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SuspendedNCT04329572Updated Nov 7, 2022

Efficacy and Safety of Hydroxychloroquine and Azithromycin for Patients With Moderate to Severe COVID-19

An Early Phase 1 interventional study of Hydroxychloroquine Sulfate and Azithromycin Tablets in COVID-19, sponsored by Azidus Brasil. Suspended at 1 site in Brazil. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2022-11-07.

Sponsored by Azidus Brasil · Early Phase 1, Interventional, and Treatment

Why this study was suspended
Azidus, the CRO hired for this study by Prevent Senior has lost the interest to conduct this study.
Phase
Early Phase 1
Study type
Interventional
Enrollment
400
Allocation
Not applicable
Ages
18 Years and older
Sex
All
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Study summary

This is an exploratory study to evaluate the efficacy of hydroxychloroquine (400 mg BID on D1 and 400 mg/day on D2 to D5) and azithromycin (500 mg/ 5 days) to treat moderate to severe COVID-19 pneumonia.

Read the detailed description

This is an exploratory, open label, multi-center study to evaluate the efficacy of hydroxychloroquine (HCQ) (400 mg BID on D1 and 400 mg/day on D2 to D5) and azithromycin (AZT) (500 mg/ 5 days) to treat moderate to severe COVID-19 pneumonia.

We aim to demonstrate decrease in hospital related complications among patients who are hospitalized with moderate or severe COVID-19 by treating them with HCQ and AZT on top of standard care compared to patients who receive standard care only.

Patients hospitalized with confirmed diagnosis of COVID-19 will receive the treatment.

Patients that do not fulfill the inclusion/exclusion criteria or that is not willing to participate in the study will be invited to consent the use of their data as part of a "control" group.

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Conditions studied

  • COVID-19

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03

In context

COVID-19

7,640 studies on the registry are indexed under COVID-19; 488 are open to participants now.

This study's planned enrollment of 400 is above the median of 100 across 4,099 interventional studies indexed under COVID-19.

Browse COVID-19 studies →

Lead sponsor

Azidus Brasil is the lead sponsor of 78 studies on the registry; 5 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  1. Informed consent from patient or legal representative.
  2. Male or female, aged ≥ 18 years;
  3. Laboratory confirmation of 2019-nCoV infection by reverse-transcription polymerase chain reaction (RT-PCR) from any diagnostic sampling source;
  4. At least one of the characteristic symptoms of COVID-19
  5. Hospitalized for up to 36h with non-invasive ventilation or up to 24h with invasive ventilation.
  6. Negative result for pregnancy test (if applicable).

Exclusion criteria

Exclusion Criteria:

  1. Participating in another RCT in the past 12 months;
  2. Known allergy to HCQ or chloroquine
  3. Any contraindication to HTC or AZT, including retinopathy and prolonged QT,
  4. Severely reduced LV function
  5. Severely reduced renal function;
  6. Pregnancy or breast feeding
  7. Any other clinical condition which, in the opinion of the principal investigator, would not allow safe completion of the protocol and safe administration of the investigational products
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Study design

Phase
Early Phase 1
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
400 participants (estimated)

Study arms

  • Experimental
    HCQ + AZT

    All patients included in the study will receive HCQ (400 mg BID on D1 and 400 mg/day on D2 to D5) and AZT (500 mg/ 5 days) on top of standard care.

    Drug: Hydroxychloroquine Sulfate · Drug: Azithromycin Tablets

Interventions

  • DrugHydroxychloroquine Sulfate

    All patients included in the study will receive HCQ (400 mg BID on D1 and 400 mg/day on D2 to D5) for 5 days.

    Also known as: Reuquinol

  • DrugAzithromycin Tablets

    All patients included in the study will receive AZT 500 mg per day for 5 days.

    Also known as: Azithromycin

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What researchers measure

Primary outcomes

  1. Evolution of acute respiratory syndrome, oxygen saturation hemodynamic stability

    Evaluation of change from baseline. Kaplan-meier method will be used.

    Time frame: 28 days

Secondary outcomes

  1. Viral load

    Evaluation of change in viral load

    Time frame: Day 6

  2. Change in Clinical Condition

    Time for normalization of body temperature, respiratory rate and cough relief

    Time frame: 28 days

  3. Evolution of Acute Respiratory Syndrome

    Time to wean off oxygen supplementation and / or invasive / non-invasive ventilatory support;

    Time frame: 28 days

  4. Hospital discharge

    Time to be discharged from hospital

    Time frame: 28 days

  5. Rate of mortality within 28-days

    Evaluation of change in acute respiratory syndrome

    Time frame: 28 days

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Study locations

1 site
  • Prevent Senior Private Operadora de Saúde LTDA.
    São Paulo, Brazil
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References and documents

Individual participant data

Plan to share: No — It is believed that after the data analysis and presentation to the National Commission on Research Ethics, all data of the study will become public.

No publications or documents are linked to this record.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 7, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT04329572
Lead sponsor
Azidus Brasil
Responsible party
Sponsor
First posted
Apr 1, 2020
Start date
Apr 23, 2020
Primary completion
May 31, 2020
Completion
Jun 30, 2023 (estimated)
Last update
Nov 7, 2022

Study contacts

Luciana Ferrara
study director · Azidus Brasil

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is suspended, as verified in Nov 2022. You cannot join it, but the record below documents what was studied.

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