Asymptomatic Colonization With S. Aureus After Therapy With Linezolid or Clindamycin for Acute Skin Infections

October 25, 2019 updated by: University of Chicago

Asymptomatic Colonization With S. Aureus After Therapy With Linezolid or Clindamycin for Acute S. Aureus Skin and Skin Structure Infections in Patients With Comorbid Conditions: A Randomized Trial

In this pilot study, the objective is to determine the prevalence of asymptomatic carriage of S. aureus in patients with ABSSSIs and minor cutaneous abscesses after therapy with either linezolid or clindamycin at 40 days after the completion of therapy. Secondarily, the investigators will assess the efficacy of linezolid vs. clindamycin in the empiric therapy of ABSSSIs and minor cutaneous abscesses, as well as the genotypic spectrum of S. aureus isolates causing ABSSSIs or minor cutaneous abscesses and colonization in the target patient population before and after therapy. Given the results of a recent study on linezolid and vancomycin and the investigator's own experience, it is hypothesized that persistent MRSA carriage will be less common after therapy with linezolid for ABSSSIs and minor cutaneous abscesses than it is with oral clindamycin.

Study Overview

Status

Status

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

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.
25

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.
  • Not Applicable

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
    • Georgia
      • Atlanta, Georgia, United States, 30303
        • Grady Memorial Hospital
    • Illinois
      • Chicago, Illinois, United States, 60637
        • University Of Chicago Medical Center

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 and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • having an ABSSSI or a minor cutaneous abscess treated in the ED
  • age 18 years or older

  • any one or more of the following co-morbidities:

    • diagnosis of diabetes mellitus
    • obesity with a BMI >35
    • chronic kidney disease
    • coronary artery disease
    • peripheral vascular disease

Exclusion Criteria:

  • known history of or current thrombocytopenia
  • Currently taking anti-depression medication
  • Current or recent hospitalization
  • Known current alcohol or drug abuse
  • Known or suspected hypersensitivity to any ingredient of the study drugs
  • Irregular heart rate and blood pressure measurements
  • Fevers or low body temperature
  • Known psychiatric condition
  • Superficial skin infection
  • Skin infection caused from an animal bite
  • Recent treatment with antibacterials
  • Pregnancy

Other protocol related inclusion/exclusion criteria may apply.

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: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel 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.
Active Comparator: linezolid
Biological: Linezolid
Linezolid 600 mg every 12 hours for 7 days
Active Comparator: Clindamycin
Biological: Clindamycin
Clindamycin 300 mg po every 6 hours for 7 days

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
Number of Participants With Presence of Staphylococcus Aureus After Treatment With Linezolid Versus Clindamycin
Time Frame: 40 days after completion of treatment
Asymptomatic carriage of Staphylococcus aureus at the 40-day visit will be compared in the patients assigned to receive linezolid to the patients assigned to receive clindamycin.
40 days after completion of treatment

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Number of Participants With Clinical Response of Skin Infections to Treatment -- 7 Days
Time Frame: 7 days after completion of treatment
The efficacy of linezolid versus clindamycin in the treatment of skin infections will be measured using treatment outcomes of cure, treatment failure, or relapse.
7 days after completion of treatment
Number of Participants With Clinical Response of Skin Infections to Treatment -- 40 Days
Time Frame: 40 days after completion of treatment
The efficacy of linezolid versus clindamycin in the treatment of skin infections will be measured using treatment outcomes of cure, treatment failure, or relapse.
40 days after completion of treatment
The Type of of Staphylococcus Aureus Present at the Diagnosis Will be Compared to the Type of Staphylococcus Aureus Present After Treatment
Time Frame: 40 days after completion of treatment
The genotype of Staphylococcus aureus which is found to be the cause of the skin infection will be be compared to the genotype of Staphylococcus aureus present after treatment. Comparisons will will be made between the linezolid and clindamycin treatment groups.
40 days after completion of treatment

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 Chicago

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.
Pfizer

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: Michael Z David, MD, PhD, University of Chicago

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.
January 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.
December 1, 2016

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.
December 1, 2016

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).
June 12, 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.
June 12, 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.
June 14, 2012

Study Record Updates

Last Update Posted (Actual)

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.
November 8, 2019

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.
October 25, 2019

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.
October 1, 2019

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.
  • 11-0550

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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