NCT05183906

Evaluation of Next-Generation Sequencing-based Metabarcoding Versus Culturing for Microbiological Assessment in Infectious Keratitis

Evaluation of Next-Generation Sequencing-based Metabarcoding Versus Culturing in Infectious Keratitis

• Status: Unknown
• Phase: —
• Study type: Observational
• Enrollment: 100 (estimated)
• Sponsor: Aarhus University Hospital · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

Infectious keratitis is a potential sight threatening condition. In conventional clinical practice culturing is performed in order to identify the causative microbial organism; however in recent years Next Generation Sequencing for the presence of ribosomal DNA from bacteria, fungi, or amoeba has become available. The present study aims to compare conventional culturing with Next Generation Sequencing for identifying microorganism causing keratitis.

Detailed description

Patients admitted with microbial keratitis to the department of ophthalmology at Aarhus University Hospital is evaluated with both conventional culturing at agar plates, broth culture, and Next Generation Sequencing for ribosomal DNA. Only patients with a corneal infiltrate of a minimum of 2 mm or of 1 mm within the central 6 mm of the cornea will be included in the study. Sampling includes two samples from the contralateral healthy eye to control for the patient's normal microbiome, evaluated with culturing in broth and with NGS. From the infiltrate, samples include culturing on Sabouraud agar, chocolate agar, and blood agar, culturing in broth medium, and samples for NGS. A total of 100 patients will be included.

Conditions

• Keratitis

Interventions

Type	Name	Description
DIAGNOSTIC_TEST	Next generation sequencing	Evaluation of microbiological culturing versus next generation sequencing for ribosomal DNA

Timeline

• Start date: 2021-12-09
• Primary completion: 2024-06-01
• Completion: 2024-06-01
• First posted: 2022-01-11
• Last updated: 2024-02-02

Locations

1 site across 1 country: Denmark