Evidence map›Paper›PMID 41160347›Full record

Observational studyDrugs & aging2026

Initial Real-World Evidence for Lecanemab in the United States.

Diana I Brixner, Chenyue Zhao, Hideki Toyosaki, Feride H Frech, Michael H Rosenbloom

Abstract readObservational Study
In one paragraph

Observational study in Drugs & aging, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

5 citing papers in PubMed.

  1. Article
  2. Further data to address the Alzheimer's coverage with evidence development questions.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Review
  3. Article
  4. Article
  5. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Diana I BrixnerDepartment of Pharmacotherapy, University of Utah College of Pharmacy, Salt Lake, UT, USA.
Chenyue ZhaoEisai Inc., Nutley, NJ, USA. chenyue_zhao@eisai.com.
Hideki ToyosakiEisai Inc., Nutley, NJ, USA.
Feride H FrechEisai Inc., Nutley, NJ, USA.
Michael H RosenbloomMemory and Brain Wellness Center, University of Washington, Seattle, WA, USA.

Funding

University of Washington Alzheimer's Disease Research CenterP30AG066509 · NIA · UNIVERSITY OF WASHINGTON · PI Amanda D. Boyd · 2020 to 2026
$29.0M
NIA NIH HHS P30 AG066509
6 · The paper itself

Abstract

backgroundLecanemab is the first anti-amyloid monoclonal antibody with full approval in the US for the treatment of early Alzheimer's disease (AD). This observational study aimed to provide information about patient demographics, clinical characteristics, provider specialty, and lecanemab utilization patterns.

methodsThis observational study used open administrative claims from the PurpleLab, a database encompassing medical and pharmacy claims derived from diverse sources, such as clearinghouses and Pharmacies. We included patients receiving one or more lecanemab doses between January 6, 2023 and October 31, 2024, and having continuous clinical activity ≥ 6 months prior to the first lecanemab infusion. The observation period ran from the first lecanemab infusion to the latest clinical activity or data availability. Treatment gaps were calculated as the number of gap days in lecanemab supply between consecutive infusions.

resultsAmong the study population (n = 4261), mean age was 75.2 years, 77.8% were White, 98.4% lived in urban settings, 81.7% were treated by neurologists, 77.3% had AD, and 31.7% had mild cognitive impairment. Mean follow-up period was 171.1 days. Lecanemab infusions averaged 1.9 per patient per month (SD 1.0), 16.3 days apart (SD 11.0), and 2.8% of patients experienced a treatment interruption ≥90 days.

conclusionsLecanemab utilization followed US FDA-approved prescribing information. Disparities for minority and rural-based populations were observed suggesting opportunities to improve access for underserved populations.

Indexed as

Alzheimer DiseaseAntibodies, Monoclonal, HumanizedAgedAged, 80 and overFemaleHumansMaleMiddle AgedUnited StatesAntibodies, Monoclonal, Humanized

Identifiers

PMID41160347
PMCPMC12855276

What Socratic holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.