New treatment options for hospitalized people with Lassa fever in West Africa
Official title: Efficacy, Tolerability and Safety of New or Repurposed Drugs Against Lassa Fever in West African Countries
Run by Irrua Specialist Teaching Hospital · NCT06212336 · Data updated 2026-11-12
This trial will try several antiviral and supportive drugs to see which works best to prevent death or organ failure in people hospitalized with confirmed Lassa fever.
Quick facts
| Phase | Phase2; Phase3 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 1755 (estimated) |
| Sponsor | Irrua Specialist Teaching Hospital Academic / other |
| Locations | 4 sites (Suacoco, Bong County and 3 other locations) |
| Status | Recruiting |
| Started | May 2, 2025 |
| Main results expected | June 2027 |
| Study ends | June 2027 |
| Registry record updated | February 4, 2026 |
| Trial ID | NCT06212336 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Hospitalized adolescents and adults with PCR-confirmed Lassa fever who meet local hospitalization criteria and can provide informed consent (or have a legally authorized representative) are eligible.
✕Probably not a fit
People who are pregnant, have contraindications to the study drugs, have already received specific anti-Lassa drug therapy before enrollment, or have received an LF vaccine are unlikely to benefit from joining this trial.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
INTEGRATE is a multinational, multicentre, randomized, open-label platform that moves seamlessly from phase II to phase III to compare multiple investigational drugs against standard of care in hospitalized Lassa fever patients. Participants are randomized to one of several arms including favipiravir, ribavirin, dexamethasone, or high- and low-dose ARN-75039, with outcomes compared to the local standard-of-care drug. The primary outcome is prevention of death or organ failure, while secondary work includes safety, virology, biological markers, and pharmacokinetic/pharmacodynamic modelling to guide dosing. The trial is conducted at participating hospitals in West Africa with coordination among academic and clinical partners.
Why it matters
Potential benefit: If successful, the trial could identify safer and more effective treatments that reduce deaths and organ failure from Lassa fever.
How similar studies have gone: Ribavirin is the only widely used treatment but has limited and uncertain evidence, while antivirals like favipiravir and ARN-75039 have shown promise in preclinical work and small studies but lack definitive phase II/III proof in humans.
Who can join: the full rules
Show full inclusion / exclusion criteria
1. 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 2. 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 2.4 ARN-75039 subprotocols Exclusion criteria • History of severe gastrointestinal disease • History of chronic generalized pruritus * History of severe chronic liver disease * History of severe cardiac disorder
Where it's running
-
Irrua Specialist Teaching Hospital
Irrua, Edo, Nigeria Recruiting -
Federal Medical Center Owo
Owo, Ondo State, Nigeria Recruiting -
Phebe Hospital
Suacoco, Bong County, Liberia Not yet recruiting -
Abubakar Tafawa Balewa University Teaching Hospital
Bauchi, Nigeria Not yet recruiting
Study contacts
- Principal investigator: Sylvanus OKOGBENIN, MD — Irrua Specialist Teaching Hospital Irrua - Edo State, Nigeria
- Study coordinator: Camille FRITZELL, PHD
- Email: camille.fritzell@coral.alima.ngo
- Phone: +33 6 58 80 90 12
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
-
MOPEVAC-Las vaccine in healthy adults to test safety and immune response for Lassa fever
A small study in healthy adults checks if MOPEVAC-Las is safe and can trigger an immune response, trying different dose levels.
-
Using Dexamethasone to Treat Lassa Fever
This study is testing if adding dexamethasone to the standard treatment for moderate to severe Lassa fever can help patients feel better and recover more effectively.
-
Lassa Fever Vaccine for Adults and Children in West Africa
This study is testing a new vaccine for Lassa fever in adults and children in West Africa to see if it's safe and effective at different doses.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.