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Hemolytic-Uremic SyndromePhase 3NCT06389474

Efficacy of INM004 in Children With STEC-HUS

A Phase 3 study testing INM004 in people with Hemolytic-Uremic Syndrome, run by Inmunova S.A. at 52 sites in 9 countries.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
Search all trials

Trial summary

The objectives of this study are to evaluate the efficacy, safety, and pharmacokinetics of INM004 in pediatric patients with Hemolytic Uremic Syndrome associated to infection by Shiga toxin-producing Escherichia coli (STEC-HUS). Read more about this study

Who is it for?
Ages 9 months to 17 years
Conditions the study is for
Hemolytic-Uremic Syndrome
What is being tested?
INM004
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
220 participants
Where
52 sitesin 9 countries
Study dates
5 Oct 2024to 31 Dec 2026
Phase
Phase 3
Are there results?
Not yet: the study is under way

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 9 months to 17 years
  • All sexes
  • No healthy volunteers
  • Child

Who may be able to join

  • Age ≥ 9 months and < 18 years at the time of randomization.
  • In addition, only for subjects < 1 year and ≥ 15 years, confirmation of STEC infection determined by:
  • Detection of generic Stx, Stx1, Stx2, or Stx1/Stx2 in stools by enzyme immunoassay (EIA); or
  • Detection of stx, stx1, stx2, or stx1/stx2 genes in stools by Polymerase Chain Reaction (PCR); or
  • Detection of specific anti-polysaccharide (IgM) antibodies in serum; or
  • Fecal culture positive for E. coli O157 confirmed by serogroup-specific seroagglutination.
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  • Hospitalization at the participating institution.
  • History of onset of diarrhea within 10 days prior to STEC-HUS diagnosis at the participating institution.
  • Diagnosis of STEC-HUS defined as a subject with signs of renal damage, hemolysis, and platelet consumption:
  • Signs of renal damage defined as:
  • Serum creatinine value above the ULN for age and sex, and GFR below the LLN for age, sex, and height.
  • Presence of hemolysis documented by:
  • LDH levels above the ULN for age, and/or
  • Presence of schistocytes in peripheral blood smear.
  • Platelet consumption according to any of the following laboratory criteria:
  • Peripheral blood platelet count < 150 × 103/μL, and/or
  • A ≥50% decrease in peripheral blood platelet count compared to a sample collected within the previous 24 hours.
  • Informed consent form signed and dated by the subject or, the legal guardian(s), with the subject's assent as appropriate based on age and regulatory guidelines in the region.
  • Subjects who have already had menarche must have a negative pregnancy test.

Who cannot join

  • Start of dialysis within 48 hours prior to admission to the participating institution.
  • More than 24 hours from diagnosis of STEC-HUS at the participating institution up to randomization.
  • History of chronic/recurrent hemolytic anemia, thrombocytopenia, or CKD.
  • Personal and/or family history of atypical HUS.
  • Suspected HUS secondary to infectious processes other than gastrointestinal (e.g., Streptococcus pneumoniae, HIV).
  • Suspected HUS secondary to other etiologies (e.g., drug-associated HUS, neoplasms, bone marrow or solid organ transplantation, autoimmune disorders).
Show all 18Show fewer
  • Any other acute or chronic medical condition that, in the opinion of the investigator, may interfere with the evaluation of the efficacy and/or safety of the study medication.
  • History of: a) anaphylaxis of any kind; b) prior administration of equine serum (e.g., antivenom, anti-arachnid serum, anti-SARS-CoV-2 serum, etc.) or an allergic reaction from contact or exposure to horses.
  • Pregnant or breastfeeding woman.
  • Impossibility of hospitalization in the participating institution.
  • Concurrent participation in another clinical trial or having participated in a clinical trial in the last 3 months.
  • Severe malnutrition. Defined when the weight is three standard deviations below the median, according to height, age and sex as per WHO guidelines.
  • Medical conditions that may affect kidney function or cause/enhance neurological symptoms or signs:
  • Congenital or acquired anomalies that may affect functioning renal mass.
  • Epilepsy or structural abnormalities of the brain that may increase the risk of seizures.
  • Trisomy 21.
  • Prematurity (born before 28 weeks gestation).
  • Other (according to investigator criteria).

Trial locations and contacts

52 sites in 9 countries. Contact the study team or a site near you to ask about taking part.

Mariana Colonna, Bioch contact

+541120331455 ext. 6184

mcolonna@inmunova.com

Ana Perez contact

ana.perez@exeltis.com

52 sites in 9 countries

Argentina25 sites, 18 recruiting
  • Hospital Interzonal Dr. José Penna

    Bahía Blanca, Buenos Aires, 8000

    Not yet recruiting
  • Hospital Penna

    Bahía Blanca, Buenos Aires

    Not yet recruiting
  • Sanatorio Güemes

    Buenos Aires, Buenos Aires F.D., 1188

    Active, not recruiting
  • Hospital de Pediatría S.A.M.I.C. "Prof. Dr. Juan P. Garrahan"

    Buenos Aires, Buenos Aires F.D., 1245

    Recruiting
  • Hospital General de Niños Pedro de Elizalde

    Buenos Aires, Buenos Aires F.D., 1270

    Active, not recruiting
  • Sanatorio Anchorena

    CABA, Buenos Aires F.D., 1425

    Active, not recruiting
  • Clínica Zabala

    Ciudad Autonoma de Buenos Aire

    Active, not recruiting
  • Hospital de Niños Dr. Ricardo Gutierrez

    Ciudad Autonoma de Buenos Aire

    Recruiting
  • Hospital Privado Centro Médico de Córdoba

    Córdoba, Córdoba Province, 5016

    Recruiting
  • Hospital de Niños de la Santísima Trinidad

    Córdoba, Córdoba Province

    Recruiting
  • Sanatorio Allende

    Córdoba

    Withdrawn
  • Hospital de niños Sor María Ludovica

    La Plata, Buenos Aires, 1900

    Recruiting
  • Clinica del niño y la madre

    Mar del Plata, Buenos Aires, 7600

    Recruiting
  • Hospital Interzonal Especializado Materno Infantil Don Victorio Tetamanti

    Mar del Plata, Buenos Aires

    Recruiting
  • Hospital Pediátrico Dr. Humberto Notti

    Mendoza, Mendoza Province

    Recruiting
  • Clínica Pediátrica San Lucas

    Neuquén, Neuquén Province, 8300

    Suspended
  • Sanatorio de la Trinidad Ramos Mejia

    Ramos Mejía, Buenos Aires

    Not yet recruiting
  • Hospital "San Antonio de Padua" Río Cuarto

    Río Cuarto, Córdoba Province, 5806

    Recruiting
  • Hospital de Niños Zona Norte "Dr. Roberto M. Carra"

    Rosario, Santa Fe Province, 2013

    Recruiting
  • Sanatorio de Niños

    Rosario, Santa Fe Province

    Recruiting
  • Hospital Público Materno Infantil

    Salta, Salta Province, 4400

    Recruiting
  • Hospital El Cruce

    San Juan Bautista, Buenos Aires

    Not yet recruiting
  • Hospital Pediátrico San Luis

    San Luis, San Luis Province, 5700

    Recruiting
  • Hospital De Clínicas Pte. Nicolás Avellaneda

    San Miguel de Tucumán, Tucumán Province, 4001

    Active, not recruiting
  • Hospital Teodoro J. Schestakow

    San Rafael, Mendoza Province, 5600

    Recruiting

Other trials in Argentina

France8 sites, 4 recruiting
  • CHU De Bordeaux

    Bordeaux

    Active, not recruiting
  • Hospices Civils De Lyon - Hopital Femme Mere Enfant

    Lyon

    Recruiting
  • Centre Hospitalier Universitaire De Montpellier

    Montpellier

    Active, not recruiting
  • CHU Nantes

    Nantes

    Not yet recruiting
  • Hospital Necker Enfants Malades

    Paris

    Active, not recruiting
  • Robert Debre University Hospital

    Paris

    Recruiting
  • Trousseau Hospital

    Paris

    Active, not recruiting
  • CHU Rouen

    Rouen

    Not yet recruiting

Other trials in France

Italy5 sites, 5 recruiting
  • University Hospital Consorziale Policlinico

    Bari

    Recruiting
  • IRCCS Sant'Orsola

    Bologna

    Not yet recruiting
  • Istituto Gianina Gaslini

    Genova

    Recruiting
  • Fondazione IRCCS Ca Granda Ospedale Maggiore Policlinico

    Milan

    Recruiting
  • Azienda Ospedale Università

    Padova

    Not yet recruiting

Other trials in Italy

Germany3 sites, 3 recruiting
  • Charité - Universitätsmedizin Berlin

    Berlin

    Not yet recruiting
  • University Hospital Cologne AöR

    Cologne

    Not yet recruiting
  • Universitaetsklinikum Heidelberg AöR

    Heidelberg

    Recruiting

Other trials in Germany

Romania3 sites, 3 recruiting
  • Spitalul Clinic de Urgenta pentru Copii Marie Sklodowska Curie

    Bucharest

    Not yet recruiting
  • Spitalul Clinic De Urgenta Pentru Copii Cluj-Napoca

    Cluj-Napoca

    Recruiting
  • Spitalul Clinic de Urgenta pentru Copii Louis Turcanu

    Timișoara

    Not yet recruiting

Other trials in Romania

Spain3 sites, 3 recruiting
  • Hospital Universitario De Cruces

    Barakaldo

    Recruiting
  • Hospital Infantil Universitario Niño Jesus

    Madrid

    Recruiting
  • Hospital Universitario 12 De Octubre

    Madrid

    Recruiting

Other trials in Spain

United Kingdom3 sites, 3 recruiting
  • Bristol Royal Hospital for Children

    Bristol

    Not yet recruiting
  • Royal Hospital for Sick Children

    Glasgow, G51 4TF

    Recruiting
  • Great Ormon Street Hospital for Children

    London

    Not yet recruiting

Other trials in United Kingdom

Belgium1 site
  • Cliniques universitaires Saint-Luc

    Brussels

    Active, not recruiting

Other trials in Belgium

Ireland1 site
  • Children's Health Ireland

    Dublin

    Active, not recruiting

Other trials in Ireland

About this study

Official title: A Phase III Study to Evaluate the Efficacy of INM004 (Shiga Antitoxin) in Pediatric Patients With Shiga Toxin-producing Escherichia Coli-associated Hemolytic Uremic Syndrome.

The objectives of this study are to evaluate the efficacy, safety, and pharmacokinetics of INM004 in pediatric patients with Hemolytic Uremic Syndrome associated to infection by Shiga toxin-producing Escherichia coli (STEC-HUS).

Read the detailed description

The primary objective will be to evaluate the efficacy of INM004, added to the standard of care, as a treatment for STEC-HUS in the amelioration of renal function.

Secondary objectives

  • To evaluate the efficacy of INM004 in the reduction of mortality.
  • To evaluate the efficacy of INM004 in the prevention and reduction of extrarenal complications.
  • To evaluate the efficacy of INM004 in the improvement of TMA laboratory parameters.
  • To evaluate the efficacy of INM004 in the reduction of hospital stay days.
  • To evaluate the safety of INM004
  • To evaluate the pharmacokinetics of INM004
  • To evaluate the kinetics of Stx
Being tested
INM004, Placebo
Keywords
STEC-HUS, Typical Hemolytic Uremic Syndrome, Diarrhea asociated-Hemolytic Uremic Syndrome, Shiga toxin-producing Escherichia coli, Shiga toxin
Medical subject headings
Hemolytic-Uremic Syndrome

What participants receive

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

  • INM004Biological

    Also called Active

    Two doses of Anti-Shiga Toxin Hyperimmune Equine Immunoglobulin F(ab´)2 fragments at a dosage of 4 mg/kg of body weight, 24 hours apart. Each vial contains 25 mg of protein/ml. Therefore, each subject must receive 0.16 ml/kg per dose. The vial volume will be reconstituted in a 100 ml (for subjects with a body weight of 20 kg or more) or 50 ml (for subjects under 20 kg of body weight) infusion bag. It will be administered as an intravenous infusion using an infusion pump over a period of 50 minutes. In subjects with a BMI over 30 kg/m2, infusion will be performed over a period of 100 minutes

  • PlaceboOther

    Also called Control

    Two doses of placebo, 24 hours apart. The placebo solution has the same composition of excipients as INM004 without the active pharmaceutical ingredient, and its appearance is identical. Each subject must receive 0.16 ml/kg of placebo solution per dose. The vial volume will be reconstituted in a 100 ml (for subjects with a body weight of 20 kg or more) or 50 ml (for subjects under 20 kg of body weight) infusion bag. It will be administered as an intravenous infusion using an infusion pump over a period of 50 minutes. In subjects with a BMI over 30 kg/m2, infusion will be performed over a period of 100 minutes

Study groups in NCT06389474
Study groupRoleWhat they receive
INM004ExperimentalTwo doses of Anti-Shiga Toxin Hyperimmune Equine Immunoglobulin F(ab´)2 fragment at a dosage of 4 mg/kg of body weight, 24 hours apart.
Receives: Biological: INM004
PlaceboPlacebo comparatorTwo doses of saline solution, 24 hours apart.
Receives: Other: Placebo

What is being measured

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

  1. Time to recovery of renal function during the acute phase

    Time (days) to achieve a glomerular filtration rate greater than or equal to the lower limit of normal (according to age, height, and sex) and a serum creatinine lower than or equal to the upper limit of normal (according to age and sex), both measured in the absence of dialysis.

    Measured: 28 days

Secondary outcomes (5)
  1. Short-term recovery of renal function

    Proportion of subjects with a glomerular filtration rate ≥ lower limit of normal (according to age, height and sex) and serum creatinine ≤ upper limit of normal (according to age and sex), both measured in the absence of dialysis.

    Measured: 90 days

  2. MAKE 90

    Proportion of subjects meeting any of the following criteria at day 90: death, dialysis requirement after 24 hours post-randomization, dialysis of more than 10 days, or persistent decline in renal function (without recovery of glomerular filtration rate according to age, height, and sex).

    Measured: 90 days

  3. Dialysis longer than 10 days

    Proportion of dialyzed subjects requiring more than 10 days of dialysis

    Measured: 90 days

  4. Dialysis requirement

    Proportion of subjects requiring dialysis after 24 hours post-randomization

    Measured: 90 days

  5. Mortality

    Proportion of subjects who die from any cause.

    Measured: 90 days

Timeline

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

  1. First posted29 Apr 2024
  2. Study start5 Oct 2024
  3. Primary completion30 Aug 2026 (estimated)
  4. Study completion31 Dec 2026 (estimated)

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 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
Adaptive design. IA will be done when approximately 50% of the enrollment is reached and the participants have completed 28 days of follow-up. This analysis will not be blinded and will be carried out to declare futility or re-estimate the sample size. The re-estimation of the sample size will allow a maximum of 300 randomized subjects in total, but a reduction in the initial item size of 220 subjects is not expected. In case of re-estimating the sample size, the smallest sample size under 300 will be selected, which allows a power of ≥ 80%. %. If with 300 subjects, a power of 80% is not reached, but it is ≥ 50%, then the sample size is re-estimated to 300 subjects, as long as the conditional power of the IA is ≥ 50% (promising results)
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
220 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06389474
Sponsor's protocol ID
CT-INM004-04
Status last verified
Jan 2026
First submitted
25 Apr 2024
Last updated
15 Jan 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing INM004 in people with Hemolytic-Uremic Syndrome, run by Inmunova S.A. at 52 sites in 9 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 19 inclusion and 18 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: looking for participants now, as of the sponsor's last update on 15 Jan 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 52 sites in Argentina, France, Italy, Germany, Romania and 4 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 phase mean?

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?

This study is still under way. Results are not available in the source record yet.

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

Contact Mariana Colonna, Bioch (+541120331455 ext. 6184, mcolonna@inmunova.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Time to recovery of renal function during the acute phase (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 15 Jan 2026.

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