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Hydroxychloroquine vs. Azithromycin for Hospitalized Patients With Suspected or Confirmed COVID-19

Hydroxychloroquine vs. Azithromycin for Hospitalized Patients With Suspected or Confirmed COVID-19 (HAHPS): A Prospective Pragmatic Trial

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04329832
Acronym
HAHPS
Enrollment
85
Registered
2020-04-01
Start date
2020-03-30
Completion date
2021-01-01
Last updated
2022-04-20

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

Conditions

COVID-19

Keywords

SARS-CoV-2, Hydroxychloroquine, Azithromycin

Brief summary

This study will compare two drugs (hydroxychloroquine and azithromycin) to see if hydroxychloroquine is better than azithromycin in treating hospitalized patients with suspected or confirmed COVID-19.

Interventions

DRUGHydroxychloroquine

Patients in the hydroxychloroquine arm will receive hydroxychloroquine 400 mg by mouth twice daily for 1 day, then 200 mg by mouth twice daily for 4 days (dose reductions for weight \< 45 kg or GFR (glomerular filtration rate)\<50ml/min). For patients \< 45kg, doses will be halved. For patients with GFR\<50ml/min, the final dose of hydroxychloroquine will not be administered. If the patient has already received hydroxychloroquine prior to randomization (no more than 2 days), the prior doses will count toward the 5-day total.

DRUGAzithromycin

Patients in the azithromycin arm will receive azithromycin 500 mg on day 1 plus 250 mg daily on days 2-5 (may be administered intravenously per clinician preference). If the patient has already received azithromycin prior to randomization (no more than 2 days), the prior doses will count toward the 5-day total.

Sponsors

University of Utah
CollaboratorOTHER
Intermountain Health Care, Inc.
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Adult (age ≥ 18 years) * Confirmed OR suspected COVID-19, * Confirmed: Positive assay for COVID-19 within the last 10 days * Suspected: Pending assay for COVID-19 WITH high clinical suspicion * Scheduled for admission or already admitted to an inpatient bed

Exclusion criteria

* Allergy to hydroxychloroquine or azithromycin * History of bone marrow transplant * Known G6PD deficiency * Chronic hemodialysis or Glomerular Filtration Rate \< 20ml/min * Psoriasis * Porphyria * Concomitant use of digitalis, flecainide, amiodarone, procainamide, propafenone, cimetidine, dofetilide, phenobarbital, phenytoin, or sotalol * Known history of long QT syndrome * Current known QTc\>500 msec * Pregnant or nursing * Prisoner * Weight \< 35kg * Seizure disorder * Severe liver disease * Outpatient use of hydroxychloroquine for treatment of a disease other than COVID-19 OR has received more than 2 days of hydroxychloroquine or azithromycin for suspected or confirmed COVID-19 * Patient has recovered from COVID-19 and/or is being discharged from the hospital on day of enrollment. * Treating physician refuses to allow patient participation in the study * Unable to obtain informed consent * Prior enrollment in this study

Design outcomes

Primary

MeasureTime frameDescription
COVID Ordinal Outcomes Scale at 14 DaysAssessed once on day 14 after enrollment (enrollment is day 0)Improvement of clinical condition of the patient defined by the COVID-19 WHO ordinal Outcomes score. This scale reflects a range from uninfected to dead, where 0 is no clinical or virological evidence of infection, 1 is no limitation of activities, 2 is limitation of activities, 3 is hospitalized, no oxygen therapy, 4 is oxygen by mask or nasal prongs, 5 is non-invasive ventilation or high-flow oxygen, 6 is intubation and mechanical ventilation, 7 is ventilation + additional organ support - pressors, RRT (renal replacement therapy), ECMO (extracorporeal membrane oxygenation), and 8 is death.

Secondary

MeasureTime frameDescription
Hospital-free Days at 28 DaysAdmission (day 1) to 28 days after admission (day 28)Calculated as number of days patient not in hospital
Ventilator-free Days at 28 Days (Number of Days Patient Not on a Ventilator)Admission (day 1) to 28 days after admission (day 28)Calculated as number of days that patient is not on a ventilator up to day 28 days after admission
ICU-free Days at 28 DaysAdmission (day 1) to 28 days after admission (day 28)Calculated as number of days patient not in an ICU
Time to a 1-point Decrease in the WHO Ordinal Recovery ScoreAdmission (day 1) to 14 days after admission (day 14)Time to 1-point decrease in the WHO ordinal recovery score is defined as the number of days until the ordinal outcome score drops by 1 relative to baseline on the 8-point WHO COVID Ordinal Outcomes scale, which reflects a range from uninfected to dead, where 0 is no clinical or virological evidence of infection, 1 is no limitation of activities, 2 is limitation of activities, 3 is hospitalized, no oxygen therapy, 4 is oxygen by mask or nasal prongs, 5 is non-invasive ventilation or high-flow oxygen, 6 is intubation and mechanical ventilation, 7 is ventilation + additional organ support - pressors, RRT (renal replacement therapy), ECMO (extracorporeal membrane oxygenation), and 8 is death.

Countries

United States

Participant flow

Participants by arm

ArmCount
Hydroxychloroquine
Hydroxychloroquine: Patients in the hydroxychloroquine arm will receive hydroxychloroquine 400 mg by mouth twice daily for 1 day, then 200 mg by mouth twice daily for 4 days (dose reductions for weight \< 45 kg or GFR (glomerular filtration rate)\<50ml/min). For patients \< 45kg, doses will be halved. For patients with GFR\<50ml/min, the final dose of hydroxychloroquine will not be administered. If the patient has already received hydroxychloroquine prior to randomization (no more than 2 days), the prior doses will count toward the 5-day total.
42
Azithromycin
Azithromycin: Patients in the azithromycin arm will receive azithromycin 500 mg on day 1 plus 250 mg daily on days 2-5 (may be administered intravenously per clinician preference). If the patient has already received azithromycin prior to randomization (no more than 2 days), the prior doses will count toward the 5-day total.
43
Total85

Baseline characteristics

CharacteristicHydroxychloroquineAzithromycinTotal
Age, Continuous51 years58 years55 years
Comorbidities1 Scores on a scale0 Scores on a scale1 Scores on a scale
Ethnicity (NIH/OMB)
Hispanic or Latino
17 Participants15 Participants32 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
25 Participants28 Participants53 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
3 Participants5 Participants8 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
1 Participants0 Participants1 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
6 Participants4 Participants10 Participants
Race (NIH/OMB)
Unknown or Not Reported
6 Participants6 Participants12 Participants
Race (NIH/OMB)
White
26 Participants28 Participants54 Participants
Region of Enrollment
United States
42 participants43 participants85 participants
Sex: Female, Male
Female
19 Participants14 Participants33 Participants
Sex: Female, Male
Male
23 Participants29 Participants52 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
6 / 421 / 43
other
Total, other adverse events
3 / 422 / 43
serious
Total, serious adverse events
0 / 420 / 43

Outcome results

Primary

COVID Ordinal Outcomes Scale at 14 Days

Improvement of clinical condition of the patient defined by the COVID-19 WHO ordinal Outcomes score. This scale reflects a range from uninfected to dead, where 0 is no clinical or virological evidence of infection, 1 is no limitation of activities, 2 is limitation of activities, 3 is hospitalized, no oxygen therapy, 4 is oxygen by mask or nasal prongs, 5 is non-invasive ventilation or high-flow oxygen, 6 is intubation and mechanical ventilation, 7 is ventilation + additional organ support - pressors, RRT (renal replacement therapy), ECMO (extracorporeal membrane oxygenation), and 8 is death.

Time frame: Assessed once on day 14 after enrollment (enrollment is day 0)

ArmMeasureValue (MEDIAN)
Day 14 WHO COVID Score: HydroxychloroquineCOVID Ordinal Outcomes Scale at 14 Days2.0 score on a scale
Day 14 WHO COVID Score: AzithromycinCOVID Ordinal Outcomes Scale at 14 Days2.0 score on a scale
Secondary

Hospital-free Days at 28 Days

Calculated as number of days patient not in hospital

Time frame: Admission (day 1) to 28 days after admission (day 28)

ArmMeasureValue (MEDIAN)
Day 14 WHO COVID Score: HydroxychloroquineHospital-free Days at 28 Days18.5 Days
Day 14 WHO COVID Score: AzithromycinHospital-free Days at 28 Days21 Days
Secondary

ICU-free Days at 28 Days

Calculated as number of days patient not in an ICU

Time frame: Admission (day 1) to 28 days after admission (day 28)

ArmMeasureValue (MEDIAN)
Day 14 WHO COVID Score: HydroxychloroquineICU-free Days at 28 Days18 Days
Day 14 WHO COVID Score: AzithromycinICU-free Days at 28 Days19 Days
Secondary

Time to a 1-point Decrease in the WHO Ordinal Recovery Score

Time to 1-point decrease in the WHO ordinal recovery score is defined as the number of days until the ordinal outcome score drops by 1 relative to baseline on the 8-point WHO COVID Ordinal Outcomes scale, which reflects a range from uninfected to dead, where 0 is no clinical or virological evidence of infection, 1 is no limitation of activities, 2 is limitation of activities, 3 is hospitalized, no oxygen therapy, 4 is oxygen by mask or nasal prongs, 5 is non-invasive ventilation or high-flow oxygen, 6 is intubation and mechanical ventilation, 7 is ventilation + additional organ support - pressors, RRT (renal replacement therapy), ECMO (extracorporeal membrane oxygenation), and 8 is death.

Time frame: Admission (day 1) to 14 days after admission (day 14)

ArmMeasureValue (MEDIAN)
Day 14 WHO COVID Score: HydroxychloroquineTime to a 1-point Decrease in the WHO Ordinal Recovery Score7 Days
Day 14 WHO COVID Score: AzithromycinTime to a 1-point Decrease in the WHO Ordinal Recovery Score6 Days
Secondary

Ventilator-free Days at 28 Days (Number of Days Patient Not on a Ventilator)

Calculated as number of days that patient is not on a ventilator up to day 28 days after admission

Time frame: Admission (day 1) to 28 days after admission (day 28)

ArmMeasureValue (MEDIAN)
Day 14 WHO COVID Score: HydroxychloroquineVentilator-free Days at 28 Days (Number of Days Patient Not on a Ventilator)18 days
Day 14 WHO COVID Score: AzithromycinVentilator-free Days at 28 Days (Number of Days Patient Not on a Ventilator)18 days

Source: ClinicalTrials.gov · Data processed: Feb 18, 2026