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29 - A Fatal Case of Multiple Brain Hemorrhages Associated with Lecanemab

Published online by Cambridge University Press:  19 January 2024

Daniel Gibbs
Affiliation:
Emeritus of Oregon Health and Science University
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Summary

However, there is a darker side to anti-amyloid monoclonal antibodies including lecanemab. ARIA, an acronym for amyloid-related imaging abnormalities, have occurred in all trials of anti-amyloid MABs. They occur in two forms, swelling (edema) of the brain (ARIA-E) and microhemorrhages (ARIA-H). Most of the time they are harmless and without symptoms, and they usually resolve within a month or two after stopping the drug. Rarely, they can be severe. As described in a case study, I was one of the subjects in the aducanumab trial who had severe ARIA of both types, swelling and bleeding. I required ICU care for two days, but I eventually fully recovered over the next few months. So far, three research subjects have died during the lecanemab clinical trial.

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Chapter
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Publisher: Cambridge University Press
Print publication year: 2024

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References

AHEAD Study. Lecanemab for people with increased risk of Alzheimer’s disease. www.alzheimers.gov/clinical-trials/ahead-study-ban2401-people-increased-risk-alzheimers-disease (accessed 2/12/2023).Google Scholar
VandeVrede, L, Gibbs, DM, Koestler, M, et al. Symptomatic amyloid-related imaging abnormalities in an APOE ε4/ε4 patient treated with aducanumab. Alzheimers Dement 2020; 12: e12101. https://doi.org/10.1002/dad2.12101 (open access).Google Scholar
Reish, NJ, Jamshidi, P, Stamm, B, et al. Multiple cerebral hemorrhages in a patient receiving lecanemab and treated with t-PA for stroke. N Engl J Med 2023; 388: 478. https://doi.org/10.1056/NEJMc2215148.CrossRefGoogle Scholar
Jäkel, L, Anna, M, De Kort, AM, Schreuder, FHBM, et al. Prevalence of cerebral amyloid angiopathy: A systematic review and meta-analysis. Alzheimers Dement 2022, 18: 1028. https://doi.org/10.1002/alz.12366 (open access).CrossRefGoogle ScholarPubMed

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