Cited by 512Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchIntracerebral and Subarachnoid Hemorrhage Research

Amyloid-related imaging abnormalities in patients with Alzheimer's disease treated with bapineuzumab: a retrospective analysis

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Sperling, Reisa, Salloway, Stephen, Brooks, David J, Tampieri, Donatella, Barakos, Jerome, Fox, Nick C, Raskind, Murray, Sabbagh, Marwan +12 more·2012·The Lancet Neurology

Abstract

Background Amyloid-related imaging abnormalities (ARIA) have been reported in patients with Alzheimer's disease treated with bapineuzumab, a humanised monoclonal antibody against amyloid β. ARIA include MRI signal abnormalities suggestive of vasogenic oedema and sulcal effusions (ARIA-E) and microhaemorrhages and haemosiderin deposits (ARIA-H). Our aim was to investigate the incidence of ARIA during treatment with bapineuzumab, and evaluate associated risk factors.Methods Two neuroradiologists independently reviewed 2572 fluid-attenuated inversion recovery (FLAIR) MRI scans from 262 participants in two phase 2 studies of bapineuzumab and an open-label extension study. Readers were masked to the patient's treatment, APOE ɛ4 genotype, medical history, and demographics. Patients were included in risk analyses if they had no evidence of ARIA-E in their pre-treatment MRI, had received bapineuzumab, and had at least one MRI scan after treatment. We used Kaplan-Meier survival analysis to examine the distribution of incident ARIA-E from the start of bapineuzumab treatment and proportional hazards regression models to assess risk factors associated with ARIA.Findings 210 patients were included in the risk analyses. 36 patients (17%) developed ARIA-E during treatment with bapineuzumab; 15 of these ARIA-E cases (42%) had not been detected previously. 28 of these patients (78%) did not report associated symptoms. Adverse events, reported in eight symptomatic patients, included headache, confusion, and neuropsychiatric and gastrointestinal symptoms. Incident ARIA-H occurred in 17 of the patients with ARIA-E (47%), compared with seven of 177 (4%) patients without ARIA-E. 13 of the 15 patients in whom ARIA were detected in our study received additional treatment infusions while ARIA-E were present, without any associated symptoms. Occurrence of ARIA-E increased with bapineuzumab dose (hazard ratio [HR] 2·24 per 1 mg/kg increase in dose, 95% CI 1·40-3·62; p=0·0008) and presence of APOE ɛ4 alleles (HR 2·55 per allele, 95% CI 1·57-4·12; p=0·0001).Interpretation ARIA consist of a spectrum of imaging findings with variable clinical correlates, and some patients with ARIA-E remain asymptomatic even if treatment is continued. The increased risk of ARIA among APOE ɛ4 carriers, its association with high bapineuzumab dose, and its timecourse in relation to dosing suggest an association between ARIA and alterations in vascular amyloid burden.Funding Elan Corporation, Janssen Alzheimer Immunotherapy, Wyeth Pharmaceuticals, and Pfizer.

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Crossref · 10.1016/s1474-4422(12)70015-7

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  • The main adverse effects associated with administration of certain anti-Aβ mAbs during clinical trials were amyloid related imaging abnormalities (ARIA) identified on MRI scans.

    “The main adverse effects associated with administration of certain anti-Aβ mAbs during clinical trials were amyloid related imaging abnormalities (ARIA) identified on magnetic resonance imaging (MRI) scans.”

    From APOE Genotype Differentially Modulates Effects of Anti-Aβ, Passive Immunization in APP Transgenic Mice (2017) · cites this paper as [14]

    The Introduction (page not available) reports treatment-related MRI abnormalities in immunotherapy trials and identifies ARIA as a spectrum of those findings. The Results (page not available) document ARIA in bapineuzumab-treated patients. The paper does not establish that ARIA was the main adverse effect across trials of multiple anti-Aβ monoclonal antibodies. (LLM, conf=0.83)

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  • Escalation of anti-Aβ mAbs dose in APOE ε4 allele carriers may trigger increased rate of vasculotropic adverse events associated with immunization.

    “However one needs to be mindful that escalation of anti-Aβ mAbs dose in APOE ε4 allele carriers may trigger increased rate of vasculotropic adverse events associated with immunization [5, 8, 14].”

    From APOE Genotype Differentially Modulates Effects of Anti-Aβ, Passive Immunization in APP Transgenic Mice (2017) · cites this paper as [14]

    The Results report that ARIA-E risk increased with bapineuzumab dose and APOE ε4 allele number. The Discussion says the few symptomatic cases suggest a possible dose–APOE ε4 interrelationship, but there were too few cases to establish it. The evidence concerns bapineuzumab, not anti-Aβ monoclonal antibodies as a class. Page numbers were not supplied in our copy. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • ApoE genotyping is now increasingly considered an important component of the pre-treatment work-up for anti-amyloid therapies.

    “Accordingly, ApoE genotyping is now increasingly considered an important component of the pre-treatment work-up for anti-amyloid therapies [5, 8, 11, 12].”

    From Plasma ApoE proteotyping for ApoE ε4 stratification in the anti-amyloid therapies era (2026) · cites this paper as [8]

    The Results (page not provided) link APOE ε4 allele number to increased ARIA-E risk in patients treated with bapineuzumab, and the Discussion suggests dosing with attention to APOE ε4 status. This supports considering genotype when planning that treatment, but the paper does not establish that genotyping is increasingly considered an important pre-treatment work-up component across anti-amyloid therapies. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • Some amyloid β antibodies triggered amyloid-related imaging abnormalities (ARIAs) in clinical trials and ARIAs tend to be more frequent in APOE4 carriers.

    “Some amyloid β antibodies triggered amyloid-related imaging abnormalities (ARIAs) in clinical trials and ARIAs tend to be more frequent in APOE4 carriers [28].”
  • In about 20% of ARIA cases, they are associated with clinical symptoms and signs.

    “These included vasogenic edema (ARIA-E) and cerebral microhemorrhages (ARIA-H) that in about 20% of cases are associated with clinical symptoms and signs [13, 14].”

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Authors
Sperling, R., Salloway, S., Brooks, D. J., Tampieri, D., Barakos, J., Fox, N. C., Raskind, M., Sabbagh, M., Honig, L. S., Porsteinsson, A. P., Lieberburg, I., Arrighi, H. M., Morris, K. A., Lu, Y., Liu, E., Gregg, K. M., Brashear, H. R., Kinney, G. G., Black, R., & Grundman, M.
Affiliations
  • Brigham and Women's Hospital (US)
  • Butler Hospital (US)
  • Imperial College London (GB)
  • McGill University (CA)
  • California Pacific Medical Center (US)
  • UCL Queen Square Institute of Neurology (GB)
  • Columbia University (US)
  • University of Rochester Medicine (US)
  • University of California, San Francisco (US)
  • Janssen Alzheimer Immunotherapy Research & Development (United States) (US)
Corresponding author
Sperling, Reisa
Venue
The Lancet Neurology
Publisher
Elsevier BV
Published
2012-03
Volume
11
Issue
3
Pages
241-249
ISSN
1474-4422 (ISSN-L)
OpenAlex
W2122843800
Cited by
512
References
27
Citations by year
2026: 25 · 2025: 41 · 2024: 51 · 2023: 35 · 2022: 47 · 2021: 32 · 2020: 31 · 2019: 25 · 2018: 22 · 2017: 34 · 2016: 29 · 2015: 47 · 2014: 36 · 2013: 39 · 2012: 17
FWCI
29.81
Type
journal article
Language
en
Open access
Locations
  • The Lancet Neurology (publishedVersion)
  • PubMed (publishedVersion)
  • Amsterdam UMC (VU Amsterdam) - Institutional Repository (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Digital Academic REpository of VU University Amsterdam (Vrije Universiteit Amsterdam) (submittedVersion)
  • UCL Discovery (University College London) (submittedVersion)
  • Pure Amsterdam UMC (submittedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
Funders
  • National Institute for Health and Care Research (NF-SI-0508-10123)
  • Elan
  • National Institute on Aging (K24AG035007, P50AG005134, P30AG062421)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Neurology › Intracerebral and Subarachnoid Hemorrhage Research
Keywords
amyloid-related imaging abnormalities, bapineuzumab, Alzheimer's disease, amyloid-beta, ARIA-E, ARIA-H, vasogenic edema, microhemorrhages, APOE ε4, dose-dependent risk, risk factors, FLAIR MRI, adverse events
MeSH terms
Aged, Aged, 80 and over, Alzheimer Disease, Brain, Female, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Retrospective Studies, Risk Factors, Amyloid beta-Peptides, Neuroimaging, Antibodies, Monoclonal, Humanized

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