Microbiological Diagnosis of Infectious Keratitis to Pathogenic Fastidious Germs (Keratite)

April 20, 2023 updated by: Assistance Publique Hopitaux De Marseille
Infectious keratitis are favored by the circumstances causing the small trauma of the corneal epithelium, corneal surgery, corneal dryness under health system such as Sjögren's syndrome rheumatoid arthritis, or much more frequently wearing contact lenses. If the majority of infectious keratitis are favourable, some lead to serious injury of the cornea, or even corneal perforation which result an endophthalmitis. This unfavourable evolution may lead to blindness due to corneal damage, the endo-ocular lesions or enucleation of the eyeball. This negative evolution is encountered while the infectious keratitis due to tedious germs of difficult diagnosis such as nontuberculous Mycobacterial, fungal infections, fungal keratitis, amoebic keratitis, and certain viral keratitis. The microbiological diagnosis of routine is based on the systematic search for pathogens tedious from invasive sampling of cornea by vaccinostyle. We set up a new non-invasive corneal swab diagnostic method.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Primary Purpose: Compare the ability diagnostic of non-invasive sampling swab corneal versus the gold standard, (invasive vaccinostyle uptake) for the systematic search for pathogens tedious in corneal specimens.

Hypothesis:

The diagnostic strategy using a microbial testing of cornea method has a sensitivity of 90% and a specificity of 80% or more over the policy diagnostic using a sampling by vaccinostyle method.

Primary outcome measures: Sensitivity, specificity, positive and negative predictive values, Diagnostic odds ratio.

Study Type

Interventional

Enrollment (Actual)

442

Phase

  • 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

  • France
      • Marseille, France, 13354
        • Assistance Publique Hopitaux de Marseille

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

Description

Inclusion Criteria:

  • Patient is more than 18 years old.
  • Patient with a prescription of a microbiologic diagnostic of keratitis
  • Patient who do not declined to have his medical records reviewed for research
  • Patient with health insurance

Exclusion Criteria:

  • minor patient (<18 years).
  • Pregnant or breastfeeding women.
  • Major Patient under guardianship.
  • Patient in vital emergency.
  • Private Patient liberty or under court order.
  • Patient refusing to sign the informed consent form

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: Diagnostic
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Other: Patient with a prescription of a microbiologic diagnostic of
Patient with a prescription of a microbiologic diagnostic of keratitis
Other: Blood sampling
Detection of bacteria will be performed on a blood sample

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Sensitivity, specificity, positive and negative predictive values, Diagnostic odds ratio.
Time Frame: 1 day
1 day

Collaborators and Investigators

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

Sponsor

Assistance Publique Hopitaux De Marseille

Investigators

  • Principal Investigator: Michel Drancourt, Pr, Assistance Publique - Hopitaux de Marseille

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 (Actual)

August 12, 2013

Primary Completion (Actual)

March 6, 2019

Study Completion (Actual)

October 26, 2022

Study Registration Dates

First Submitted

June 28, 2016

First Submitted That Met QC Criteria

June 28, 2016

First Posted (Estimate)

June 30, 2016

Study Record Updates

Last Update Posted (Actual)

April 21, 2023

Last Update Submitted That Met QC Criteria

April 20, 2023

Last Verified

April 1, 2023

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2012-40
  • 2012-A01568-35 (Other Identifier: ANSM)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

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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