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WithdrawnNCT05026801Updated Oct 28, 2021

Azithromycin Plus Hydroxychloroquine for COVID-19 Infection

A Phase 3 interventional study of Azithromycin plus hydroxychloroquine in Respiratory Tract Infection Viral, sponsored by Iterum Therapeutics, International Limited. Withdrawn at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2021-10-28.

Sponsored by Iterum Therapeutics, International Limited · Phase 3, Interventional, and Treatment

Why this study was withdrawn
Inadequate support to carry out study
Phase
Phase 3
Study type
Interventional
Enrollment
0
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

This is a randomized, double-blinded, Phase 3, multi-center trial of the clinical and microbiologic response of patients with a respiratory tract infection (RTI) due to coronavirus treated with a combination of azithromycin and hydroxychloroquine.

Approximately 200 patients with symptoms of an RTI who test positive for SARS-CoV-2 by polymerase chain reaction (PCR) will receive a combination of azithromycin 500 mg and hydroxychloroquine 600 mg or matching placebos for six consecutive days. There will be two treatment regimens into which patients are randomized so that all patients will receive some active therapy.

Read the detailed description

As of March 22, 2020, a total of 311,988 people worldwide have been diagnosed with a respiratory infection caused by SARS-CoV-2 of whom 13,407 have died. In the United States 26,747 patients have tested positive of whom 340 have died. There is at present no established therapy for this infection. After the SARS epidemic in 2002, investigations identified chloroquine as a possible inhibitor of replication of this coronavirus. When the SARS-CoV-2 epidemic started in December of 2019, clinicians began to use chloroquine in an attempt to control the infection in newly diagnosed patients. Investigators from China reported chloroquine phosphate has apparent efficacy in treatment of pneumonia due to SARS-CoV-2. Following this report, investigators in France initiated an open label study of hydroxychloroquine, with the addition of azithromycin, in a small number of subjects with SARS-CoV-2 infection. Relative to no treatment the investigators identified a significant reduction in viral isolation by PCR in the nasal swabs of treated patients, with an additional effect seen when patients were also given azithromycin. Azithromycin, like chloroquine, is a weak base that concentrates in endosomes and lysosomes and raises the pH in those vesicles. It is possible that azithromycin and chloroquine's effect on endosomal processing reduces the inflammatory response by affecting TLR4 signaling through the endosomes.

02

Conditions studied

  • Respiratory Tract Infection Viral

Keywords

  • Coronavirus
03

In context

Coronavirus Infections

1,112 studies on the registry are indexed under Coronavirus Infections; 52 are open to participants now.

Browse Coronavirus Infections studies →

Lead sponsor

Iterum Therapeutics, International Limited is the lead sponsor of 9 studies on the registry; 1 is open to participants now.

Of its 5 completed or terminated interventional studies of FDA-regulated products, 5 (100%) have results posted.

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

04

Who can participate

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

Eligibility criteria

Inclusion Criteria:

  1. Adults ≥18 years of age
  2. History of a respiratory tract infection (RTI) for more than one but less than six days including two or more of the following signs and symptoms of an RTI:

    • Fever (T ≥ 38.0 C, 100.5 F), cough, sputum production, arthralgia/myalgia, anosmia/ageusia or difficulty breathing.
  3. A nasal or throat swab or nasal wash positive by PCR for SARS-CoV-2.
  4. Has given written to participate in the study. Due to the public health issues related to this viral infection, witnessed informed consent may be obtained remotely.

Exclusion Criteria:

Exclusion Criteria:

  1. Patients likely, in the opinion of the investigator, to require hospitalization within 48 hours of randomization into the study.
  2. Concurrent use of non-study antibacterial drug therapy that would have a potential effect on outcome evaluations in patients with an RTI
  3. Concurrent use of any other medications for the purpose of treating a viral infection such as influenza antivirals
  4. Inability to swallow oral medication in tablet form
  5. Patient has severe chronic kidney disease, or is receiving hemodialysis, or peritoneal dialysis or had a renal transplant
  6. Patient is known to have severe neutropenia
  7. Patients with a known prolongation of the or are taking medications which could prolong the QT interval
  8. Patient is known to be pregnant
  9. Patients with a known history of myasthenia gravis
  10. Patients with a history of allergy to azithromycin, hydroxychloroquine or chloroquine
  11. Patient is considered unlikely to survive the study period or has a rapidly progressive or terminal illness, including septic shock, associated with a high risk of mortality
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

QT and QTc

On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.

The study may name a correction formula and a limit in milliseconds, often around 450–480.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Investigator)
Enrollment
0 participants (actual)

Study arms

  • Active comparator
    Azithromycin plus hydroxychloroquine

    Azithromycin 500 mg plus hydroxychloroquine 600 mg by mouth daily for six consecutive days

    Drug: Azithromycin plus hydroxychloroquine

  • Placebo comparator
    Placebo

    Placebo

    Drug: Azithromycin plus hydroxychloroquine

Interventions

  • DrugAzithromycin plus hydroxychloroquine

    Drug pages: Azithromycin · Hydroxychloroquine

    All patients will receive active comparator. One group will receive placebo on D1-3 followed by active comparator D4-9, while the other group will receive active comparator D1-6 followed by placebo D7-9.

    Also known as: Placebo

06

What researchers measure

Primary outcomes

  1. Microbiologic response

    Presence or absence of SARS-CoV-2 by PCR on nasopharyngeal specimen

    Time frame: Day 3 (+/- 1 day)

Secondary outcomes

  1. Combined clinical and microbiologic response

    Presence or absence of SARS-CoV-2 by PCR on nasopharyngeal specimen and improvement in at least two of the signs and symptoms of RTI

    Time frame: Day 3 (+/- 1 day)

07

Study locations

1 site
  • Waterbury Hospial
    Waterbury, Connecticut 06708, United States
08

References and documents

Individual participant data

Plan to share: Yes — Deidentified individual participant data for all primary and secondary outcome measures will be made available.

Supporting information: Study protocol, Statistical analysis plan, Informed consent form, Clinical study report, Analytic code

Time frame: Data will be available within 30 days of study completion.

Access criteria: Data access requests will be reviewed on a case by case basis. Requestors will be required to sign a Data Access Agreement.

Data sharing details ↗ · www.iterumtx.com

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Feb 2021 to primary completion in Aug 2021, 6 months.

How these figures are worked out, and which studies are left out of them.

Registered
Feb 8, 2021
First posted
Aug 30, 2021
StartActual
Feb 8, 2021
Primary completionActual
Aug 26, 2021
CompletionActual
Aug 26, 2021
Last update
Oct 28, 2021
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Oct 28, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05026801
Lead sponsor
Iterum Therapeutics, International Limited
Collaborators
Waterbury Hospital
Responsible party
Sponsor
First posted
Aug 30, 2021
Start date
Feb 8, 2021
Primary completion
Aug 26, 2021
Completion
Aug 26, 2021
Last update
Oct 28, 2021

Study contacts

Michael Dunne, MD
principal investigator · Iterum Therapeutics

Oversight

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

Not currently enrolling

This study is withdrawn, as verified in Oct 2021. You cannot join it, but the record below documents what was studied.

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Studies of the drugs tested here: Azithromycin · Hydroxychloroquine

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