The Foot in Your Nose Study: Links Between Nasal Staphylococcus Aureus Colonies and Diabetic Foot Lesion Infections

November 14, 2025 updated by: Centre Hospitalier Universitaire de Nīmes
The presence of S aureus in the nasal passages of diabetic patients may be a risk factor for diabetic foot lesion infections. Our aim is to compare the genetic profiles of S aureus strains found in the noses and on the foot lesions of diabetic patients. The investigators are also studying the virulence of these strains, the prevalance of S aureus at either site, and whether or not the quantity of S aureus found in the nose affects the risk for infection in foot lesions. The investigators also use this study to test the sensitivity and specificity of the GeneXpert system.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Actual)

278

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

  • France
      • Le Grau-du-Roi, France, 30240
        • CHU de Nîmes - Hôpital Universitaire de Réadaptation du Grau du Roi
      • Marseille, France, 13915
        • APHM - Hôpital Nord
      • Montpellier, France, 34295
        • CHU de Montpellier - Hôpital Lapeyronie
    • Gard
      • Nîmes, Gard, France, 30029
        • CHU de Nîmes - Hopital Universitaire Caremeau

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

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Adult type 1 or 2 diabetic patients with grade 2-4 foot or ankle ulcers (first event or recurrence)

Description

Inclusion Criteria:

  • Type 1 or 2 diabetic patients
  • Patients consulting or hospitalized in the Diabetology departments of one of the participating centers
  • Grade 2-4 ulcer on the foot or ankle (both primo and recurrent events are acceptable)

Exclusion Criteria:

  • Patient refuses to participate
  • Pregnant, parturient or breastfeeding women
  • Patient does not have diabetic foot or arteritic
  • Diabetic ulcer is located elsewhere than the foot or ankle
  • The ulcer is non-swabbable
  • Patient does not have social-security coverage
  • Patient is under any type of guardianship

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

  • Observational Models: Cohort
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
All patients
Biological: Genetic profiling of bacterial cultures
Genetic profiling of bacterial cultures harvested from both the nose and foot lesions of patients

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Presence/absence of the same S. aureus genetic profile in the nose and on the foot lesion.
Time Frame: 3 hours
Presence/absence of the same S. aureus genetic profile in the nose and on the foot lesion. Genetic profiles do not change with time. This is a transversal, pinpoint measure.
3 hours

Collaborators and Investigators

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

Sponsor

Centre Hospitalier Universitaire de Nīmes

Collaborators

Institut National de la Santé Et de la Recherche Médicale, France

Investigators

  • Principal Investigator: Jean-Philippe Lavigne, MD PhD, Centre Hospitalier Universitaire de Nîmes

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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

September 1, 2010

Primary Completion (Actual)

March 19, 2012

Study Completion (Actual)

March 19, 2012

Study Registration Dates

First Submitted

September 29, 2010

First Submitted That Met QC Criteria

September 29, 2010

First Posted (Estimated)

September 30, 2010

Study Record Updates

Last Update Posted (Estimated)

November 17, 2025

Last Update Submitted That Met QC Criteria

November 14, 2025

Last Verified

March 1, 2015

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • PHRC-I/2009/JPL-02
  • 2009-A00849-48 (Other Identifier: Afssaps, RCB number)

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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