Skip to content

Pragmatic Factorial Trial of Hydroxychloroquine, Azithromycin, or Both for Treatment of Severe SARS-CoV-2 Infection

Pragmatic Factorial Trial of Hydroxychloroquine, Azithromycin, or Both for Treatment of Severe SARS-CoV-2 Infection

Status
Terminated
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04335552
Enrollment
11
Registered
2020-04-06
Start date
2020-04-17
Completion date
2020-06-26
Last updated
2021-05-17

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

Conditions

SARS-CoV-2

Keywords

COVID-19

Brief summary

This is a pragmatic, randomized, open-label, incomplete factorial with nested randomization clinical trial evaluating the efficacy and safety of two potential treatments for hospitalized patients with confirmed SARS-CoV-2 infection. Participants who are hospitalized and have a positive nucleic acid amplification test for SARS-CoV-2 will undergo an initial randomization in a 1:1 ratio to one of the following regimens: Arm 1: Standard of care alone Arm 2: Standard of care plus hydroxychloroquine Participants who meet eligibility criteria to receive azithromycin will undergo a second randomization in a 1:1 ratio to receive additional concurrent therapy. This will effectively result in four treatment groups: 1. Standard of care alone 2. Standard of care plus hydroxychloroquine 3. Standard of care plus azithromycin 4. Standard of care plus hydroxychloroquine plus azithromycin

Interventions

OTHERStandard of care

Standard of care

DRUGHydroxychloroquine

Hydroxychloroquine will be administered orally or via feeding tube at a dosage of 800 mg on day 1, followed by 600 mg daily on days 2-5

DRUGAzithromycin

Azithromycin will be administered orally or via feeding tube at a dosage of 500 mg on day 1, followed by 250 mg daily on days 2-5

Sponsors

Duke University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
FACTORIAL
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

Patients will be initially randomized to one of two arms in a 1:1 ratio: 1) Standard of care treatment or 2) Standard of care treatment plus 5 days of hydroxychloroquine. Participants who meet eligibility criteria to receive azithromycin will undergo a second randomization in a 1:1 ratio to receive additional concurrent therapy.

Eligibility

Sex/Gender
ALL
Age
12 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Admitted to participating hospital with symptoms suggestive of COVID-19 infection OR develop symptoms of COVID-19 during hospitalization 2. Subject (or legally authorized representative) can provide written informed consent (in English or Spanish) affirming intention to comply with planned study procedures prior to enrollment 3. Male or female adult aged 12 years or older at the time of enrollment 4. Has laboratory-confirmed SARS-CoV-2 infection determined by a validated nucleic acid amplification assay (public health or commercial) in any respiratory specimen collected within 14 days of randomization 5. Illness of any duration that includes * Radiographic evidence of pulmonary infiltrates (chest X-ray or CT scan) OR * Clinical documentation of lower respiratory symptoms (cough, shortness of breath, wheezing) OR * Any documented SpO2 ≤ 94% on room air OR * Any inpatient initiation or supplemental oxygen regardless of documented cause

Exclusion criteria

1. Participating in any other clinical trial of an experimental agent for COVID-19 2. On hydroxychloroquine at any time during hospitalization, or within 180 days of hospitalization for COVID-19 regardless of indication 3. History of G6PD deficiency, cirrhosis, long QT syndrome or porphyria of any classification 4. Most recent ECG prior to time of screening with QTc of ≥500 msec 5. Known hypersensitivity to hydroxychloroquine or 4-aminoquinoline derivatives 6. Death anticipated within 48 hours of enrollment 7. Inability to obtain informed consent from the patient or designated medical decision maker

Design outcomes

Primary

MeasureTime frameDescription
World Health Organization (WHO) Ordinal Scale Measured at 14 Days After EnrollmentDay 14The ordinal scale is an assessment of the clinical status at the first assessment of a given study day. The scale is as follows: 1) Death; 2) Hospitalized, on invasive mechanical ventilation or extracorporeal membrane oxygenation (ECMO); 3) Hospitalized, on non-invasive ventilation or high flow oxygen devices; 4) Hospitalized, requiring supplemental oxygen; 5) Hospitalized, not requiring supplemental oxygen - requiring ongoing medical care (COVID-19 related or otherwise); 6) Hospitalized, not requiring supplemental oxygen - no longer requires ongoing medical care; 7) Not hospitalized, limitation on activities and/or requiring home oxygen; 8) Not hospitalized, no limitations on activities.

Secondary

MeasureTime frameDescription
Number of Days on Mechanical VentilationBaseline
Number of Patients Not Receiving Mechanical Ventilation at Baseline Who Progress to Requiring Mechanical Ventilation During the Index HospitalizationIndex hospitalization, up to 46 days
WHO Ordinal Scale Measured at 28 Days After EnrollmentDay 28The ordinal scale is an assessment of the clinical status at the first assessment of a given study day. The scale is as follows: 1) Death; 2) Hospitalized, on invasive mechanical ventilation or extracorporeal membrane oxygenation (ECMO); 3) Hospitalized, on non-invasive ventilation or high flow oxygen devices; 4) Hospitalized, requiring supplemental oxygen; 5) Hospitalized, not requiring supplemental oxygen - requiring ongoing medical care (COVID-19 related or otherwise); 6) Hospitalized, not requiring supplemental oxygen - no longer requires ongoing medical care; 7) Not hospitalized, limitation on activities and/or requiring home oxygen; 8) Not hospitalized, no limitations on activities.
Number of Participants Who Died During the Index HospitalizationIndex hospitalization, up to 46 days
Number of Participants With All-cause Study Medication DiscontinuationIndex hospitalization, up to 46 daysNumber of participants who discontinued study medication for any reason
Number of Participants With Severe Adverse EventsDay 14
Hospital Length of Stay in Days for the Index HospitalizationIndex hospitalization, up to 46 days

Countries

United States

Participant flow

Participants by arm

ArmCount
Standard of Care
Standard of care: Standard of care
2
Standard of Care Plus Hydroxychloroquine
Standard of care plus hydroxychloroquine for 5 days Standard of care: Standard of care Hydroxychloroquine: Hydroxychloroquine will be administered orally or via feeding tube at a dosage of 800 mg on day 1, followed by 600 mg daily on days 2-5
4
Standard of Care Plus Azithromycin
Standard of care plus azithromycin for 5 days Standard of care: Standard of care Azithromycin: Azithromycin will be administered orally or via feeding tube at a dosage of 500 mg on day 1, followed by 250 mg daily on days 2-5
3
Standard of Care Plus Hydroxychloroquine Plus Azithromycin
Standard of care plus hydroxychloroquine plus azithromycin for 5 days Standard of care: Standard of care Hydroxychloroquine: Hydroxychloroquine will be administered orally or via feeding tube at a dosage of 800 mg on day 1, followed by 600 mg daily on days 2-5 Azithromycin: Azithromycin will be administered orally or via feeding tube at a dosage of 500 mg on day 1, followed by 250 mg daily on days 2-5
2
Total11

Baseline characteristics

CharacteristicStandard of CareTotalStandard of Care Plus Hydroxychloroquine Plus AzithromycinStandard of Care Plus AzithromycinStandard of Care Plus Hydroxychloroquine
Age, Continuous56.3 years
STANDARD_DEVIATION 20.5
54.7 years
STANDARD_DEVIATION 12.9
50.3 years
STANDARD_DEVIATION 12.5
57.0 years
STANDARD_DEVIATION 4.2
59.0 years
STANDARD_DEVIATION 14.1
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants6 Participants1 Participants2 Participants3 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
2 Participants5 Participants1 Participants1 Participants1 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
1 Participants3 Participants1 Participants1 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants1 Participants0 Participants0 Participants1 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
1 Participants7 Participants1 Participants2 Participants3 Participants
Region of Enrollment
United States
2 Participants11 Participants2 Participants3 Participants4 Participants
Sex: Female, Male
Female
1 Participants3 Participants0 Participants1 Participants1 Participants
Sex: Female, Male
Male
1 Participants8 Participants2 Participants2 Participants3 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
0 / 11 / 42 / 31 / 2
other
Total, other adverse events
0 / 10 / 40 / 30 / 2
serious
Total, serious adverse events
0 / 11 / 41 / 30 / 2

Outcome results

Primary

World Health Organization (WHO) Ordinal Scale Measured at 14 Days After Enrollment

The ordinal scale is an assessment of the clinical status at the first assessment of a given study day. The scale is as follows: 1) Death; 2) Hospitalized, on invasive mechanical ventilation or extracorporeal membrane oxygenation (ECMO); 3) Hospitalized, on non-invasive ventilation or high flow oxygen devices; 4) Hospitalized, requiring supplemental oxygen; 5) Hospitalized, not requiring supplemental oxygen - requiring ongoing medical care (COVID-19 related or otherwise); 6) Hospitalized, not requiring supplemental oxygen - no longer requires ongoing medical care; 7) Not hospitalized, limitation on activities and/or requiring home oxygen; 8) Not hospitalized, no limitations on activities.

Time frame: Day 14

Population: Intention to treat (includes all randomized, excludes 1 participant who withdrew prior to outcome measurement)

ArmMeasureValue (MEAN)Dispersion
Standard of CareWorld Health Organization (WHO) Ordinal Scale Measured at 14 Days After Enrollment1 units on a scale
Standard of Care Plus HydroxychloroquineWorld Health Organization (WHO) Ordinal Scale Measured at 14 Days After Enrollment2.5 units on a scaleStandard Deviation 3
Standard of Care Plus AzithromycinWorld Health Organization (WHO) Ordinal Scale Measured at 14 Days After Enrollment5.3 units on a scaleStandard Deviation 3.8
Standard of Care Plus Hydroxychloroquine Plus AzithromycinWorld Health Organization (WHO) Ordinal Scale Measured at 14 Days After Enrollment4.5 units on a scaleStandard Deviation 5
Secondary

Hospital Length of Stay in Days for the Index Hospitalization

Time frame: Index hospitalization, up to 46 days

Population: Intention to treat excluding 1 participant who withdrew

ArmMeasureValue (MEAN)Dispersion
Standard of CareHospital Length of Stay in Days for the Index Hospitalization6 days
Standard of Care Plus HydroxychloroquineHospital Length of Stay in Days for the Index Hospitalization9 daysStandard Deviation 11
Standard of Care Plus AzithromycinHospital Length of Stay in Days for the Index Hospitalization14.7 daysStandard Deviation 14.6
Standard of Care Plus Hydroxychloroquine Plus AzithromycinHospital Length of Stay in Days for the Index Hospitalization2.5 daysStandard Deviation 0.7
Secondary

Number of Days on Mechanical Ventilation

Time frame: Baseline

Population: Intention to treat (1 participant who withdrew excluded)

ArmMeasureValue (MEAN)Dispersion
Standard of CareNumber of Days on Mechanical Ventilation0 days
Standard of Care Plus HydroxychloroquineNumber of Days on Mechanical Ventilation5.5 daysStandard Deviation 11
Standard of Care Plus AzithromycinNumber of Days on Mechanical Ventilation8.67 daysStandard Deviation 15
Standard of Care Plus Hydroxychloroquine Plus AzithromycinNumber of Days on Mechanical Ventilation0 daysStandard Deviation 0
Secondary

Number of Participants Who Died During the Index Hospitalization

Time frame: Index hospitalization, up to 46 days

Population: Intention to treat (1 participant who withdrew not included)

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Standard of CareNumber of Participants Who Died During the Index Hospitalization0 Participants
Standard of Care Plus HydroxychloroquineNumber of Participants Who Died During the Index Hospitalization1 Participants
Standard of Care Plus AzithromycinNumber of Participants Who Died During the Index Hospitalization2 Participants
Standard of Care Plus Hydroxychloroquine Plus AzithromycinNumber of Participants Who Died During the Index Hospitalization1 Participants
Secondary

Number of Participants With All-cause Study Medication Discontinuation

Number of participants who discontinued study medication for any reason

Time frame: Index hospitalization, up to 46 days

Population: Intention to treat excluding 1 participant who withdrew

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Standard of CareNumber of Participants With All-cause Study Medication Discontinuation0 Participants
Standard of Care Plus HydroxychloroquineNumber of Participants With All-cause Study Medication Discontinuation0 Participants
Standard of Care Plus AzithromycinNumber of Participants With All-cause Study Medication Discontinuation0 Participants
Standard of Care Plus Hydroxychloroquine Plus AzithromycinNumber of Participants With All-cause Study Medication Discontinuation0 Participants
Secondary

Number of Participants With Severe Adverse Events

Time frame: Day 14

Population: Intention to treat excluding 1 participant who withdrew

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Standard of CareNumber of Participants With Severe Adverse Events0 Participants
Standard of Care Plus HydroxychloroquineNumber of Participants With Severe Adverse Events1 Participants
Standard of Care Plus AzithromycinNumber of Participants With Severe Adverse Events1 Participants
Standard of Care Plus Hydroxychloroquine Plus AzithromycinNumber of Participants With Severe Adverse Events0 Participants
Secondary

Number of Patients Not Receiving Mechanical Ventilation at Baseline Who Progress to Requiring Mechanical Ventilation During the Index Hospitalization

Time frame: Index hospitalization, up to 46 days

Population: Intention to treat excluding 1 participant who withdrew

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Standard of CareNumber of Patients Not Receiving Mechanical Ventilation at Baseline Who Progress to Requiring Mechanical Ventilation During the Index Hospitalization0 Participants
Standard of Care Plus HydroxychloroquineNumber of Patients Not Receiving Mechanical Ventilation at Baseline Who Progress to Requiring Mechanical Ventilation During the Index Hospitalization1 Participants
Standard of Care Plus AzithromycinNumber of Patients Not Receiving Mechanical Ventilation at Baseline Who Progress to Requiring Mechanical Ventilation During the Index Hospitalization1 Participants
Standard of Care Plus Hydroxychloroquine Plus AzithromycinNumber of Patients Not Receiving Mechanical Ventilation at Baseline Who Progress to Requiring Mechanical Ventilation During the Index Hospitalization0 Participants
Secondary

WHO Ordinal Scale Measured at 28 Days After Enrollment

The ordinal scale is an assessment of the clinical status at the first assessment of a given study day. The scale is as follows: 1) Death; 2) Hospitalized, on invasive mechanical ventilation or extracorporeal membrane oxygenation (ECMO); 3) Hospitalized, on non-invasive ventilation or high flow oxygen devices; 4) Hospitalized, requiring supplemental oxygen; 5) Hospitalized, not requiring supplemental oxygen - requiring ongoing medical care (COVID-19 related or otherwise); 6) Hospitalized, not requiring supplemental oxygen - no longer requires ongoing medical care; 7) Not hospitalized, limitation on activities and/or requiring home oxygen; 8) Not hospitalized, no limitations on activities.

Time frame: Day 28

Population: Intention to treat excluding 1 participant who withdrew

ArmMeasureValue (MEAN)Dispersion
Standard of CareWHO Ordinal Scale Measured at 28 Days After Enrollment1 score on a scale
Standard of Care Plus HydroxychloroquineWHO Ordinal Scale Measured at 28 Days After Enrollment2.8 score on a scaleStandard Deviation 3.5
Standard of Care Plus AzithromycinWHO Ordinal Scale Measured at 28 Days After Enrollment5.3 score on a scaleStandard Deviation 3.8
Standard of Care Plus Hydroxychloroquine Plus AzithromycinWHO Ordinal Scale Measured at 28 Days After Enrollment4.5 score on a scaleStandard Deviation 5

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