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Nasal Photodisinfection COVID-19 Proof of Concept Study

Methylene Blue-mediated Photodisinfection for SARS-CoV-2 in the Upper Respiratory Tract

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04615936
Enrollment
45
Registered
2020-11-04
Start date
2020-10-13
Completion date
2021-10-19
Last updated
2021-11-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Corona Virus Infection, COVID-19, SARS-CoV 2

Keywords

COVID-19, SARS-CoV-2, coronavirus, influenza, photodisinfection, nasal photodisinfection

Brief summary

The study proposes to test photodisinfection (PDF) on SARS-CoV-2 in the nose. The study will use Health Canada approved Steriwave™ Nasal Decolonization (ND) in he nostril of patients infected with SARS-CoV-2. Participants are swabbed for SARS-CoV-2 before and after the PDF treatment. For the study, a small group of healthcare workers who have tested positive for SARS-CoV-2 will be included. They will not undergo the treatment but will need to swab their noses multiple times over the next 5 days. This nil group will provide the effect (if any) of swabbing SARS-CoV-2 levels in the nose.

Detailed description

The study proposes to test photodisinfetion (PDF) on levels of SARS-CoV-2 in the nose. The study will use Health Canada approved Steriwave™ Nasal Decolonization (ND) in patients infected with SARS-CoV-2 . Currrently, PDF is being used at some institutions before surgery to lower the risk of postoperative infection. PDF uses a Methylene Blue (MB) nasal spray, followed by 5 minutes of red-light exposure through a small light-diffusing applicator. This will need to be placed into each nostril. Participants are swabbed for SARS-CoV-2 before and after treatment. In addition to the patients testing positive for SARS-CoV-2, there will also be a small group of healthcare workers who have tested positive that will be included. Though they are not undergoing treatment, they will swab their own noses multiple times over a period of 5 days. This will allow us to evaluate the effect (if any) of swabbing on SARS-CoV-2 levels in the nose. The study hypothesis is that MB-mediated PDF will show the ability to kill SARS-CoV-2 which will consequently confirm its efficacy as a first line defense against the virus.

Interventions

OTHERMethylene-Blue Photodisinfection

Participants will receive a pre-treatment nasal swab followed MB-PDF, this involves an MB nasal spray, followed by five minutes of red-light exposure into each nostril. Ten minutes after the treatment, a post treatment nasal swab will be performed.

Sponsors

Sunnybrook Health Sciences Centre
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Masking description

N/A- masking not required

Intervention model description

There is only a single group of patients in the study who will undergo treatment. There is a small sub group/'nil' group of 3 healthcare workers that will not be undergoing the treatment but will instead be doing multiple nasal swabbing in the course of 5 days.

Eligibility

Sex/Gender
ALL
Healthy volunteers
No

Inclusion criteria

(patient population): * Recent SARS-CoV-2+ diagnosis * Present in hospital Inclusion Criteria (healthcare workers): * Recent SARS-CoV-2+ diagnosis * Ability to self-administer nasal swabs

Exclusion criteria

(patient population): * Immediate requirement for intubation (i.e. emergency airway) or inability to maintain independent oral airway

Design outcomes

Primary

MeasureTime frameDescription
RT-qPCR30 minutesThe main endpoint is microbiological; RT-qPCR will be conducted on the pre and post treatment swabs and the change in cycle threshold value will be measured

Countries

Canada

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026