Home › Research › Treatments
Lecanemab Treatment in a Specialty Memory Clinic
Paczynski M, Hofmann A, Posey Z, Gregersen M, Rudman M, Ellington D, Aldinger M, Musiek ES, Holtzman DM, Bateman RJ, et al.. JAMA Neurology, 2025-07-01
Topic: Risk, prevention and care in population studies
The most significant adverse events associated with these therapies are infusion-related reactions and amyloid-related imaging abnormalities (ARIA) with edema/effusion (ARIA-E) and/or hemorrhage/hemosiderin deposition (ARIA-H). Results The 234 patients treated with lecanemab had a mean age of 74.4 (SD, 6.7) years, 117 were female (50%), and 117 were male (50%). Overall, 23 of 234 patients (9.8%) withdrew from treatment for various reasons, 10 for ARIA (4.3%). The frequency of significant adverse events, including ARIA, was manageable. These results may inform discussions about the risks of anti-amyloid treatments.
Key findings
- The most significant adverse events associated with these therapies are infusion-related reactions and amyloid-related imaging abnormalities (ARIA) with edema/effusion (ARIA-E) and/or hemorrhage/hemosiderin deposition (ARIA-H).
- Results The 234 patients treated with lecanemab had a mean age of 74.4 (SD, 6.7) years, 117 were female (50%), and 117 were male (50%).
- Overall, 23 of 234 patients (9.8%) withdrew from treatment for various reasons, 10 for ARIA (4.3%).
- The frequency of significant adverse events, including ARIA, was manageable.
- These results may inform discussions about the risks of anti-amyloid treatments.
Why it matters
In this memory clinic cohort of 234 patients treated with lecanemab, the frequency of significant adverse events, including ARIA, was manageable. These results may inform discussions about the risks of anti-amyloid treatments.
New to this subject? Start with our plain-English guide: Treatments →
Study details
- Study designcohort
- Participants234
- Effect sizeARIA 22%; symptomatic ARIA 5.7% overall, 27% in mild dementia vs 1.8% in MCI/very mild dementia
- Evidence strengthModerate
Limitations
Single academic centre with extensive infrastructure; retrospective; mean follow-up only 6.5 months; no comparison group.
How this study scored 71/100
Published in a leading specialty journal, and it is a cohort study following people over time. Scored zero for randomised / blinded because the record does not state it. We have no data on free to read, so that was left out: it earned 70 of the 98 points we could judge it on, which is 71 out of 100.
| Component | Points | Why |
|---|---|---|
| Journal tier | 9 / 10 | Tier 2 — leading specialty journal (JAMA Neurology) |
| Journal's citation record | 2 / 4 | JAMA Neurology: journal h-index 235 (OpenAlex, 2026-10-29) |
| Study design | 7 / 12 | A cohort study following people over time |
| Strength of evidence | 3 / 5 | Rated “moderate” in our summary |
| Peer-review validation | 10 / 10 | Peer-reviewed. Published as an article in a named peer-reviewed journal. |
| How recent | 4 / 5 | 2025 — within 3 year(s) of the newest study here |
| Sample size | 2 / 4 | 234 participants |
| Effect reported | 2 / 3 | Effect reported as a number, without an interval or test |
| Studied in people | 3 / 3 | Studied in people (participant count stated) |
| Randomised / blinded | 0 / 2 | No randomisation or blinding stated — scores zero (not stated in the record — scored 0) |
| Times cited | 5 / 7 | Cited 106 times (OpenAlex, 2026-10-10) |
| Citations per year | 4 / 5 | 35.3 citations a year over 3 year(s) since 2025 |
| Impact for its field and year | 6 / 6 | Cited 57.9× the average for papers of its field and year (OpenAlex FWCI) |
| Cited by studies here | 3 / 6 | Cited by 11 other studies in this library |
| Still being cited | 3 / 4 | Cited 106 times in 2024–2026 (2026 still in progress; OpenAlex) |
| Senior author's track record | 2 / 4 | Last-listed author B. Joy Snider: h-index 28 (OpenAlex, whole career) |
| Institution's track record | 2 / 3 | Washington University in St. Louis: institution h-index 1,962 (OpenAlex) |
| Multi-centre collaboration | 1 / 3 | OpenAlex lists 2 institution(s) in 1 country |
| Indexed in PubMed | 2 / 2 | Indexed in PubMed (PMID 40354064) |
| Free to read | — / 2 | Access not recorded — left out of this score |
| Points | 70 / 98 | Scored on 19 of 20 parts. We have no data for the rest, so they are left out: 70 of the 98 points we could judge it on is 71 out of 100. |
| Total | 71 / 100 | — |
What each of these 20 components measures, and what this score is not →
Read the original
- DOI: 10.1001/jamaneurol.2025.1232
- PubMed: 40354064
- Original source →
- Free full text: PubMed Central →
Full text: free to read — PubMed Central lists this copy as free to read: the link above (checked 10 Oct 2026).
Cite this study APA, Vancouver, BibTeX · download .bib or .ris
Built from the record alzhub holds for this paper, not looked up. Volume, issue and page numbers are not held in the record. The record's author list ends in “et al.”, so not every author is named. Check the citation against the original before you use it.
APA 7th
Paczynski, M., Hofmann, A., Posey, Z., Gregersen, M., Rudman, M., Ellington, D., et al. (2025). Lecanemab Treatment in a Specialty Memory Clinic. JAMA Neurology. https://doi.org/10.1001/jamaneurol.2025.1232
Vancouver
Paczynski M, Hofmann A, Posey Z, Gregersen M, Rudman M, Ellington D, et al. Lecanemab Treatment in a Specialty Memory Clinic. JAMA Neurology. 2025. doi:10.1001/jamaneurol.2025.1232. PMID: 40354064.
BibTeX
@article{paczynski2025-40354064,
author = {Paczynski, M. and Hofmann, A. and Posey, Z. and Gregersen, M. and Rudman, M. and Ellington, D. and Aldinger, M. and Musiek, E. S. and Holtzman, D. M. and Bateman, R. J. and others},
title = {{Lecanemab Treatment in a Specialty Memory Clinic}},
journal = {JAMA Neurology},
year = {2025},
doi = {10.1001/jamaneurol.2025.1232},
pmid = {40354064},
url = {https://doi.org/10.1001/jamaneurol.2025.1232}
}
Studies this one cites
Referenced by this study and also in the alzhub library, so you can read them here. Showing 12 of 19.
Later studies that cite this one
11 studies in the alzhub library list this one in their references. Showing the 8 highest-scoring.