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COVID-19Phase 2/3Mir-AgeNCT04393038

ABX464 in Treating Inflammation and Preventing Acute Respiratory Failure in Patients With COVID-19

A Phase 2/3 study testing ABX464 in people with COVID-19, run by Abivax S.A. at 30 sites in 8 countries.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

A phase 2/3, randomized, double blind, placebo-controlled study to evaluate the efficacy and the safety of ABX464 in treating inflammation and preventing acute respiratory failure in patients aged ≥65 and patients aged ≥18 with at least one additional risk factor who are infected with SARS-CoV-2 (the MiR-AGE study). Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
COVID-19
What is being tested?
ABX464
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
509 participants
Where
30 sitesin 8 countries
Study dates
1 Jul 2020to 16 Apr 2021
Phase
Phase 2/3
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Adult (≥ 18 years old) men or women, hospitalized or not hospitalized, diagnosed for SARS-CoV-2 infection by PCR, with at least one associated risk factor. Considered risk factors are:
  • Age ≥ 65 years
  • Obesity defined as BMI ≥ 30
  • Recent history of uncontrolled High Blood Pressure (SBP > 150 mm Hg DBP >100 mm Hg) according to investigator
  • Treated diabetes (type I or II)
  • History of ischemic cardiovascular disease
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  • Symptomatic patients at enrollment. Symptoms are defined as fever (body temperature ≥ 37.8 C oral/tympanic, or ≥ 38.2 C rectal) for more than 24 hours associated either with headache, sore throat, dry cough, fatigue, chest pain or choking sensation (with no associated respiratory distress), myalgia, anosmia or ageusia.
  • Patients with pulse oximetry arterial saturation ≥ 92 % on room air at enrolment.
  • Patients with the following hematological and biochemical laboratory parameters obtained within 7 days prior to Day 0:
  • Hemoglobin above 9.0 g / dL
  • Absolute Neutrophil Count ≥ 1000 / mm3
  • Platelets ≥ 100 000 mm3;
  • Creatinine clearance ≥ 50 mL / min by the Cockcroft Gault formula
  • Total serum bilirubin < 2 x ULN
  • Alkaline phosphatase < 2 x ULN, AST (SGOT) and ALT (SGPT) < 3 x ULN;

Who cannot join

  • Patients with moderate or severe acute respiratory failure or requiring noninvasive ventilation or oxygen or with SpO2 < 92% or tachypnea (respiratory rate ≥ 30 breaths/min).
  • Patients treated with immunosuppressors and/or immunomodulators.
  • Engrafted patients (organ and/or hematopoietic stem cells).
  • Patients with uncontrolled auto-immune disease.
  • Patients with known or suspected active (i.e. not controlled) bacterial, viral (excluding COVID-19) or fungal infections.
  • Patients with preexisting, severe and not controlled organ failure.
Show all 12Show fewer
  • History or active malignancy requiring chemotherapy or radiation therapy (excluding 2 years disease free survivor patients).
  • Pregnant or breast-feeding women.
  • Illicit drug or alcohol abuse or dependence that may compromise the patient's safety or adherence to the study protocol.
  • Use of any investigational or non-registered product within 3 months or within 5 half-lives preceding baseline, whichever is longer.
  • Hypersensitivity to ABX464 and/or its excipients.
  • Any condition, which in the opinion of the investigator, could compromise the patient's safety or adherence to the study protocol.

Trial locations and contacts

30 sites in 8 countries.

30 sites in 8 countries

Italy6 sites
  • Ospedale A. Manzonidi Lecco - ASST Lecco

    Lecco, 23900

  • Fondazione IRCCS Cà Granda - Ospedale Maggiore Policlinico - Infectious Diseases

    Milan, Lombardy, 20122

  • Ospedale San Paolo

    Milan, Lombardy, 20142

  • Ospedale Luigi Sacco, AO-PU

    Milan, Lombardy, 20157

  • Ospedale Niguarda

    Milan, 20162

  • Ospedale di Vittorio Veneto - Medecina generale

    Vittorio Veneto, Treviso, 31029

Other trials in Italy

Brazil5 sites
  • Centro Oncológico de Roraima - CECOR - NAP

    Boa Vista, Roraima, 69310-000

  • Fundacao de Medicina Tropical Doutor Heitor Vieira Dourado - Instituto de Pesquisa Clínica Carlos Borborema

    Manaus, Amazonas, 69040-000

  • Instituto Nacional de Infectologia Evandro Chagas - FIOCRUZ Rio de Janeiro

    Rio de Janeiro, 21040-360

  • Hospital das Clinicas da FMUSP

    São Paulo, São Paulo, 05403-000

  • Conjunto Hospitalar do Mandaqui

    São Paulo, 02401-400

Other trials in Brazil

Spain5 sites
  • H.G.U. Alicante

    Alicante, 03010

  • Hospital Universitari Germans Trias i Pujol

    Badalona, Barcelona, 08916

  • Hospital del Mar

    Barcelona, 08003

  • Hospital de La Princesa

    Madrid, 28006

  • Hospital Universitario Infanta Leonor

    Madrid, 28031

Other trials in Spain

France4 sites
  • Hôpital Nord

    Amiens, 80000

  • Centre Hospitalier Départemental de Vendée

    La Roche-sur-Yon, 85000

  • Centre Hospitalier Universitaire de Nice

    Nice, 06003

  • Hôpital Saint-Antoine

    Paris, 75571

Other trials in France

Germany4 sites
  • Universitätsklinikum Bonn

    Bonn, North Rhine-Westphalia, 53127

  • Asklepios Klinik St. Georg

    Hamburg, 20099

  • Asklepios Klinik Altona

    Hamburg, 22763

  • Universitätsmedizin Mannheim Ruprecht-Karls-Universität Heid

    Mannheim, Baden-Wurttemberg, 68167

Other trials in Germany

Belgium3 sites
  • Centre hospitalier Saint Pierre

    Brussels, 1000

  • Hôpital Erasme

    Brussels, 1070

  • UZ Gent

    Ghent, 9000

Other trials in Belgium

Mexico2 sites
  • Consultorio médico

    Mérida, Yucatán, 97070

  • Centro de Prevención y Rehabilitación de Enfermedades Pulmon

    Nuevo León, 64460

Other trials in Mexico

United Kingdom1 site
  • Royal Free Hospital

    London, NW3 2QG

Other trials in United Kingdom

About this study

Official title: A Phase 2/3, Randomized, Double Blind, Placebo-controlled Study to Evaluate the Efficacy and the Safety of ABX464 in Treating Inflammation and Preventing COVID-19 Associated Acute Respiratory Failure in Patients Aged ≥ 65 and Patients Aged ≥18 With at Least One Additional Risk Factor Who Are Infected With SARS-CoV-2.

A phase 2/3, randomized, double blind, placebo-controlled study to evaluate the efficacy and the safety of ABX464 in treating inflammation and preventing acute respiratory failure in patients aged ≥65 and patients aged ≥18 with at least one additional risk factor who are infected with SARS-CoV-2 (the MiR-AGE study).

Read the detailed description

This phase 2/3 study will evaluate the efficacy and safety of ABX464 50mg QD (oral capsule), on treating inflammation and preventing acute respiratory failure in patients infected with SARS-CoV-2.

Eligible patients will be randomized according to a 2:1 ratio into 2 treatment cohorts as follows:

  • Standard of Care + Placebo cohort: 344 patients
  • Standard of Care + ABX464 50mg QD: 690 patients

Study design:

The study will consist of 2 periods:

  • Treatment phase: randomized patients will be treated for 28 days
  • Safety follow-up phase of 14 days after which the End of Study visit (EOS) will be performed.
Conditions
COVID-19
Being tested
ABX464, Placebo
Keywords
COVID-19, ABX464
Medical subject headings
COVID-19

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • ABX464Drug

    ABX464 50mg QD for 28 days + Standard of Care

  • PlaceboDrug

    Placebo 50mg QD for 28 days + Standard of Care

Study groups in NCT04393038
Study groupRoleWhat they receive
ABX464ExperimentalABX464 - Capsules + Standard of Care (SOC)
Receives: Drug: ABX464
PlaceboPlacebo comparatorPlacebo - Capsules + Standard of Care (SOC)
Receives: Drug: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Rate of Responders: i.e. Rate of Patients Who do Not Require Use of High-flow Oxygen Invasive or Non-invasive Mechanical Ventilation (IMV and NIV, Respectively) Within 28 Days and Who Are Alive at the End of the 28 Days Period.

    Subjects will be assessed as responders if they did not receive oxygen supplementation through IMV and NIV during the treatment period, and they are alive at the end of the 28-days treatment period.

    Non responders are subjects who receive oxygen supplementation (through IMV and NIV during the treatment period) and/or who die during the 28-days treatment period.

    The use of high-flow oxygen being defined as settings of 3 L/min or greater AND with at least one SpO2 measurement < 92%, with or without O2 supplementation). Descriptive statistics will be presented by treatment arm.

    Measured: 28 days

Secondary outcomes (10)
  1. Rate of Patients Hospitalized

    To evaluate the proportion of patients requiring hospitalization during the study compared to the {Standard of Care + placebo} group An interim analysis was triggered when the first 305 patients were randomized in the study. As the study was stopped for futility based on the interim analysis results, no efficacy data were collected for the patients who were randomized but not included in the interim analysis. Efficacy results are only available for the 305 patients randomized at the time of the interim analysis.

    Measured: 28 days

  2. Percentage of Patients Reporting Each Severity Rating on a 7-point Ordinal Scale

    7-point ordinal scale is defined as Not hospitalized, no limitations on activities; Not hospitalized, limitation on activities; Hospitalized, not requiring supplemental oxygen; Hospitalized, requiring supplemental oxygen; Hospitalized, on non-invasive ventilation or high flow oxygen devices; Hospitalized, on invasive mechanical ventilation or ECMO; Death

    An interim analysis was triggered when the first 305 patients were randomized in the study. As the study was stopped for futility based on the interim analysis results, no efficacy data were collected for the patients who were randomized but not included in the interim analysis. Only key outcome analysis was performed during this interim analysis. After discontinuation of the study for futility, Abivax decided to not perform the analysis on this secondary outcome (SAP was amended accordingly). Therefore, these data are not available.

    Measured: 28-day treatment period

  3. Change From Enrolment in Inflammatory Markers in Plasma and in Immune Phenotype and Assessment of Cell-activation Markers in PBMCs

    An interim analysis was triggered when the first 305 patients were randomized in the study. As the study was stopped for futility based on the interim analysis results, no efficacy data were collected for the patients who were randomized but not included in the interim analysis. Only key outcome analysis was performed during this interim analysis. After discontinuation of the study for futility, Abivax decided to not perform the analysis on this secondary outcome (SAP was amended accordingly). Therefore, these data are not available.

    Measured: at each study visit during the 28-day treatment period

  4. Rate of Patients Requiring Oxygen Supplementation

    An interim analysis was triggered when the first 305 patients were randomized in the study. As the study was stopped for futility based on the interim analysis results, no efficacy data were collected for the patients who were randomized but not included in the interim analysis. Only key outcome analysis was performed during this interim analysis. After discontinuation of the study for futility, Abivax decided to not perform the analysis on this secondary outcome (SAP was amended accordingly). Therefore, these data are not available.

    Measured: 28-day treatment period

  5. Time to Hospitalization

    An interim analysis was triggered when the first 305 patients were randomized in the study. As the study was stopped for futility based on the interim analysis results, no efficacy data were collected for the patients who were randomized but not included in the interim analysis. Only key outcome analysis was performed during this interim analysis. After discontinuation of the study for futility, Abivax decided to not perform the analysis on this secondary outcome (SAP was amended accordingly). Therefore, these data are not available.

    Measured: 28-day treatment period

  6. Time to Assisted Ventilation and Oxygen Supplementation

    An interim analysis was triggered when the first 305 patients were randomized in the study. As the study was stopped for futility based on the interim analysis results, no efficacy data were collected for the patients who were randomized but not included in the interim analysis. Only key outcome analysis was performed during this interim analysis. After discontinuation of the study for futility, Abivax decided to not perform the analysis on this secondary outcome (SAP was amended accordingly). Therefore, these data are not available.

    Measured: 28-day treatment period

  7. Change From Baseline in microRNA-124 Levels

    An interim analysis was triggered when the first 305 patients were randomized in the study. As the study was stopped for futility based on the interim analysis results, no efficacy data were collected for the patients who were randomized but not included in the interim analysis. Only key outcome analysis was performed during this interim analysis. After discontinuation of the study for futility, Abivax decided to not perform the analysis on this secondary outcome (SAP was amended accordingly). Therefore, these data are not available.

    Measured: at each study visit during the 28-day treatment period

  8. Change From Baseline in CRP, Troponin I & T and D-dimer

    An interim analysis was triggered when the first 305 patients were randomized in the study. As the study was stopped for futility based on the interim analysis results, no efficacy data were collected for the patients who were randomized but not included in the interim analysis. Only key outcome analysis was performed during this interim analysis. After discontinuation of the study for futility, Abivax decided to not perform the analysis on this secondary outcome (SAP was amended accordingly). Therefore, these data are not available.

    Measured: at each study visit during the 28-day treatment period

  9. SARS-CoV-2 Viral Load

    Nasopharyngeal sample and/or in blood

    An interim analysis was triggered when the first 305 patients were randomized in the study. As the study was stopped for futility based on the interim analysis results, no efficacy data were collected for the patients who were randomized but not included in the interim analysis. Only key outcome analysis was performed during this interim analysis. After discontinuation of the study for futility, Abivax decided to not perform the analysis on this secondary outcome (SAP was amended accordingly). Therefore, these data are not available.

    Measured: at each study visit during the 28-day treatment period

  10. Number and Rates of Participants With Treatment Emergent Adverse Event

    Number and rates of participants included in the safety analysis set who had Treatment Emergent Adverse Event

    Measured: From D0 to D48 (28 days treatment period + up to 20 days Safety follow-up period)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted19 May 2020
  2. Study start1 Jul 2020
  3. Primary completion5 Mar 2021
  4. Study completion16 Apr 2021

Why it stopped: Interim analysis concludes that the study is futile

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2/3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
Phase 2/3, randomized, double blind, placebo-controlled study
Masking
Triple blind
Who is masked
Participant, Care provider, Investigator
Enrolment
509 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04393038
Sponsor's protocol ID
ABX464-401
Acronym
Mir-Age
Status last verified
Nov 2025
First submitted
18 May 2020
Last updated
26 Nov 2025
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 2/3 study testing ABX464 in people with COVID-19, run by Abivax S.A. at 30 sites in 8 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 15 inclusion and 12 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 26 Nov 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 30 sites in Italy, Brazil, Spain, France, Germany and 3 more countries. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this combined phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 26 Nov 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Rate of Responders: i.e. Rate of Patients Who do Not Require Use of High-flow Oxygen Invasive or Non-invasive Mechanical Ventilation (IMV and NIV, Respectively) Within 28 Days and Who Are Alive at the End of the 28 Days Period. (time frame: 28 days). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 26 Nov 2025.

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