WoundsNCT02682069
Positive Predictive Value of the MolecuLight i:X Imaging Device to Predict the Presence of Bacteria in Chronic Wounds
A study testing MolecuLight i:X Imaging Device in people with Wounds, run by MolecuLight Inc..
Trial summary
This is a non-randomized evaluation for which 50 patients will be imaged at the Southwest Regional Wound Care Center, Lubbock, Texas, who present with a chronic wound and are receiving standard treatment. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Wounds
- What is being tested?
- MolecuLight i:X Imaging Device
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 30 participants
- Where
- No sites listed yet
- Study dates
- Feb 2016to 30 Aug 2017
- Phase
- Interventional
- 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
Who may be able to join
- Male or female patients presenting with chronic wound of the lower limb (e.g. diabetic foot ulcer, venous leg ulcer, other acceptable aetiology)
- 18 years or older
Who cannot join
- Treatment with an investigational drug within 1 month before study enrolment
- Use of systemic (oral or intravenous) antibiotics
- Inability to consent
- Any contra-indication to routine wound care and/or monitoring
About this study
Official title: A Prospective, Single-blind Evaluation of the Positive Predictive Value (PPV) of the MolecuLight i:X(TM) Imaging Device to Predict the Presence of Bacteria in Chronic Wounds
This is a non-randomized evaluation for which 50 patients will be imaged at the Southwest Regional Wound Care Center, Lubbock, Texas, who present with a chronic wound and are receiving standard treatment. The MolecuLight i:X Imaging 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 (punch biopsy method).
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 standard practice at each local clinic. 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
- Being tested
- MolecuLight i:X Imaging Device
- Keywords
- Diabetic foot ulcer, venous leg ulcer, fluorescence imaging, wound imaging
- Medical subject headings
- Wounds and Injuries, Diabetic Foot, Varicose Ulcer
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
MolecuLight i:X Imaging DeviceDevice
The intended use of the device is to assist clinicians during care and management of patients with chronic wounds by screening for the presence of potentially harmful bacteria levels. The device will be used as part of the current clinical wound assessment process which may include examination for characteristic signs and symptoms of infection. The device can capture and document either an image or video of the chronic wound where the presence of florescent 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.
| Study group | Role | What they receive |
|---|---|---|
| All patients | Experimental | There is one arm to this study and all patients will undergo the same procedures. The test of this technology is on a per wound basis where bacteria will fluoresce red and samples will be obtained from the discrete red locations. Microbiology results indicating the presence or absence of bacteria will be correlated to the fluorescence signal in the fluorescent images. Receives: Device: MolecuLight i:X Imaging Device |
What is being measured
The primary outcome is the main question the study is designed to answer.
Positive Predictive Value (PPV) - Ability of Fluorescence Imaging With the MolecuLight i:X to Predict Presence of Bacterial Loads of 104 CFU/g and Greater
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: Baseline
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted15 Feb 2016 (estimated)
- Study startFeb 2016
- Primary completion5 Jan 2017
- Study completion30 Aug 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 WoundsStudies 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
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Screening
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- Single blind
- Who is masked
- Outcomes assessor
- Enrolment
- 30 participants (actual)
Sponsor and investigators
- Lead sponsor
- MolecuLight Inc.
- Sponsor type
- Industry (pharma, biotech, devices)
- Collaborators
- Southwest Regional Wound Care Center
- Responsible party
- Sponsor
- Investigators
- Ron Wolcott, MD, Principal investigator, Southwest Regional Wound Care Center
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02682069
- Sponsor's protocol ID
- 16-001
- Status last verified
- Feb 2020
- First submitted
- 8 Feb 2016
- Last updated
- 26 Feb 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 26 Feb 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(TM) Imaging Device to Predict the Presence of Bacteria in Chronic Wounds
- ClinicalTrials.gov ID
- NCT02682069
- Acronym / sponsor ID
- 16-001
- Conditions
- Wounds
- Keywords
- Diabetic foot ulcer, venous leg ulcer, fluorescence imaging, wound imaging
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 30 participants (actual)
- Lead sponsor
- MolecuLight Inc.Industry (pharma, biotech, devices)
- Collaborators
- Southwest Regional Wound Care Center
- Study start
- Feb 2016
- Primary completion
- 5 Jan 2017 (actual)
- Study completion
- 30 Aug 2017 (actual)
- First posted
- 15 Feb 2016 (estimated)
- Results
- Posted 10 Feb 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 evaluation for which 50 patients will be imaged at the Southwest Regional Wound Care Center, Lubbock, Texas, who present with a chronic wound and are receiving standard treatment. The MolecuLight i:X Imaging 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 (punch biopsy method).
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 standard practice at each local clinic. 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
- Primary purpose
- Screening
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- Single blind (outcomes assessor)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| All patients | Experimental | Device: MolecuLight i:X Imaging DeviceThere is one arm to this study and all patients will undergo the same procedures. The test of this technology is on a per wound basis where bacteria will fluoresce red and samples will be obtained from the discrete red locations. Microbiology results indicating the presence or absence of bacteria will be correlated to the fluorescence signal in the fluorescent images. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (2 listed)
- Male or female patients presenting with chronic wound of the lower limb (e.g. diabetic foot ulcer, venous leg ulcer, other acceptable aetiology)
- 18 years or older
Key exclusion criteria (4 listed)
- Treatment with an investigational drug within 1 month before study enrolment
- Use of systemic (oral or intravenous) antibiotics
- Inability to consent
- 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 |
|---|---|---|
| MolecuLight i:X Imaging DeviceThe intended use of the device is to assist clinicians during care and management of patients with chronic wounds by screening for the presence of potentially harmful bacteria levels. The device will be used as part of the current clinical wound assessment process which may include examination for characteristic signs and symptoms of infection. The device can capture and document either an image or video of the chronic wound where the presence of florescent 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. | Device | All patients |
Primary outcome
Positive Predictive Value (PPV) - Ability of Fluorescence Imaging With the MolecuLight i:X to Predict Presence of Bacterial Loads of 104 CFU/g and Greater
Time frame: Baseline
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 26 Feb 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 Wolcott, MD principal investigator
Southwest Regional Wound Care Center
Questions about this trial
What is this clinical trial studying?
A study testing MolecuLight i:X Imaging Device in people with Wounds, run by MolecuLight Inc..
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 26 Feb 2020. Status can change between updates, so confirm with the study contact before making plans.
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 10 Feb 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) - Ability of Fluorescence Imaging With the MolecuLight i:X to Predict Presence of Bacterial Loads of 104 CFU/g and Greater (time frame: Baseline). 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 NCT02682069, 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 26 Feb 2020.