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CompletedNCT03356249NextGeneSiSUpdated May 18, 2022

Next-Generation Sequencing Diagnostics of Bacteremia in Sepsis

An observational study in Sepsis and Septic Shock, sponsored by University Hospital Heidelberg. Completed at 21 sites in Germany. Open to participants aged 18 Years to 99 Years. Per ClinicalTrials.gov, last updated 2022-05-18.

Sponsored by University Hospital Heidelberg · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
500
Ages
18 Years to 99 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 141 studies in Sepsis with a site in Germany — 20 open to participants now, 21 under way, none of them phase 3. Sepsis · Germany.

Enrollment
18th of 69
500 · median 137
Started
2019
with 6 others
Observational
70 of 141
12 open now
Registered
92nd of 141
by date

Among the 141 studies in Sepsis with a site in Germany, this one is the 18th largest by enrollment of the 69 observational ones, is one of 7 that started in 2019, is one of 70 observational ones, and was the 92nd registered.

By phase

141 studies; the count open now beside each. This study's row is marked.

Observationalthis study70 · 12 open
No phase23 · 3 open
Phase 319 · 0 open
Phase 215 · 4 open
Phase 46 · 0 open
Phase 2/34 · 0 open
Phase 13 · 1 open
Phase 1/21 · 0 open

By the year they started

First in 2001; this study’s year is marked. 7 started in 2019.

Size and results

Median enrollment 200 across the 69 interventional studies, 137 across the 69 observational. Of the 94 that completed or were terminated, 16 (17%) have results posted.

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Watch this landscapeDownload CSVWith an account: a weekly mail of what changed among 141 studies in Sepsis with a site in Germany, or all of them as a file.
02

Study summary

Sepsis remains a major challenge, even in modern intensive care medicine. The identification of the causative pathogen is crucial for an early optimization of the antimicrobial treatment regime in patients with sepsis. In this context, culture-based diagnostic procedures (e.g. blood cultures) represent the standard of care, although they are associated with relevant limitations. Therefore, culture independent methods (e.g. Next-Generation Sequencing (NGS)) seem to be an attractive alternative. By the identification of circulating cell-free DNA in the blood and the use of the quantitative sepsis indicating quantifier (SIQ) score, causing pathogens can be identified and potential contaminations can be excluded.

The goal of the presented study is therefore, to assess the diagnostic performance of a NGS-based approach for the detection of relevant infecting organisms in a big cohort of septic patients (n=500). Moreover, the plausibility of this NGS-based approach will be estimated by a panel of independent clinical specialists, retrospectively identifying potential changes in patients´ management based on NGS results.

Read the detailed description

Sepsis remains a major challenge, even in modern intensive care medicine. The identification of the causative pathogen is crucial for an early optimization of the antimicrobial treatment regime in patients with sepsis. In this context, culture-based diagnostic procedures (e.g., blood cultures) represent the standard of care, although they are associated with relevant limitations. Accordingly, culture-independent molecular diagnostic procedures might be of help for the identification of the causative pathogen in infected patients. Especially the concept of an unbiased sequence analysis of circulating cell-free DNA (cfDNA) from plasma samples of septic patients by next-generation sequencing (NGS) has recently been identified to be a promising diagnostic platform for critically ill patients suffering from bloodstream infections. Although this new approach might be more sensitive and specific than culture-based state-of-the-art technologies, additional clinical trials are needed to exactly define the performance as well as clinical value of a NGS-based approach.

Next GeneSiS is a prospective, observational, non-interventional, multicenter study to assess the diagnostic performance of a NGS-based approach for the detection of relevant infecting organisms in patients with suspected or proven sepsis (according to recent sepsis definitions [sepsis-3]) by the use of the quantitative sepsis indicating quantifier (SIQ) score in comparison to standard (culture-based) microbiological testings. Moreover, the clinical value of this NGS-based approach will be estimated by a panel of independent clinical specialists, retrospectively identifying potential changes in patients´ management based on NGS results. Further subgroup analyses will focus on the clinical value especially for patients suffering from a failure of empiric treatment within the first three days after onset (as assessed by (1.) death of the patient or lack of improvement of the patient´s clinical condition (in terms of an inadequate decrease of SOFA-score) or (2.) persistent high procalcitonin levels).

This prospective, observational, non-interventional, multicenter study trial for the first time investigates the performance as well as the clinical value of a NGS based approach for the detection of bacteremia in patients with sepsis and may therefore be a pivotal step toward the clinical use of NGS in this indication.

Two sets of blood cultures (2x aerobic / 2x anaerobic) will be collected at study inclusion (=Onset) as well as 72 hours afterwards (=72h). In parallel, plasma samples for NGS-based measurements need to be obtained as described previously. Further blood samples for NGS-based measurements can be collected whenever physicians order blood cultures (2x aerobic / 2x anaerobic) because of the clinical suspicion of a bloodstream infection (BSI) within the first 3 days after study inclusion. Results of microbiological routine diagnostics in specimens different from blood (e.g. body fluid, tissue, bronchoalveolar lavage, endotracheal aspirate) will be used for further analyses when they are obtained within a timeframe of ≤72 hours prior or after the timepoints for NGS-based measurements. Clinical data collection and (if possible) PCT measurements will be performed at Onset as well as at 72h after study inclusion. The final outcome evaluation of patients will be performed at 28 days.

03

Conditions studied

  • Sepsis
  • Septic Shock

Keywords

  • Sepsis
  • Septic shock
  • Next-Generation Sequencing
  • Bacteremia
04

Who can participate

Ages eligible
18 Years to 99 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Patients with sepsis or septic shock according to the new sepsis definitions (Sepsis-3) with an onset \<24h are eligible for study inclusion.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Age ≥18yr
  • Sepsis (with an onset ≤24h): Patients with a life-threatening organ dysfunction caused by a dysregulated host response to a suspected or proven infection. Organ dysfunction can be identified as an acute change in total SOFA score ≥2 points consequent to the infection. Patients can also be promptly identified at the bedside with qSOFA, ie, alteration in mental status, systolic blood pressure ≤100mmHg, or respiratory rate ≥22/min.
  • or Septic shock (with an onset ≤24h): Patients with septic shock can be identified with a clinical construct of sepsis with persisting hypotension requiring vasopressors to maintain mean arterial pressure (MAP) ≥65mmHg and having a serum lactate level >2mmol/L (18mg/dL) despite adequate volume resuscitation.

Exclusion criteria

Exclusion Criteria:

  • Age ≤18yr
  • Refusal to give consent
  • Patient will probably be discharged from the ICU within the first 72h following inclusion
  • Palliative treatment intent
  • Clinician is not committed to aggressive treatment
  • Death is deemed imminent and inevitable
  • Patients who had previously been included, but are readmitted to the ICU during the same hospitalization, will not be included a second time.
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
500 participants (actual)
Patient registry
No
Biospecimen retention
Samples with dna

Groups and cohorts

  • Sepsis Group

    Patients (n=500) with suspected or proven sepsis or septic shock (according to the Sepsis-3 definitions).

    Diagnostic Test: Next-Generation Sequencing

Interventions

  • Diagnostic testNext-Generation Sequencing

    In 500 patients with suspected or proven sepsis or septic shock (according to the Sepsis-3 definitions), patients´ characteristics and routine blood parameters will be determined at sepsis onset as well as 72 hours afterwards. At the same time points, 2 sets of blood cultures and one blood tube for Next-Generation Sequencing (NGS)-diagnostics will be collected. An evaluation of outcome will be performed at 28 days after sepsis onset.

06

What researchers measure

Primary outcomes

  1. Sensitivity [%] (of the NGS-based SIQ-score in comparison to blood culture diagnostics, as the goldstandard for the identification of the causative pathogen in sepsis)

    Proportion of positives that are correctly identified as such.

    Time frame: 2 years

  2. Specificity [%] (of the NGS-based SIQ-score in comparison to blood culture diagnostics, as the goldstandard for the identification of the causative pathogen in sepsis)

    Proportion of negatives that are correctly identified as such.

    Time frame: 2 years

  3. Positive predictive value [%] (of the NGS-based SIQ-score in comparison to blood culture diagnostics, as the goldstandard for the identification of the causative pathogen in sepsis)

    Proportion of positives that are true positive.

    Time frame: 2 years

  4. Negative predictive value [%] (of the NGS-based SIQ-score in comparison to blood culture diagnostics, as the goldstandard for the identification of the causative pathogen in sepsis)

    Proportion of negatives that are true negative.

    Time frame: 2 years

  5. Cohen's kappa coefficient [no measuring unit; 0</=k</=1] (of the NGS-based SIQ-score in comparison to blood culture diagnostics, as the goldstandard for the identification of the causative pathogen in sepsis)

    Measurement of the interobserver agreement between both items.

    Time frame: 2 years

Secondary outcomes

  1. Plausibility [%] (of the NGS-based SIQ-score)

    Using a majority rule, SIQ-score results will be evaluated for plausibility by a panel of three independent clinical specialists not associated with the study site. Therefore, the panel will be provided with clinical case summaries, NGS results and standard-of-care results from all samples tested. Results of microbiological routine diagnostics in specimens different from blood (e.g. body fluid, tissue, bronchoalveolar lavage, endotracheal aspirate) will be included when they have been obtained within a timeframe of ≤72 hours prior or after the timepoints for NGS-based measurements.

    Time frame: 2,5 years

  2. Changes in therapy [%] (that may have occurred if the NGS-based SIQ-score had been available for clinical use)

    Using a majority rule, the clinical value of the NGS-based approach will be estimated by a panel of three independent clinical specialists not associated with the study site, retrospectively identifying potential changes in patients´ management based on NGS results. Therefore, the panel will be provided with clinical case summaries, NGS results and standard-of-care results from all samples tested. Results of microbiological routine diagnostics in specimens different from blood (e.g. body fluid, tissue, bronchoalveolar lavage, endotracheal aspirate) will be included when they have been obtained within a timeframe of ≤72 hours prior or after the timepoints for NGS-based measurements. To identify potential changes in antimicrobial management that may have occurred if the results from the NGS technology had been available for clinical use, the panel will be provided with a special questionnaire.

    Time frame: 2,5 years

07

Study locations

21 sites
  • RWTH Aachen University
    Aachen, 52074, Germany
  • Klinikum Mittelbaden Baden-Baden Balg
    Baden-Baden, 76532, Germany
  • Charité - Universitätsmedizin Berlin
    Berlin, Germany
  • Evangelisches Krankenhaus Bethel gGmbH
    Bielefeld, 33617, Germany
  • University Hospital Bonn
    Bonn, Germany
  • Klinikum Bremerhaven Reinkenheide gGmbH
    Bremerhaven, 27574, Germany
  • Duesseldorf University Hospital
    Duesseldorf, 40225, Germany
  • University Hospital Essen
    Essen, 45147, Germany
  • University Hospital Frankfurt
    Frankfurt, 60590, Germany
  • University Medical Center Göttingen
    Göttingen, 37077, Germany
  • Medical School Hannover
    Hannover, 30625, Germany
  • University Hospital Heidelberg
    Heidelberg, 69120, Germany
  • Kliniken Landkreis Heidenheim gGmbH
    Heidenheim, Germany
  • University Hospital Köln
    Köln, Germany
  • University Hospital Leipzig
    Leipzig, Germany
  • Evangelisches Krankenhaus Luckau gGmbH
    Luckau, 15926, Germany
  • University Hospital rechts der Isar
    Munich, 81675, Germany
  • University Hospital of Regensburg
    Regensburg, 93053, Germany
  • University of Rostock
    Rostock, 18057, Germany
  • University Hospital Tübingen
    Tübingen, 72076, Germany
  • Ulm University Medical Center
    Ulm, 89081, Germany
08

References and documents

Publications

  • Decker SO, Sigl A, Grumaz C, Stevens P, Vainshtein Y, Zimmermann S, Weigand MA, Hofer S, Sohn K, Brenner T. Immune-Response Patterns and Next Generation Sequencing Diagnostics for the Detection of Mycoses in Patients with Septic Shock-Results of a Combined Clinical and Experimental Investigation. Int J Mol Sci. 2017 Aug 18;18(8):1796. doi: 10.3390/ijms18081796. PubMed 28820494 ↗
  • Grumaz S, Stevens P, Grumaz C, Decker SO, Weigand MA, Hofer S, Brenner T, von Haeseler A, Sohn K. Next-generation sequencing diagnostics of bacteremia in septic patients. Genome Med. 2016 Jul 1;8(1):73. doi: 10.1186/s13073-016-0326-8. PubMed 27368373 ↗
  • Brenner T, Decker SO, Grumaz S, Stevens P, Bruckner T, Schmoch T, Pletz MW, Bracht H, Hofer S, Marx G, Weigand MA, Sohn K; TIFOnet Critical Care Trials Group. Next-generation sequencing diagnostics of bacteremia in sepsis (Next GeneSiS-Trial): Study protocol of a prospective, observational, noninterventional, multicenter, clinical trial. Medicine (Baltimore). 2018 Feb;97(6):e9868. doi: 10.1097/MD.0000000000009868. PubMed 29419698 ↗

Individual participant data

Plan to share: No

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Mar 2019 to primary completion in Aug 2021, 29 months.

Of 491 non-industry observational studies under Sepsis, half reached primary completion within 29 months of starting (the median), counting those still running; a quarter within 13 and three quarters within 58. This study's 29 months is close to that.

Counting every sponsor, half of 543 studies reached it within 27 months; a quarter within 12 and three quarters within 56.

How these figures are worked out, and which studies are left out of them.

Registered
Nov 19, 2017
First posted
Nov 29, 2017
StartActual
Mar 1, 2019
Primary completionActual
Aug 31, 2021
CompletionActual
Sep 30, 2021
Last update
May 18, 2022
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on May 18, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03356249
Collaborators
Fraunhofer Institute for Interfacial Engineering and Biotechnology, Dietmar Hopp Stiftung GmbH
Responsible party
Thorsten Brenner, MD (Prof. Dr. med. Thorsten Brenner, MHBA, University Hospital, Essen) — Principal investigator
First posted
Nov 29, 2017
Start date
Mar 1, 2019
Primary completion
Aug 31, 2021
Completion
Sep 30, 2021
Last update
May 18, 2022

Study contacts

Thorsten Brenner, MD
principal investigator · University Hospital, Essen

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in May 2022. You cannot join it, but the record below documents what was studied.

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