TheraRadar
Data updated: May 26, 2026

LEQEMBI IQLIK (lecanemab-irmb)

Amyloid Beta-directed Antibody Interactions
CNS Approved 2025-08-29

LEQEMBI IQLIK is indicated for the treatment of Alzheimer's Disease.

Source: FDA Label • EISAI INC • Amyloid Beta-directed Antibody

How LEQEMBI IQLIK Works

Lecanemab-irmb is a humanized immunoglobulin gamma 1 (IgG1) monoclonal antibody directed against aggregated soluble and insoluble forms of amyloid beta. The accumulation of amyloid beta plaques in the brain is a defining pathophysiological feature of Alzheimer’s disease. By targeting these aggregates, LEQEMBI reduces the presence of amyloid beta plaques in the brain.

1
Indication
--
Phase 3 Trials
0
Years on Market

Details

Status
Prescription
First Approved
2025-08-29
Routes
SUBCUTANEOUS
Dosage Forms
INJECTABLE

Companies

Active Ingredient: LECANEMAB-IRMB

LEQEMBI IQLIK Approval History

2026
Original
New Indication
New Form
Label Update
1 FDA actions from 2025 to 2025
Aug 2025 ORIGINAL
Update

What LEQEMBI IQLIK Treats

1 indications

LEQEMBI IQLIK is approved for 1 conditions since its original approval in 2025. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Alzheimer's Disease
Source: FDA Label

LEQEMBI IQLIK Boxed Warning

AMYLOID RELATED IMAGING ABNORMALITIES Monoclonal antibodies directed against aggregated forms of beta amyloid, including LEQEMBI, can cause amyloid related imaging abnormalities (ARIA), characterized as ARIA with edema (ARIA-E) and ARIA with hemosiderin deposition (ARIA-H). Incidence and timing of ARIA vary among treatments. ARIA usually occurs early in treatment and is usually asymptomatic, although serious and life-threatening events can occur. ARIA can be fatal. Serious intracerebral hemorrha...

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Trial Timeline

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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.

LEQEMBI IQLIK FDA Label Details

Indications & Usage

FDA Label (PDF)

LEQEMBI IQLIK is indicated for the treatment of Alzheimer's Disease.

⚠️ BOXED WARNING

WARNING: AMYLOID RELATED IMAGING ABNORMALITIES Monoclonal antibodies directed against aggregated forms of beta amyloid, including LEQEMBI, can cause amyloid related imaging abnormalities (ARIA), characterized as ARIA with edema (ARIA-E) and ARIA with hemosiderin deposition (ARIA-H). Incidence and ti...

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Data Sources

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