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Single-Blind Study of a Single Dose of Peginterferon Lambda-1a Compared With Placebo in Outpatients With Mild COVID-19

A Phase 2 Randomized, Single-Blind Study of a Single Dose of Peginterferon Lambda-1a (Lambda) Compared With Placebo in Outpatients With Mild COVID-19

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04331899
Acronym
COVID-Lambda
Enrollment
120
Registered
2020-04-02
Start date
2020-04-25
Completion date
2021-05-06
Last updated
2021-11-30

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

Conditions

COVID-19

Keywords

Coronavirus

Brief summary

To evaluate the efficacy of a single dose of subcutaneous injections of 180 ug of Peginterferon Lambda-1a, compared with placebo in reducing the duration of viral shedding of SARS-CoV-2 virus in patients with uncomplicated COVID-19 disease.

Detailed description

Patients will attend up to 9 study visits over a period of up to 28 days.

Interventions

Peginterferon Lambda-1a (180 ug subcutaneous injection) single dose along with Standard of Care

OTHERPlacebo

Placebo subcutaneous injection along with Standard of Care Treatment for COVID-19 Infection

Sponsors

Stanford University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Subject)

Masking description

Single-blind study in which only patients are blinded.

Intervention model description

An open-label, single-blind randomized controlled trial. Study participants will be randomly assigned 1:1 to a single subcutaneous dose of Peginterferon Lambda-1a or placebo along with the standard of care.

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

1. Age ≥ 18 years and ≤ 75 years at the time of the assessment 2. Able and willing to understand the study, adhere to all study procedures, and provide written informed consent 3. Diagnosis of COVID-19 disease: 1. If symptomatic, the presence of mild to moderate symptoms without signs of respiratory distress, with FDA-cleared molecular diagnostic assay positive for SARS-CoV-2 within 72 hours from swab to the time of commencing informed consent: 2. If asymptomatic, initial diagnosis of SARS-CoV-2 infection with positive FDA-cleared molecular diagnostic assay obtained no more than 72 hours from initial swab to the time of commencing informed consent

Exclusion criteria

1. Patients who are hospitalized for inpatient treatment or currently being evaluated for potential hospitalization at the time of initiation of informed consent 2. Patients with a known allergy to Peginterferon Lambda-1a or any component thereof 3. Display symptoms of respiratory distress (Respiratory rate \>20, room air oxygen saturation of \<94%.) 4. Participation in a clinical trial with or use of any investigational agent within 30 days before screening 5. Treatment with interferons (IFN) within 12 months before screening 6. Previous use of Peginterferon Lambda-1a 7. History or evidence of any intolerance or hypersensitivity to IFNs or other substances contained in the study medication. 8. Female patients who are pregnant or breastfeeding. Male patients must confirm that their female sexual partners are not pregnant. 9. Current or previous history of decompensated liver disease (Child-Pugh Class B or C) or hepatocellular carcinoma 10. Co-infected with human immunodeficiency virus (HIV) 11. Significant abnormal laboratory test results at screening. 12. Other significant medical condition that may require intervention during the study 13. Concurrent use of any of the following medications: 1. Therapy with an immunomodulatory agent 2. Current use of heparin or Coumadin 3. Received blood products within 30 days before study randomization 4. Use of hematologic growth factors within 30 days before study randomization 5. Systemic antibiotics, antifungals, or antivirals for treatment of active infection within 24 hours before study randomization 6. Any prescription or herbal product that is not approved by the investigator 7. Long-term treatment (\> 2 weeks) with agents that have a high risk for nephrotoxicity or hepatotoxicity unless it is approved by the medical monitor 8. Receipt of systemic immunosuppressive therapy within 3 months before screening

Design outcomes

Primary

MeasureTime frameDescription
Duration Until Viral Shedding CessationAssessed for up to 28 daysTime to first of two consecutive negative respiratory secretions obtained by oropharyngeal and/or anterior nare swabs for SARS-CoV-2 by qRT-PCR.

Secondary

MeasureTime frameDescription
Change in Sars-CoV-2 Viral Loadbaseline, day 14Log10 Oropharyngeal viral load over time, mean change at day 14 (SD). Sars-CoV-2 RNA level in oropharyngeal and/or anterior nare swabs collected daily.
Area Under the Curve of SARS-COV-2 Viral Loadbaseline through day 14Log10 viral load area under the curve through day 14, median (IQR). Area under the curve of SARS-CoV-2 viral load in oropharyngeal and/or anterior nare swabs collected daily.
Duration Until Resolution of SymptomsUp to 28 daysDuration until resolution of symptoms in days, median (95% CI). Time to alleviation of all symptoms (fever, chills, cough, nasal congestion, muscle pains), defined as the time from initiation of treatment until all symptoms are rated as absent or mild in symptomatic patients.
Count of Participants Requiring Emergency Department Visits or Hospitalizations Within 28 Days of Initiation of Treatment28 days

Countries

United States

Participant flow

Recruitment details

Enrollment opened on April 24, 2020. The first patient was enrolled on April 25, 2020, and the last patient was enrolled on July 17, 2020.

Participants by arm

ArmCount
Lambda
Lambda single dose administered subcutaneously in addition to standard of care treatment.
60
Placebo
Placebo to match Lambda single dose administered subcutaneously in addition to standard of care treatment.
60
Total120

Withdrawals & dropouts

PeriodReasonFG000FG001
Trial Period (28 Days)Withdrawal by Subject22

Baseline characteristics

CharacteristicTotalPlaceboLambda
Absolute lymphocyte count1.5 cells/μl1.5 cells/μl1.5 cells/μl
Age, Continuous36 years34 years37 years
Asymptomatic at baseline8 Participants2 Participants6 Participants
Body temperature ≥99.5°F13 Participants7 Participants6 Participants
Duration of symptoms prior to randomization5 days5 days4 days
Oxygen saturation98 percentage of peripheral capillary O299 percentage of peripheral capillary O298 percentage of peripheral capillary O2
Race/Ethnicity, Customized
Asian
7 Participants4 Participants3 Participants
Race/Ethnicity, Customized
Latinx
75 Participants41 Participants34 Participants
Race/Ethnicity, Customized
More than one race
1 Participants0 Participants1 Participants
Race/Ethnicity, Customized
Native Hawaiian or other Pacific Islander
2 Participants0 Participants2 Participants
Race/Ethnicity, Customized
Unknown
2 Participants0 Participants2 Participants
Race/Ethnicity, Customized
White
33 Participants15 Participants18 Participants
Region of Enrollment
United States
120 Participants60 Participants60 Participants
Sex: Female, Male
Female
50 Participants26 Participants24 Participants
Sex: Female, Male
Male
70 Participants34 Participants36 Participants
Symptoms at baseline
Abdominal pain
14 Participants7 Participants7 Participants
Symptoms at baseline
Chest pain/pressure
27 Participants13 Participants14 Participants
Symptoms at baseline
Chills
49 Participants27 Participants22 Participants
Symptoms at baseline
Cough
69 Participants36 Participants33 Participants
Symptoms at baseline
Decreased taste or smell
57 Participants32 Participants25 Participants
Symptoms at baseline
Diarrhea
34 Participants18 Participants16 Participants
Symptoms at baseline
Fatigue
75 Participants42 Participants33 Participants
Symptoms at baseline
Headache
65 Participants36 Participants29 Participants
Symptoms at baseline
Joint pain
38 Participants19 Participants19 Participants
Symptoms at baseline
Myalgias
63 Participants34 Participants29 Participants
Symptoms at baseline
Nausea
34 Participants23 Participants11 Participants
Symptoms at baseline
Rash
9 Participants5 Participants4 Participants
Symptoms at baseline
Runny nose
26 Participants16 Participants10 Participants
Symptoms at baseline
Shortness of breath
32 Participants16 Participants16 Participants
Symptoms at baseline
Sore throat
45 Participants23 Participants22 Participants
Symptoms at baseline
Vomiting
6 Participants5 Participants1 Participants
White blood cell count5.5 cells/μl5.6 cells/μl5.5 cells/μl

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 600 / 60
other
Total, other adverse events
15 / 605 / 60
serious
Total, serious adverse events
2 / 602 / 60

Outcome results

Primary

Duration Until Viral Shedding Cessation

Time to first of two consecutive negative respiratory secretions obtained by oropharyngeal and/or anterior nare swabs for SARS-CoV-2 by qRT-PCR.

Time frame: Assessed for up to 28 days

ArmMeasureValue (MEDIAN)
LambdaDuration Until Viral Shedding Cessation7 days
PlaceboDuration Until Viral Shedding Cessation7 days
p-value: 0.2995% CI: [0.56, 1.19]Regression, Cox
Secondary

Area Under the Curve of SARS-COV-2 Viral Load

Log10 viral load area under the curve through day 14, median (IQR). Area under the curve of SARS-CoV-2 viral load in oropharyngeal and/or anterior nare swabs collected daily.

Time frame: baseline through day 14

ArmMeasureValue (MEDIAN)
LambdaArea Under the Curve of SARS-COV-2 Viral Load28.5 Log10 copies*days/ml
PlaceboArea Under the Curve of SARS-COV-2 Viral Load29.6 Log10 copies*days/ml
p-value: 0.9595% CI: [0.85, 1.16]Regression, Linear
Secondary

Change in Sars-CoV-2 Viral Load

Log10 Oropharyngeal viral load over time, mean change at day 14 (SD). Sars-CoV-2 RNA level in oropharyngeal and/or anterior nare swabs collected daily.

Time frame: baseline, day 14

ArmMeasureValue (MEAN)Dispersion
LambdaChange in Sars-CoV-2 Viral Load-4.3 Log10 copies per mLStandard Deviation 1.3
PlaceboChange in Sars-CoV-2 Viral Load-4.9 Log10 copies per mLStandard Deviation 4.7
p-value: 0.9195% CI: [-1.23, 1.11]Regression, Linear
Secondary

Count of Participants Requiring Emergency Department Visits or Hospitalizations Within 28 Days of Initiation of Treatment

Time frame: 28 days

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
LambdaCount of Participants Requiring Emergency Department Visits or Hospitalizations Within 28 Days of Initiation of TreatmentHospitalizations2 Participants
LambdaCount of Participants Requiring Emergency Department Visits or Hospitalizations Within 28 Days of Initiation of TreatmentEmergency Department Visits5 Participants
PlaceboCount of Participants Requiring Emergency Department Visits or Hospitalizations Within 28 Days of Initiation of TreatmentHospitalizations2 Participants
PlaceboCount of Participants Requiring Emergency Department Visits or Hospitalizations Within 28 Days of Initiation of TreatmentEmergency Department Visits3 Participants
Secondary

Duration Until Resolution of Symptoms

Duration until resolution of symptoms in days, median (95% CI). Time to alleviation of all symptoms (fever, chills, cough, nasal congestion, muscle pains), defined as the time from initiation of treatment until all symptoms are rated as absent or mild in symptomatic patients.

Time frame: Up to 28 days

ArmMeasureValue (MEDIAN)
LambdaDuration Until Resolution of Symptoms8 days
PlaceboDuration Until Resolution of Symptoms9 days
p-value: 0.7695% CI: [0.6, 1.41]Regression, Cox

Source: ClinicalTrials.gov · Data processed: Feb 23, 2026