Blood and tissue diclofenac concentrations
Time Frame: 24 hours per visit
Blood and tissue concentrations (nanograms/milliliter) of the drug diclofenac will be measured and compared between different batches of the product Flector. In addition, the two batches will be compared at different application sites, namely the abdomen and thigh. Tissue concentrations will be measured using microdialysis.
24 hours per visit

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University of Florida

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Food and Drug Administration (FDA)

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Hartmut Derendorf, PhD, University of Florida

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
April 1, 2012

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
November 1, 2012

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
November 1, 2012

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
April 30, 2012

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 2, 2012

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
May 4, 2012

Study Record Updates

Last Update Posted (Estimate)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
December 13, 2012

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 12, 2012

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2012

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 10-223-00277-01

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.

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