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CompletedNCT01355042DYNAMICSUpdated Sep 20, 2017

Studies of Blood DNA in Patients With Severe Infection DYNAMICS

An observational study in Sepsis, Shock and Trauma, sponsored by Alison Fox-Robichaud. Completed at 6 sites in Canada. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2017-09-20.

Sponsored by Alison Fox-Robichaud · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
792
Ages
18 Years and older
Sex
All
01

Where this study stands

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

Among 86 studies in Sepsis with a site in Canada — 19 open to participants now, 21 under way, 2 of them phase 3. Sepsis · Canada.

Enrollment
8th of 25
792 · median 330
Started
2010
with 2 others
Observational
25 of 86
7 open now
Registered
26th of 86
by date

Among the 86 studies in Sepsis with a site in Canada, this one is the 8th largest by enrollment of the 25 observational ones, is one of 3 that started in 2010, is one of 25 observational ones, and was the 26th registered.

By phase

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

Observationalthis study25 · 7 open
Phase 317 · 2 open
Phase 215 · 4 open
No phase14 · 2 open
Phase 47 · 3 open
Phase 14 · 1 open
Phase 2/34 · 0 open

By the year they started

First in 2000; this study’s year is marked. 3 started in 2010.

Size and results

Median enrollment 300 across the 60 interventional studies, 330 across the 25 observational. Of the 53 that completed or were terminated, 11 (21%) have results posted.

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02

Study summary

Severe sepsis (ie. life-threatening infections) is triggered by harmful microorganisms or their toxins in the blood or tissues. These harmful agents damage the lining of blood vessels which can lead to inflammation, blood clot formation, and vessel obstruction. In Canada, there are approximately 90,000 patients with severe sepsis each year. Of these, 30% to 50% will die. The identification of highly reliable outcome predictors in severe sepsis patients is important for several reasons including: to help describe the severity of sepsis, to classify patients for enrollment in clinical studies, and to monitor a patient's response to treatment and procedures. In the investigators lab, the investigators examined the incremental usefulness of adding multiple biomarkers to clinical scoring systems for predicting ICU mortality in patients with severe sepsis. In a preliminary study of 80 patients with sepsis, the investigators found that high levels of plasma DNA predicted ICU death better than any other clinical or biological factor. In this grant, the investigators propose to confirm these findings in an external group of 400 patients in a blinded fashion. The investigators also plan to study how plasma DNA levels change over time and whether high plasma DNA levels can be used to distinguish sepsis from other critically ill conditions. For this the investigators will compare the investigators septic patients to a cohort of 600 patients in the ICU with other conditions. The investigators believe this research has the potential to significantly improve the management and treatment of septic patients.

Read the detailed description

DYNAMICS STUDY (DNA as prognostic marker in ICU patients)

Principal Investigator: Patricia Liaw, PhD (McMaster University) Coinvestigator: Alison Fox-Robichaud, MD (McMaster University) Funding source: CIHR, 2010-2015 Budget: $794,086

One-page Protocol summary This is a new 5-year CIHR funded multi-centre prospective observational study. The overall objective is to gain insight into the pathophysiology of plasma DNA (ie. cell-free DNA) in severe sepsis patients and in other critically ill patients. In our pilot study of 80 severe sepsis patients, we found that plasma DNA had extremely high prognostic utility in this patient population. Using Receiver Operating Characteristic (ROC) curves in a multivariate logistic model, we demonstrated that the Area Under the Curve (AUC) for plasma DNA is 0.96 (95% CI 0.93-1.00). Furthermore, plasma DNA levels obtained at "day 1" (ie. within 24 hours of meeting the inclusion criteria for severe sepsis) did not differ significantly from the levels measured in subsequent days. In other words, plasma DNA levels in nonsurvivors were high at "day 1" and remained high; plasma DNA levels in survivors were low at "day 1" and remained low. These finding suggests that at study inclusion for severe sepsis, the nonsurvivor patients had already reached "a point of no return" (with the standard of care available at the time the patients in the pilot study were recruited).

We plan to validate the prognostic utility of plasma DNA prospectively in an independent cohort of severe sepsis patients (n=400). We will also study a broad cohort of non-septic ICU patients (n=600) to determine if elevations in plasma DNA are specific to severe sepsis, or if it is more generally associated with high mortality risk. These non-septic ICU patients include the following: multiple trauma, shock on presentation, neurosurgery, aneurysm, intracranial hemorrhage, burns). The overall research coordinator for this study is Ellen McDonald. Participating centres include Hamilton (Patricia Liaw, Alison Fox-Robichaud, Deborah Cook), Ottawa (Laurlyn McIntyre), London (Claudio Martin, Doug Fraser), Vancouver (Peter Dodek), Toronto (John Marshall, Jennifer Tsang), Laval Quebec (Francois Lallouche), and Calgary (Brent Winston).

Clinical data will be collected daily during the first week, then once a week thereafter for the duration of the patients' stay in the ICU. Blood sample will also be collected on the same schedule except that weekend blood samples will be skipped. Freezerworks Unlimited will be used for barcoding and tracking of all plasma samples. All samples will be shipped to Hamilton for biomarker analyses. Clinical data will be managed with the iDataFax software with statistical support from Janice Pogue at the Population Health and Research Institute (Hamilton). The primary outcome is ICU mortality. The secondary outcomes are (a) the temporal relationships between plasma DNA levels and other markers of inflammation and blood clotting, and (b) the temporal relationships between plasma DNA levels and clinical parameters (e.g. SOFA and MODS scores, interventions, use of blood products and plasma expanders).

This study was approved by the Research Ethics Board at the Hamilton Health Sciences in November 2010. Deferred consent has been approved. Although we are not performing any DNA sequencing analyses on the patient samples (ie. we are simply quantifying how much DNA is in the plasma), we are also collecting Paxgene DNA tubes in the event that future as-yet-undetermined studies require DNA for gene sequencing studies. Our local Ethics Board has approved a separate Genetic Consent form to request and extra blood samples for Paxgene DNA tubes. As of May 2012 we have completed recruitment in the sepsis arm. We are starting to close some sites to enrolment as we near study completion

03

Conditions studied

  • Sepsis
  • Shock
  • Trauma
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

Patients admitted to academic intensive care units

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

  • admitted to an intensive care unit with either sepsis or other critical illness in previous 24 hrs

Exclusion criteria

Exclusion Criteria:

  • less than 18 yrs old
  • not expected to survive 72 hrs
05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
792 participants (actual)
Biospecimen retention
Samples with dna

Groups and cohorts

  • Severe Sepsis and Septic Shock
  • Other Critical Ill with or without Shock

    Severe Trauma, Neurological Injury, Other Shock (not Septic)

06

Study locations

6 sites
  • Alberta Health Services -- Foothills Hospital
    Calgary, Alberta, Canada
  • St. Paul's Hospital
    Vancouver, British Columbia V6Z 1Y6, Canada
  • Hamilton Health Sciences: General Site
    Hamilton, Ontario, Canada
  • St Joseph's Health Care
    Hamilton, Ontario, Canada
  • The Ottawa Hospital
    Ottawa, Ontario, Canada
  • Centre Hospitalier de l'Universite Laval
    Laval, Quebec, Canada
07

References and documents

Publications

  • Jackson Chornenki NL, Coke R, Kwong AC, Dwivedi DJ, Xu MK, McDonald E, Marshall JC, Fox-Robichaud AE, Charbonney E, Liaw PC. Comparison of the source and prognostic utility of cfDNA in trauma and sepsis. Intensive Care Med Exp. 2019 May 22;7(1):29. doi: 10.1186/s40635-019-0251-4. PubMed 31119471 ↗
  • Grin PM, Dwivedi DJ, Chathely KM, Trigatti BL, Prat A, Seidah NG, Liaw PC, Fox-Robichaud AE. Low-density lipoprotein (LDL)-dependent uptake of Gram-positive lipoteichoic acid and Gram-negative lipopolysaccharide occurs through LDL receptor. Sci Rep. 2018 Jul 12;8(1):10496. doi: 10.1038/s41598-018-28777-0. PubMed 30002483 ↗
08

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 Nov 2010 to primary completion in Jun 2012, 19 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 19 months is below 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
May 16, 2011
First posted
May 17, 2011
StartActual
Nov 2010
Primary completionActual
Jun 2012
CompletionActual
Sep 2016
Last update
Sep 20, 2017
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 Sep 20, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT01355042
Lead sponsor
Alison Fox-Robichaud
Responsible party
Alison Fox-Robichaud (Physician, Hamilton Health Sciences Corporation) — Sponsor-investigator
First posted
May 17, 2011
Start date
Nov 2010
Primary completion
Jun 2012
Completion
Sep 2016
Last update
Sep 20, 2017

Study contacts

Patricia Liaw, PhD
principal investigator · Thrombosis and Atherosclerosis Research Institute

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Sep 2017. You cannot join it, but the record below documents what was studied.

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