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Phase I/II Safety, Dose Finding & Antiviral Activity of RD-X19 in Mild/Moderate Outpatient COVID-19

Phase I/II Randomized, Dose Escalation Study to Evaluate the Safety and Antiviral Activity of the RD-X19 Device in SARS-CoV-2 Infected Individuals With Uncomplicated COVID-19

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04662671
Enrollment
31
Registered
2020-12-10
Start date
2020-11-18
Completion date
2021-01-30
Last updated
2022-09-08

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

Conditions

COVID19

Brief summary

This randomized, Phase I/II feasibility study will evaluate the safety and efficacy of the RD-X19 device in SARS-CoV-2 infected individuals with uncomplicated COVID-19.

Detailed description

This is a randomized, sham-controlled dose escalation and bioeffect study. The primary goal of the study is to evaluate the safety of the RD-X19 device in SARS-CoV-2 infected individuals with outpatient COVID-19 and to assess the reduction of SARS-CoV-2 viral load in each dose group compared to sham controls. The primary safety measure is absence of device-related serious adverse events or patterns of severity ≥2 device-related adverse events. Safety and tolerability (local reactogenicity) will be assessed actively on each clinic visit by review of potential adverse events (AEs) and targeted physical examination, as required. Metabolic, liver, kidney and hematological laboratory evaluations will be performed at baseline and at Day 8 or early termination (and potentially during unscheduled) clinic visits. Methemoglobin assessments will be performed at baseline and Day 8. Various efficacy assessments will explore the impact of RD-X19 treatment on the reduction in log10 SARS-CoV-2 viral load and alleviation of symptoms associated with COVID-19. Both the magnitude of reduction as a function of dose as well as time to clearance will be assessed.

Interventions

DEVICERD-X19

Experimental device that uses safe electromagnetic energy to stimulate the proximal repository of respiratory tract infectious disease pathogens.

Sponsors

EmitBio Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Masking description

Double-blind, sham-controlled

Intervention model description

The study will be conducted as a randomized, double-blind, sham-controlled study in SARS-CoV-2 infected individuals with outpatient COVID-19. Subjects will be randomized 2:1 RD-X19 to Sham Device treatment arms.

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

1. Positive for SARS-CoV-2 antigen via nasal swab at or within the past 24 hours of the screening visit detected using an FDA authorized SARS-CoV-2 antigen test. 2. Onset of signs and symptoms consistent with COVID-19\* no longer than within the past 3 days\* and have either a) a fever of at least 100 °F or b) at least two moderate or severe symptoms (cough, sore throat, nasal congestion, headache, chills/sweats, muscle or joint pain, fatigue, and nausea) at the time of screening. 3. Provides written informed consent prior to initiation of any study procedures. 4. Be able to understand and agrees to comply with planned study procedures and be available for all study visits. 5. Agrees to the collection of nasopharyngeal swabs, oropharyngeal swabs, oral saliva specimen collection and venous blood specimens per protocol. 6. Agrees to refrain from using oral antiseptics (e.g. hydrogen peroxide rinse, Listerine) or mouthwashes of any kind during the study. 7. Male or non-pregnant female, 18 to 65 years of age, inclusive, at time of enrollment. 8. No uncontrolled disease process (chronic or acute), other than COVID-19 signs and symptoms\*. 9. No physical or mental conditions or attributes at the time of screening, which in the opinion of the PI, will prevent full adherence to, and completion of, the protocol.

Exclusion criteria

1. Positive urine pregnancy test at screening. 2. Any medical disease or condition that, in the opinion of the site Principal Investigator (PI) or appropriate sub-investigator, precludes study participation. 3. Presence of self-reported or medically documented uncontrolled significant medical or psychiatric condition(s) other than COVID-19. 4. Reports a recent positive test result (within the past 6 months) for hepatitis B surface antigen, hepatitis C virus antibody, or HIV-1 antibodies at screening. 5. Has a history of alcohol abuse or other recreational drug (excluding cannabis) use within 1 month of Study Day 1. 6. COVID-19 signs associated with acute respiratory distress or imminent serious medical outcomes. \^\^ 7. BMI ≥36 8. Subjects living (e.g., siblings, spouses, relatives, roommates) in the same household cannot be enrolled. 9. Has participated in another investigational study involving any intervention for SARS-CoV-2/COVID- 19 within the past 6 months or any clinical trial with interventional investigational product within 30 days of screening. 10. Currently enrolled in or plans to participate in another clinical trial with an interventional investigational agent that will be received during the studyperiod. 11. History of hospitalization within the past 60 days. 12. History of systemic antiviral therapies within the past 30 days. 13. History of oral corticoid steroid use within the past 14 days or steroid injection within the past 6 months. Active use of nasal or inhalable steroids is also exclusionary. Topical steroids are not exclusionary. 14. Has a history of hypersensitivity or severe allergic reaction (e.g., anaphylaxis, generalized urticaria, angioedema, other significant reaction) to nitrites, nitrates, or sun exposure. 15. Has any oral abnormality (e.g. ulcer, oral mucositis, gingivitis) that in the opinion of the investigator would interfere with device use, or intra-oral metal body piercings that cannot be removed for the duration of the study. Metal orthodontia is permitted as braces will be covered by the device mouthpiece.

Design outcomes

Primary

MeasureTime frameDescription
Primary Safety MeasureBaseline thru Day 8Number of Participants with device-related serious adverse events or any patterns of severity ≥2 device-related adverse events in the same SOC grouping of Preferred Terms based on Medical Dictionary for Regulatory Activities (MedDRA) coding, as determined throughout the course of the study.
Primary Efficacy MeasureBaseline to Day 8Time weighted average change in viral load from baseline by RT-qPCR from Day 1 to Day 8.

Secondary

MeasureTime frameDescription
Proportion of Subjects Demonstrating Clearance of Viral InfectionDays 1, 3, 5 and 8Proportion of subjects demonstrating clearance of viral infection, defined as a negative test via RT-qPCR on Day 8/ET.
Median Time to Alleviation of SymptomsDaily through day 8Median time to alleviation of symptoms as measured by the time when all eight symptoms (cough, sore throat, nasal congestion, headache, chills/sweats, muscle or joint pain, fatigue, and nausea) had been assessed by the subject as none (0) or mild (1).

Countries

United States

Participant flow

Participants by arm

ArmCount
RD-X19 Device
RD-X19: Experimental device that uses safe electromagnetic energy to stimulate the proximal repository of respiratory tract infectious disease pathogens.
20
Sham
Sham: The sham devices were designed to provide the same user experience but at energy and fluence levels with a lower inactivation potential against SARS-CoV-2 in vitro than that delivered by the active devices.
11
Total31

Baseline characteristics

CharacteristicRD-X19 DeviceShamTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
20 Participants11 Participants31 Participants
Laboratory Confirmed SARS-CoV-2 at Baseline via RT-PCR (saliva)17 Participants11 Participants28 Participants
Race/Ethnicity, Customized
Race or Ethnic Group
Black
1 Participants1 Participants2 Participants
Race/Ethnicity, Customized
Race or Ethnic Group
Hispanic or Latino
15 Participants7 Participants22 Participants
Race/Ethnicity, Customized
Race or Ethnic Group
White
4 Participants3 Participants7 Participants
Region of Enrollment
United States
20 participants11 participants31 participants
Sex: Female, Male
Female
12 Participants3 Participants15 Participants
Sex: Female, Male
Male
8 Participants8 Participants16 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 200 / 11
other
Total, other adverse events
12 / 209 / 11
serious
Total, serious adverse events
0 / 200 / 11

Outcome results

Primary

Primary Efficacy Measure

Time weighted average change in viral load from baseline by RT-qPCR from Day 1 to Day 8.

Time frame: Baseline to Day 8

Population: Modified Analysis Set with Laboratory Confirmed SARS-CoV-2 at Baseline via RT-PCR

ArmMeasureValue (LEAST_SQUARES_MEAN)
RD-X19 DevicePrimary Efficacy Measure-1.69 TWAC (SARS-COV-2 N1 Log10 copies/mL)
ShamPrimary Efficacy Measure-1.23 TWAC (SARS-COV-2 N1 Log10 copies/mL)
Primary

Primary Safety Measure

Number of Participants with device-related serious adverse events or any patterns of severity ≥2 device-related adverse events in the same SOC grouping of Preferred Terms based on Medical Dictionary for Regulatory Activities (MedDRA) coding, as determined throughout the course of the study.

Time frame: Baseline thru Day 8

Population: Intent-to-Treat

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
RD-X19 DevicePrimary Safety Measure0 Participants
ShamPrimary Safety Measure0 Participants
Secondary

Median Time to Alleviation of Symptoms

Median time to alleviation of symptoms as measured by the time when all eight symptoms (cough, sore throat, nasal congestion, headache, chills/sweats, muscle or joint pain, fatigue, and nausea) had been assessed by the subject as none (0) or mild (1).

Time frame: Daily through day 8

Population: ITT

ArmMeasureValue (MEDIAN)
RD-X19 DeviceMedian Time to Alleviation of Symptoms75.3 hours
ShamMedian Time to Alleviation of Symptoms112.7 hours
Secondary

Proportion of Subjects Demonstrating Clearance of Viral Infection

Proportion of subjects demonstrating clearance of viral infection, defined as a negative test via RT-qPCR on Day 8/ET.

Time frame: Days 1, 3, 5 and 8

Population: Modified analysis set for virologic efficacy assessments.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
RD-X19 DeviceProportion of Subjects Demonstrating Clearance of Viral Infection10 Participants
ShamProportion of Subjects Demonstrating Clearance of Viral Infection4 Participants
Post Hoc

Median Time to Sustained Resolution of Symptoms

Median time to Sustained Resolution of Symptoms as measured by the time when all eight symptoms (cough, sore throat, nasal congestion, headache, chills/sweats, muscle or joint pain, fatigue, and nausea) had been assessed by the subject as none (0) or mild (1) without rebound of any score greater than 1 for the remainder of the trial.

Time frame: Daily through day 8

Population: ITT

ArmMeasureValue (MEDIAN)
RD-X19 DeviceMedian Time to Sustained Resolution of Symptoms103.8 hours
ShamMedian Time to Sustained Resolution of Symptoms160.7 hours

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