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Data updated: Mar 10, 2026

INMAZEB

ATOLTIVIMAB
Infectious Disease Approved 2020-10-14

INMAZEB is a combination of three human monoclonal antibodies indicated for the treatment of infection caused by Orthoebolavirus zairense. The treatment is approved for use in adult and pediatric patients, including neonates born to mothers who are RT-PCR positive for the virus. Its therapeutic role is specific to this species, as efficacy has not been established for other members of the Orthoebolavirus or Orthomarburgvirus genera. Clinical use should take into account available information on drug susceptibility patterns, as viral evolution or resistance may diminish the drug's effectiveness.

Source: FDA Label • Regeneron

How INMAZEB Works

INMAZEB is an antiviral combination composed of three recombinant human IgG1κ monoclonal antibodies: atoltivimab, maftivimab, and odesivimab. These antibodies are directed against the Orthoebolavirus zairense glycoprotein. By targeting this specific viral component, the monoclonal antibody combination works to inhibit the Orthoebolavirus zairense pathogen.

Source: FDA Label
1
Indication
--
Phase 3 Trials
1
Priority Reviews
5
Years on Market

Details

Status
Prescription
First Approved
2020-10-14
Routes
INJECTION
Dosage Forms
SOLUTION

Companies

Active Ingredient: ATOLTIVIMAB , ODESIVIMAB , MAFTIVIMAB

INMAZEB Approval History

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What INMAZEB Treats

1 indications

INMAZEB is approved for 1 conditions since its original approval in 2020. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Orthoebolavirus zairense Infection
Source: FDA Label
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Active Pipeline

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Ongoing clinical trials by development phase

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Key Completed Trials

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Completed studies with published results, ranked by significance

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Trial Timeline

Full development history with FDA approval milestones

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Understanding FDA Approval Types
Count Type What it means
- ORIG Original approval - drug first enters market
- SUPPL - Efficacy New indication (new disease/condition approved)
- SUPPL - Labeling Label text changes (warnings, dosing updates)
- SUPPL - Manufacturing Production changes (new facility)
- SUPPL - Chemistry Formulation changes (new dosage strength)

Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.

INMAZEB FDA Label Details

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Indications & Usage

FDA Label (PDF)

INMAZEB is indicated for the treatment of infection caused by Orthoebolavirus zairense in adult and pediatric patients, including neonates born to a mother who is RT-PCR positive for Orthoebolavirus zairense infection [see Dosage and Administration , and Clinical Studies ] . INMAZEB is a combination of Orthoebolavirus zairense glycoprotein-directed human monoclonal antibodies (atoltivimab, maftivimab, and odesivimab), indicated for the treatment of infection caused by Orthoebolavirus zairense in adult and pediatric patients, including neonates born to a mother who is RT-PCR positive for Orthoe...

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Data Sources

Data sourced from official FDA and NIH databases. Click links to verify on original sources.