Wounds and InjuriesNCT03091361
Post Market Clinical Followup of MolecuLight i:X's PPV to Predict Presence of Bacteria in Wounds
An observational study of Wounds and Injuries, run by MolecuLight Inc. at 1 site in Canada.
Trial summary
This is a non-randomized, single-blind post market clinical follow-up study for which 50 patients will be imaged at the Judy Dan Research and Treatment Centre who present with a chronic and are receiving standard wound care treatment. The i:X imaging device visualizes fluorescing bacteria in real-time. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Wounds and Injuries
- How many people
- 30 participants
- Where
- 1 siteCanada
- Study dates
- Jun 2016to Feb 2017
- Phase
- Observational
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Patients receiving routine wound care.
Who may be able to join
- presents with a chronic wound of the lower limb (e.g. diabetic foot ulcer, venous leg ulcer, other acceptable aetiology)
- red or cyan fluorescence signals observed within or around wound on MolecuLight i:X images
Who cannot join
- Treatment with an investigational drug within 1 month before study enrollment
- Use of systemic (oral or intravenous) antibiotics
- Inability to consent to medical photography
- Any contra-indication to routine wound care and/or monitoring
Trial locations and contacts
1 site in 1 country.
Canada1 site
Judy Dan Research and Treatment Centre
North York, Ontario, M2R 1N5
About this study
Official title: A Prospective, Single-blind Evaluation of the Positive Predictive Value (PPV) of the MolecuLight i:X™ Imaging Device to Predict the Presence of Bacteria in Chronic Wounds
This is a non-randomized, single-blind post market clinical follow-up study for which 50 patients will be imaged at the Judy Dan Research and Treatment Centre who present with a chronic and are receiving standard wound care treatment. The i:X imaging device visualizes fluorescing bacteria in real-time. The device will be used as an adjunctive tool in the assessment of the wound and will be used to guide the targeted sampling of a wound (with curettage scraping). The overall objective of this work is to evaluate the positive predictive value (PPV) of the MolecuLight i:X Imaging Device in predicting the presence of bacteria in chronic wounds. The presence of bacteria will be determined micro-biologically by semi-quantitative culture analysis.
Read the detailed description
MolecuLight Inc. (Toronto, Canada) has recently introduced to the Canadian market an innovative imaging device, the MolecuLight i:X™ Imaging Device, that offers real-time detection of important biological and molecular information of a chronic wound, and could have significant impact on improving conventional wound care and management. The MolecuLight i:X Imaging Device is intended to assist clinicians during care and management of patients with chronic wounds by screening for the presence of potentially harmful bacteria levels. The device can capture and document either an image or video of the chronic wound where the presence of fluorescent bacteria appears under violet light illumination. This information can be used to guide a clinician to inspect, sample, debride or further evaluate areas within or around a wound where fluorescent bacteria are present. Though the MolecuLight i:X Imaging Device has been shown to be effective in controlled settings, this study is deploying the device in a larger population and evaluating the ability of the MolecuLight i:X device to positively predict the presence of bacteria in chronic wounds.
The overall objective of this work is to evaluate the MolecuLight i:X Imaging Device in screening of chronic wounds for the presence of bacteria. The device is intended to guide the clinician to inspect, sample, debride or further evaluate areas within or around a wound where fluorescent bacteria are present.
All imaging will be performed with the MolecuLight i:X Imaging Device at an appropriate distance from the wound of interest (8 - 12 cm), which is indicated by the range finder LED. Illumination is provided by two violet (405 nm) LEDs that produce a bright, but clinically safe, uniform illumination. Fluorescence imaging is performed on the camera in real-time while the device is in fluorescence mode and the room lights are turned off. If room ambient light cannot be eliminated to an acceptable level (indicated by the ambient light sensor), the MolecuLight drape must be used to achieve a dark environment. A standard measurement sticker will be placed adjacent to the wound within the field of view to act as a reference for size.
All microbiological analysis will be performed as per clinic standard practice. Tissue samples will be analyzed for culture and sensitivity, yielding the species of bacteria present in the sample (if any), the susceptibility to various antibiotics and a measure of the bacterial load.
- Conditions
- Wounds and Injuries
- Being tested
- imaging, no intervention
- Keywords
- Bacterial imaging, PPV, Chronic wounds
- Medical subject headings
- Wounds and Injuries
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
imaging, no interventionOther
no intervention
| Study group | Role | What they receive |
|---|---|---|
| All patients (imaging/no intervention) | There is only one group in this study, the imaging/no intervention group. These patients will meet all enrollment criteria and bacterial (red or cyan) fluorescence will be visualized within or around their wound with the MolecuLight i:X imaging device. A targeted curettage sample will be taken from the site of fluorescence and sent for microbiological analysis. There will be no intervention or followup. Receives: Other: imaging, no intervention |
What is being measured
The primary outcome is the main question the study is designed to answer.
Positive Predictive Value (PPV) of Localized Red Fluorescence Signals With Microbiological Samples
PPV reflects the probability that a region of red fluorescence within or around a wound will contain bacteria. Meaning the number cases where qPCR analysis of wound tissue biopsies from red fluorescent region showed to have pathogen load ≥ 104 CFU/g divided by the total number of cases where red florescence was observed in the wound multiplied by 100,
Measured: 3 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted27 Mar 2017
- Study startJun 2016
- Primary completionNov 2016
- Study completionFeb 2017
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Wounds and InjuriesStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 30 participants (actual)
Sponsor and investigators
- Lead sponsor
- MolecuLight Inc.
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- Ron Linden, MD, Principal investigator, Judy Dan Research and Treatment Center
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03091361
- Sponsor's protocol ID
- 16-101
- Status last verified
- Jan 2020
- First submitted
- 8 Nov 2016
- Last updated
- 18 Jan 2020
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
- Individual data sharing
- No
Publications
Rennie MY, Lindvere-Teene L, Tapang K, Linden R. Point-of-care fluorescence imaging predicts the presence of pathogenic bacteria in wounds: a clinical study. J Wound Care. 2017 Aug 2;26(8):452-460. doi: 10.12968/jowc.2017.26.8.452.
PubMed 28795890
Study at a glance
From the registry record, last updated by the sponsor on 18 Jan 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Prospective, Single-blind Evaluation of the Positive Predictive Value (PPV) of the MolecuLight i:X™ Imaging Device to Predict the Presence of Bacteria in Chronic Wounds
- ClinicalTrials.gov ID
- NCT03091361
- Acronym / sponsor ID
- 16-101
- Conditions
- Wounds and Injuries
- Keywords
- Bacterial imaging, PPV, Chronic wounds
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 30 participants (actual)
- Lead sponsor
- MolecuLight Inc.Industry (pharma, biotech, devices)
- Study start
- Jun 2016
- Primary completion
- Nov 2016 (actual)
- Study completion
- Feb 2017 (actual)
- First posted
- 27 Mar 2017 (actual)
- Results
- Posted 18 Jan 2020
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This is a non-randomized, single-blind post market clinical follow-up study for which 50 patients will be imaged at the Judy Dan Research and Treatment Centre who present with a chronic and are receiving standard wound care treatment. The i:X imaging device visualizes fluorescing bacteria in real-time. The device will be used as an adjunctive tool in the assessment of the wound and will be used to guide the targeted sampling of a wound (with curettage scraping). The overall objective of this work is to evaluate the positive predictive value (PPV) of the MolecuLight i:X Imaging Device in predicting the presence of bacteria in chronic wounds. The presence of bacteria will be determined micro-biologically by semi-quantitative culture analysis.
Detailed description
MolecuLight Inc. (Toronto, Canada) has recently introduced to the Canadian market an innovative imaging device, the MolecuLight i:X™ Imaging Device, that offers real-time detection of important biological and molecular information of a chronic wound, and could have significant impact on improving conventional wound care and management. The MolecuLight i:X Imaging Device is intended to assist clinicians during care and management of patients with chronic wounds by screening for the presence of potentially harmful bacteria levels. The device can capture and document either an image or video of the chronic wound where the presence of fluorescent bacteria appears under violet light illumination. This information can be used to guide a clinician to inspect, sample, debride or further evaluate areas within or around a wound where fluorescent bacteria are present. Though the MolecuLight i:X Imaging Device has been shown to be effective in controlled settings, this study is deploying the device in a larger population and evaluating the ability of the MolecuLight i:X device to positively predict the presence of bacteria in chronic wounds.
The overall objective of this work is to evaluate the MolecuLight i:X Imaging Device in screening of chronic wounds for the presence of bacteria. The device is intended to guide the clinician to inspect, sample, debride or further evaluate areas within or around a wound where fluorescent bacteria are present.
All imaging will be performed with the MolecuLight i:X Imaging Device at an appropriate distance from the wound of interest (8 - 12 cm), which is indicated by the range finder LED. Illumination is provided by two violet (405 nm) LEDs that produce a bright, but clinically safe, uniform illumination. Fluorescence imaging is performed on the camera in real-time while the device is in fluorescence mode and the room lights are turned off. If room ambient light cannot be eliminated to an acceptable level (indicated by the ambient light sensor), the MolecuLight drape must be used to achieve a dark environment. A standard measurement sticker will be placed adjacent to the wound within the field of view to act as a reference for size.
All microbiological analysis will be performed as per clinic standard practice. Tissue samples will be analyzed for culture and sensitivity, yielding the species of bacteria present in the sample (if any), the susceptibility to various antibiotics and a measure of the bacterial load.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| All patients (imaging/no intervention) | – | Other: imaging, no interventionThere is only one group in this study, the imaging/no intervention group. These patients will meet all enrollment criteria and bacterial (red or cyan) fluorescence will be visualized within or around their wound with the MolecuLight i:X imaging device. A targeted curettage sample will be taken from the site of fluorescence and sent for microbiological analysis. There will be no intervention or followup. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Patients receiving routine wound care.
Key inclusion criteria (2 listed)
- presents with a chronic wound of the lower limb (e.g. diabetic foot ulcer, venous leg ulcer, other acceptable aetiology)
- red or cyan fluorescence signals observed within or around wound on MolecuLight i:X images
Key exclusion criteria (4 listed)
- Treatment with an investigational drug within 1 month before study enrollment
- Use of systemic (oral or intravenous) antibiotics
- Inability to consent to medical photography
- Any contra-indication to routine wound care and/or monitoring
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| imaging, no interventionno intervention | Other | All patients (imaging/no intervention) |
Primary outcome
Positive Predictive Value (PPV) of Localized Red Fluorescence Signals With Microbiological Samples
Time frame: 3 months
PPV reflects the probability that a region of red fluorescence within or around a wound will contain bacteria. Meaning the number cases where qPCR analysis of wound tissue biopsies from red fluorescent region showed to have pathogen load ≥ 104 CFU/g divided by the total number of cases where red florescence was observed in the wound multiplied by 100,
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 18 Jan 2020.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Derived from this study: PubMed 28795890Rennie MY, Lindvere-Teene L, Tapang K, Linden R. Point-of-care fluorescence imaging predicts the presence of pathogenic bacteria in wounds: a clinical study. J Wound Care. 2017 Aug 2;26(8):452-460. doi: 10.12968/jowc.2017.26.8.452.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Ron Linden, MD principal investigator
Judy Dan Research and Treatment Center
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Wounds and Injuries, run by MolecuLight Inc. at 1 site in Canada.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 18 Jan 2020. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Canada. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Yes. Results are posted in the registry (first posted 18 Jan 2020). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Positive Predictive Value (PPV) of Localized Red Fluorescence Signals With Microbiological Samples (time frame: 3 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT03091361, which also lists 1 linked publication.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 18 Jan 2020.