Demo·seeded data·not investment advice
BioSight
CMCCMC Milestone

LEQEMBI Subcutaneous Maintenance Launch

BIIB·LEQEMBI·Alzheimer's Disease·
current best date
JUL 25
2026
EXACT3 months
Takeaway

U.S. commercial launch of the IQLIK at-home autoinjector for LEQEMBI Alzheimer’s maintenance dosing. Replaces every-2-week IV infusions for patients past the 18-month induction phase. Watch: weekly TRx, payor coverage, infusion-center vs. home channel mix.

What’s at stake

market · comparables · base rate · prior moves
Market opportunity
company filings
Peer comparables
1 readout
ClinicalTrials.gov
Stage base rate
~100%
BIO Industry Analysis 2023 (2011–2020)
Avg prior-readout move
historical price reactions
Drug
mAb
LEQEMBI
lecanemab · INN
MoAhumanized anti-amyloid beta protofibril mAb

LEQEMBI (lecanemab) is a humanized monoclonal antibody co-developed by Biogen and Eisai that targets and clears amyloid-beta protofibrils — a soluble, toxic form of amyloid thought to drive early Alzheimer's neurodegeneration. By reducing amyloid burden in the brain, it slows the rate of clinical decline in patients with mild cognitive impairment or mild Alzheimer's dementia. LEQEMBI received full FDA approval in 2023 as the first anti-amyloid therapy to demonstrate statistically significant slowing of functional decline in a Phase 3 trial; it is given by IV infusion every two weeks, with an at-home autoinjector in development for the maintenance phase.

Indication
Neurology
Alzheimer's Disease
MeSH · D000544

No primer in glossary yet.

Source signal

This event was extracted from a primary disclosure. The full chain of citations is in the disclosure trail below.

Competitive landscape

2 peers in Neurology · ranked by indication + modality match
DrugCompanyModalityMechanismPhaseNext catalyst
ZURZUVAEzuranoloneSAGEsmall moleculepositive allosteric modulator of GABA-AENROLLMENT · Jun 26
AUVELITYdextromethorphan-bupropionAXSMsmall moleculeNMDA antagonist + sigma-1 agonistREADOUT · May 26

Disclosure trail

1 observation · sorted by confidence
  1. Apr 12, 2026·18d agopinned · highest confidence
    HIGH confPR
    top claim
    JUL 252026
    EXACT
    Subcutaneous LEQEMBI maintenance dosing is on track for U.S. commercial launch on July 25, 2026, following recent FDA approval of the IQLIK autoinjector.
    conf 94%via llm

MethodologyEvery catalyst date is anchored to a primary source. Disclosures with confidence ≥ 0.85 auto-publish; the rest are reviewed by a human within 24 hours. We never interpret data — we organize public information.

Disclaimer·BioSight aggregates publicly available data (SEC EDGAR, ClinicalTrials.gov, FDA, company press releases) and is provided as is for informational purposes only. Nothing here is investment, financial, legal, tax, or medical advice, or an offer to buy or sell any security. We make no warranty as to accuracy, completeness, or timeliness; dates and filings may contain errors or be superseded without notice; past events do not predict future outcomes. To the maximum extent permitted by law, BioSight, its operators, contributors, and affiliates disclaim all liability for any loss or damage arising from use of or reliance on this site. You are solely responsible for your own investment decisions — consult a licensed professional before acting on any information.

Unlock 12-month calendar