- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT06212336
ISTH/ANRS 0409s INTEGRATE Lassa Fever Study
Efficacy, Tolerability and Safety of New or Repurposed Drugs Against Lassa Fever in West African Countries
Lassa fever (LF) is a viral haemorrhagic fever responsible of 5000 deaths per year in West Africa, with in-hospital mortality at 12%. Transmission to humans occurs mainly via direct or indirect exposure to excreta from the rodent reservoir, mainly made up of Mastomys natalensis . Less frequently, LASV may also be transmitted from human to human and cause nosocomial outbreaks. Ribavirin is the only treatment available with worrying toxicity, questionable efficacy and low access because of its high cost. Consequently, there is an urgent need for new drugs to treat LF patients. The Research and Development (R&D) Blueprint of the World Health Organization (WHO) has included LF in the list of priority diseases for urgent research and development.
The INTEGRATE consortium is an unprecedented international collaboration on Lassa fever of 15 partners from 10 countries across West Africa, Europe and North America and across several disciplines (epidemiological researchers, social scientists, medical health facility professionals, humanitarian actors, etc.).
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
The INTEGRATE study is a platform, multinational, multicentre, sequential, seamless phase II-III, controlled, randomised, superiority trial in open-label parallel arms. Three arms will be assessed and compared to the SCD. Its primary objective is to compare the efficacy of each Investigational Medical Product (IMP) to Standard of Care Drug (SCD) to prevent death or organ failure in hospitalized patients with confirmed LF. Secondary objectives will be i) to compare the safety and tolerability of each IMP and SCD, ii) to compare the efficacy of each IMP and SCD on clinical, virological and biological parameters, iii) to describe the pharmacokinetics of each IMP and iv) to develop a pharmacokinetics / pharmacodynamics model for each IMP informing about optimal dosing regimens and dose-response relationship.
Objectives
1.1 Primary objective The primary objective of the trial is to compare the efficacy of each IMP and SCD to prevent death or organ failure in hospitalized participants with confirmed LF.
1.2. Secondary objectives
- To compare the safety and tolerability of each IMP and SCD
- To compare the efficacy of each IMP and SCD on clinical, virological and biological parameters
- To describe the pharmacokinetics of each IMP
- To develop a pharmacokinetics / pharmacodynamics model for each IMP informing about optimal dosing regimens and dose-response relationship
Design
- Phase II: comparative controlled design
- Phase III: Whitehead's sequential double triangular design
Sample size:
In the current version of the protocol (if all sub-protocols start at once):
- 3 IMPs go into phase III: N= 732
- 2 IMPs go into phase III: N= 585
- 1 IMP go into phase III: N= 438
Duration
- Hospitalization: 10 days
- Follow-up: 28 days
Study Type
Enrollment (Estimated)
Phase
- Phase 2
- Phase 3
Contacts and Locations
Study Contact
- Name: Camille FRITZELL, PHD
- Phone Number: +33 6 58 80 90 12
- Email: camille.fritzell@coral.alima.ngo
Study Contact Backup
- Name: Sylvain JUCHET
- Phone Number: +33 6 58 80 90 12
- Email: sylvain.juchet@coral.alima.ngo
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Adult
- Older Adult
Accepts Healthy Volunteers
Description
General
Inclusion criteria
- Clinical disease with signs and symptoms suggestive for LF
- Positive plasma LASV RT-PCR
- Participant requires hospitalization per the local guidelines
- Participant or their legally authorized representative is able and willing to sign the informed consent
Exclusion criteria
• Unwilling to provide informed consent
• Positive pregnancy test
- Unwilling to provide informed consent
- History of allergic reaction or other contra-indication to ribavirin according to the Reference safety document
- Received drug therapy for Lassa fever (excluding supportive care) prior to inclusion
- Has received a vaccine against LF
Sub-protocols
2.1 Favipiravir high dose sub-protocol
Inclusion criteria
• Age ≥ 18 years old
Exclusion criteria
• Pregnancy (evidenced by positive urine pregnancy test in women of child-bearing potential)
• Treatment contraindicated with favipiravir according to the Reference safety document
• Pre-existing liver failure
- Severe symptomatic gout/hyperuricemia
- History of QT prolongation or arrhythmia or other cardiac disorders
- PR interval ≥ 200 ms
- Hypersensitivity to excipients
- Inability to take oral drug (e.g. encephalopathy, severe vomiting)
2.2. Favipiravir-Ribavirin sub-protocol
Inclusion criteria
• Age ≥ 18 years old
Exclusion criteria
• Pregnancy (evidenced by positive urine pregnancy test in women of child-bearing potential)
• Treatment contraindicated with favipiravir according to the Reference safety document
• Pre-existing liver failure
• Severe symptomatic gout/hyperuricemia
• History of QT prolongation or arrhythmia or other cardiac disorders
• PR interval ≥ 200 ms
• Hypersensitivity to excipients
• Inability to take oral drug (e.g. encephalopathy, severe vomiting)
2.3. Dexamethasone sub-protocol
Inclusion criteria
• Age ≥ 12 years old
Exclusion criteria
- Pregnancy (evidenced by positive urine pregnancy test in women of child-bearing potential)
- Known intolerance and contra-indications to ribavirin or dexamethasone
- Patients who already received a corticosteroid within the preceding 7 days
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Sequential Assignment
- Masking: Triple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Favipiravir 1600
Oral favipiravir: 2400 mg BID D1; 1600 mg BID D2-D10
|
Control arm
Other Names:
|
Active Comparator: Ribavirin
Intravenous ribavirin (Irrua regimen - 100 mg/kg Day 1 (dose is divided: 2/3 stat, 1/3 8 hours later, maximum dose is 7g/day) then 25 mg/kg single dose days 2-7, 12.5 mg/kg single dose days 8-10).
|
Interventional Medicinal Product (IMP)
|
Experimental: Favipiravir 1200 + ribavirin
Oral favipiravir: 2400 mg BID D1; 1200 mg BID D2-D10 Intravenous ribavirin (Irrua regimen - 100 mg/kg Day 1 (dose is divided: 2/3 stat, 1/3 8 hours later, maximum dose is 7g/day) then 25 mg/kg single dose days 2-7, 12.5 mg/kg single dose days 8-10).
|
Control arm
Other Names:
Interventional Medicinal Product (IMP)
|
Experimental: Ribavirin + dexamethasone
IV ribavirin, Irrua regimen IV or oral dexamethasone 6mg/day (For the first 48 hours, dexamethasone will be given intravenously (i.
Afterwards, a switch to oral dexamethasone (same dosage) is permitted at the discretion of the study physician.)
|
Control arm
Other Names:
Interventional Medicinal Product (IMP)
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Death
Time Frame: Day 28
|
Proportion of participants death definition by Y/N measure Clinical aggravation is defined as the first occurrence of one of the following conditions, at any time point between baseline and Day 14 (included): Death, or Increase (+1 or +2) in the number (0, 1 or 2) of organ failures among: Renal failure: KDIGO stage 3 Respiratory failure: SpO2/FiO2* ≤ 315 Cardiovascular failure: MBP** < 65 mmHg or SBP < 90 mmHg (measured twice with a time interval of 10 min) and lactate > 2 mmol/L Analysis per component Proportion of participants with a newly occurring component of the composite primary endpoint between Day 0 and Day 14. Sensitivity analyses Proportion of participants presenting no clinical aggravation between baseline and Day 14, with varying thresholds on the definitions of organ failures or adding different organ failures definition (e.g. neurologic, hepatic, hematologic, etc.). |
Day 28
|
New onset of acute kidney failure
Time Frame: Between Day 0 and Day 10
|
Proportion of participants a new onset of acute kidney failure . Definition by KDIGO 3 measure. 3.0 times baseline, OR increase in serum creatinine to ≥4.0 mg/dl (≥353.6 mmol/l). The composite endpoint assesses the new onset of an event from D0 |
Between Day 0 and Day 10
|
New onset of acute respiratory failure
Time Frame: Between Day 0 and Day 10
|
Proportion of participants a new onset of acute respiratory failure.
Definition by SpO2/FiO2 ≤ 315 measure The composite endpoint assesses the new onset of an event from D0
|
Between Day 0 and Day 10
|
New onset of shock
Time Frame: Between Day 0 and Day 10
|
Proportion of participants a New onset of shock.
Mean Blood Pressure (MBP) < 65 mmHg or Systolic Blood Pressure (SBP) < 90 mmHg (measured twice with a time interval of 10 min) and lactate > 2 mmol/L measured at the same time The composite endpoint assesses the new onset of an event from D0
|
Between Day 0 and Day 10
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Safety of each IMP and SCD
Time Frame: Between Day 0 and Day 10
|
Proportion (events and participants with at least one event) of:
|
Between Day 0 and Day 10
|
Safety of each IMP and SCD
Time Frame: Day 0, Day 28
|
Proportion (events and participants with at least one event) of: Adverse Event* grade 3 and higher
|
Day 0, Day 28
|
Organ failure from composite primary endpoint
Time Frame: Between Day 0 and Day 10
|
Proportion of participants with a newly occurring component of the composite primary endpoint
|
Between Day 0 and Day 10
|
Acute Kidney Injury
Time Frame: Between Day 0 and Day 10
|
Proportion of participants meeting KDIGO ≥ 2 or initiation of renal replacement therapy parameters
|
Between Day 0 and Day 10
|
Encephalopathy
Time Frame: Between Day 0 and Day 10
|
Proportion of participants with CVPU or seizure
|
Between Day 0 and Day 10
|
Bleeding
Time Frame: Between Day 0 and Day 10
|
Proportion of participants meeting WHO bleeding scale grade 2 or above
|
Between Day 0 and Day 10
|
Severe anaemia
Time Frame: Between Day 0 and Day 10
|
Proportion of participants with Hb level < 80 g/L
|
Between Day 0 and Day 10
|
Liver failure
Time Frame: Between Day 0 and Day 10
|
Proportion of participants with AST or ALT ≥ 3 N
|
Between Day 0 and Day 10
|
Clinical severity score
Time Frame: Between Day 0 and Day 10
|
Proportion of participants with a NEWS2 score > 7
|
Between Day 0 and Day 10
|
Intensive care strategies - oxygen therapy
Time Frame: Between Day 0 and Day 10
|
Proportion of participants having received oxygen therapy
|
Between Day 0 and Day 10
|
Intensive care strategies - RRT
Time Frame: Between Day 0 and Day 10
|
Proportion of participants having received RRT
|
Between Day 0 and Day 10
|
Intensive care strategies - blood transfusion
Time Frame: Between Day 0 and Day 10
|
Proportion of participants having received blood transfusion
|
Between Day 0 and Day 10
|
Intensive care strategies- inotropes
Time Frame: Between Day 0 and Day 10
|
Proportion of participants having received inotropes
|
Between Day 0 and Day 10
|
the viral clearance - Change in LF RT-PCR Ct
Time Frame: Day 3, Day 5, Day 7, Day 9
|
value (for each target gene) from D0
|
Day 3, Day 5, Day 7, Day 9
|
the viral clearance - Change in LASV viral
Time Frame: Day 3, Day 5, Day 7, Day 9
|
titer from D0
|
Day 3, Day 5, Day 7, Day 9
|
viral clearance - LASV RT-PCR
Time Frame: Day 3, Day 5, Day 7, Day 9
|
<LLQ
|
Day 3, Day 5, Day 7, Day 9
|
Pharmacokinetics (phase II only)
Time Frame: Between Day 0 and Day 10
|
• Peak concentration (Cmax)
|
Between Day 0 and Day 10
|
Pharmacokinetics (phase II only)
Time Frame: Between Day 0 and Day 10
|
• Time to peak concentration (Tmax)
|
Between Day 0 and Day 10
|
Pharmacokinetics (phase II only)
Time Frame: Between Day 0 and Day 10
|
• Area under the curve
|
Between Day 0 and Day 10
|
Pharmacokinetics (phase II only)
Time Frame: Between Day 0 and Day 10
|
• Half-life
|
Between Day 0 and Day 10
|
Pharmacokinetics (phase II only)
Time Frame: Between Day 0 and Day 10
|
• Clearance
|
Between Day 0 and Day 10
|
Pharmacokinetics (phase II only)
Time Frame: Between Day 0 and Day 10
|
• Volume(s) of distribution
|
Between Day 0 and Day 10
|
PK/PD (phase II only)
Time Frame: Between Day 0 and Day 10
|
• Prediction of initial viral load and slope of decline
|
Between Day 0 and Day 10
|
PK/PD (phase II only)
Time Frame: Between Day 0 and Day 10
|
• Optimal dosing regimen with PK/PD modelling
|
Between Day 0 and Day 10
|
Other Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Viral resistance parameters
Time Frame: Between Day 0 and Day 10
|
Frequency of LASV resistance mutations
|
Between Day 0 and Day 10
|
Collaborators and Investigators
Collaborators
Investigators
- Study Director: Marie MD JASPARD, MD, ALIMA - The Alliance for International Medical Action - Paris, France
- Principal Investigator: Sylvanus OKOGBENIN, MD, Irrua Specialist Teaching Hospital Irrua - Edo State, Nigeria
- Study Chair: Michael RAMHARTER, MD, Bernhard Nocht Institute for Tropical Medicine Bernhard-Nocht-Hamburg, Germany
Study record dates
Study Major Dates
Study Start (Estimated)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- RNA Virus Infections
- Virus Diseases
- Infections
- Body Temperature Changes
- Hemorrhagic Fevers, Viral
- Arenaviridae Infections
- Fever
- Lassa Fever
- Physiological Effects of Drugs
- Molecular Mechanisms of Pharmacological Action
- Anti-Infective Agents
- Autonomic Agents
- Peripheral Nervous System Agents
- Antiviral Agents
- Anti-Inflammatory Agents
- Antimetabolites
- Antineoplastic Agents
- Antiemetics
- Gastrointestinal Agents
- Glucocorticoids
- Hormones
- Hormones, Hormone Substitutes, and Hormone Antagonists
- Antineoplastic Agents, Hormonal
- Favipiravir
- Dexamethasone
- Ribavirin
Other Study ID Numbers
- ISTH/ANRS 0409s INTEGRATE
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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