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Updated: Jul 22, 2026

Next-generation Sequencing of 16S Ribosomal RNA Gene Amplicons
Published on: August 29, 2014
Comparison of the BioFire Joint Infection Panel to 16S Ribosomal RNA Gene-Based Targeted Metagenomic Sequencing for
Marisa A Azad1,2, Matthew J Wolf2, Angela P Strasburg2
1Division of Public Health, Infectious Diseases, and Occupational Medicine, Department of Medicine, Mayo Clinicgrid.66875.3a, Rochester, Minnesota, USA.
Abstract:
The diagnosis of periprosthetic joint infection (PJI) is challenging, often requiring multiple clinical specimens and diagnostic techniques, some with prolonged result turnaround times. Here, the diagnostic performance of the Investigational Use Only (IUO) BioFire Joint Infection (JI) Panel was compared to 16S rRNA gene-based targeted metagenomic sequencing (tMGS) applied to synovial fluid for PJI diagnosis. Sixty synovial fluid samples from knee arthroplasty failure archived at -80°C were tested. Infectious Diseases Society of America (IDSA) diagnostic criteria were used to classify PJI. For culture-positive PJI with pathogens targeted by the JI panel, JI panel sensitivity was 91% (21/23; 95% confidence interval [CI], 73 to 98%), and tMGS sensitivity was 96% (23/24; 95% CI, 80 to 99%) (P = 0.56). Overall sensitivities of the JI panel and tMGS for PJI diagnosis were 56% (24/43; 95% CI, 41 to 70%) and 93% (41/44; 95% CI, 82 to 98%), respectively (P < 0.001). JI panel and tMGS overall specificities were 100% (16/16; 95% CI, 81 to 100%) and 94% (15/16; 95% CI, 72 to 99%), respectively. While the clinical sensitivity of the JI panel was excellent for on-panel microorganisms, overall sensitivity for PJI diagnosis was low due to the absence of Staphylococcus epidermidis, a common causative pathogen of PJI, on the panel. A PJI diagnostic algorithm for the use of both molecular tests is proposed.
Insights
Diagnosing periprosthetic joint infection (PJI) is difficult. Targeted metagenomic sequencing (tMGS) showed higher overall sensitivity for PJI than the BioFire Joint Infection (JI) Panel, which missed common pathogens like Staphylococcus epidermidis.
Area of Science:
- Orthopedic Surgery
- Infectious Diseases
- Molecular Diagnostics
Background:
- Periprosthetic joint infection (PJI) diagnosis is challenging, often requiring multiple tests with long turnaround times.
- Current diagnostic methods for PJI can be time-consuming and may not always yield definitive results.
- The development of rapid and accurate diagnostic tools for PJI is crucial for effective patient management.
Purpose of the Study:
- To compare the diagnostic performance of the BioFire Joint Infection (JI) Panel against 16S rRNA gene-based targeted metagenomic sequencing (tMGS).
- To evaluate the utility of these molecular diagnostic techniques for identifying periprosthetic joint infection (PJI) in synovial fluid samples.
- To propose a diagnostic algorithm integrating both molecular tests for improved PJI detection.
Main Methods:
- Sixty synovial fluid samples from knee arthroplasty failure cases were analyzed.
- The BioFire JI Panel (Investigational Use Only) and tMGS were performed on archived samples.
- Infectious Diseases Society of America (IDSA) criteria were used to classify PJI cases.
Main Results:
- For culture-positive PJI with JI panel-targeted pathogens, sensitivities were 91% for the JI panel and 96% for tMGS.
- Overall PJI diagnostic sensitivities were significantly higher for tMGS (93%) compared to the JI panel (56%).
- Specificities were high for both: 100% for the JI panel and 94% for tMGS.
Conclusions:
- Targeted metagenomic sequencing (tMGS) demonstrates superior overall sensitivity for diagnosing periprosthetic joint infection (PJI) compared to the BioFire Joint Infection (JI) Panel.
- The JI panel's lower overall sensitivity is attributed to the exclusion of common PJI pathogens, such as Staphylococcus epidermidis.
- A combined diagnostic algorithm utilizing both tMGS and the JI panel may enhance PJI diagnosis accuracy.
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