Plasma p-tau181 and p-tau217 in discriminating PART, AD and other key neuropathologies in older adults
Yu, Lei ; Boyle, Patricia A. ; Janelidze, Shorena LU ; Petyuk, Vladislav A. ; Wang, Tianhao ; Bennett, David A. ; Hansson, Oskar LU
and Schneider, Julie A.
(2023)
In Acta Neuropathologica
146(1).
p.1-11
- Abstract
We examined whether plasma p-tau181 and p-tau217 are specific biomarkers of pathologically confirmed Alzheimer’s disease (AD). In particular, we investigated the utility of plasma p-tau for differentiating AD from primary age-related tauopathy (PART), as well as AD with mixed pathologies. Data came from 269 older adults who participated in the Religious Orders Study or the Rush Memory and Aging Project. Blood samples were collected during annual clinical evaluations. Participants died and underwent brain autopsy. P-tau181 and p-tau217 were quantified in the plasma samples proximate to death (average interval before death: 1.4 years) using Lilly-developed MSD immunoassays. Uniform neuropathologic evaluations assessed AD, PART, and other... (More)
We examined whether plasma p-tau181 and p-tau217 are specific biomarkers of pathologically confirmed Alzheimer’s disease (AD). In particular, we investigated the utility of plasma p-tau for differentiating AD from primary age-related tauopathy (PART), as well as AD with mixed pathologies. Data came from 269 older adults who participated in the Religious Orders Study or the Rush Memory and Aging Project. Blood samples were collected during annual clinical evaluations. Participants died and underwent brain autopsy. P-tau181 and p-tau217 were quantified in the plasma samples proximate to death (average interval before death: 1.4 years) using Lilly-developed MSD immunoassays. Uniform neuropathologic evaluations assessed AD, PART, and other common degenerative and cerebrovascular conditions. Plasma p-tau217 was more strongly correlated with brain β-amyloid and paired helical filament tau (PHFtau) tangles than p-tau181. Both p-tau markers were associated with greater odds of AD, but p-tau217 had higher accuracy (area under the ROC curve (AUC): 0.83) than p-tau181 (AUC: 0.76). Plasma p-tau markers were almost exclusively associated with AD pathologic indices with the exception of cerebral amyloid angiopathy. Compared to p-tau181, p-tau217 showed a higher AUC (0.82 versus 0.74) in differentiating AD from PART. For either p-tau, we did not observe a level difference between individuals with AD alone and those with mixed AD pathologies. In summary, plasma p-tau181and p-tau217 were specifically associated with AD pathological changes. Further, our data provide initial evidence that p-tau217 may be able to differentiate between AD and PART in individuals with comparable burdens of tau tangle pathology. These results demonstrate the specificity of p-tau217 for AD, supporting its use to identify patients suitable for anti-AD therapies including β-amyloid immunotherapies.
(Less)
- author
- Yu, Lei
; Boyle, Patricia A.
; Janelidze, Shorena
LU
; Petyuk, Vladislav A.
; Wang, Tianhao
; Bennett, David A.
; Hansson, Oskar
LU
and Schneider, Julie A.
- organization
- publishing date
- 2023-07
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Alzheimer’s disease, Mixed pathologies, p-tau181, PART, Plasma p-tau217
- in
- Acta Neuropathologica
- volume
- 146
- issue
- 1
- pages
- 11 pages
- publisher
- Springer
- external identifiers
-
- pmid:37031430
- scopus:85152121129
- ISSN
- 0001-6322
- DOI
- 10.1007/s00401-023-02570-4
- language
- English
- LU publication?
- yes
- id
- a53d86b7-8949-4938-b7b3-c9668c4f44b5
- date added to LUP
- 2023-07-20 10:40:12
- date last changed
- 2024-04-20 00:51:12
@article{a53d86b7-8949-4938-b7b3-c9668c4f44b5,
abstract = {{<p>We examined whether plasma p-tau181 and p-tau217 are specific biomarkers of pathologically confirmed Alzheimer’s disease (AD). In particular, we investigated the utility of plasma p-tau for differentiating AD from primary age-related tauopathy (PART), as well as AD with mixed pathologies. Data came from 269 older adults who participated in the Religious Orders Study or the Rush Memory and Aging Project. Blood samples were collected during annual clinical evaluations. Participants died and underwent brain autopsy. P-tau181 and p-tau217 were quantified in the plasma samples proximate to death (average interval before death: 1.4 years) using Lilly-developed MSD immunoassays. Uniform neuropathologic evaluations assessed AD, PART, and other common degenerative and cerebrovascular conditions. Plasma p-tau217 was more strongly correlated with brain β-amyloid and paired helical filament tau (PHFtau) tangles than p-tau181. Both p-tau markers were associated with greater odds of AD, but p-tau217 had higher accuracy (area under the ROC curve (AUC): 0.83) than p-tau181 (AUC: 0.76). Plasma p-tau markers were almost exclusively associated with AD pathologic indices with the exception of cerebral amyloid angiopathy. Compared to p-tau181, p-tau217 showed a higher AUC (0.82 versus 0.74) in differentiating AD from PART. For either p-tau, we did not observe a level difference between individuals with AD alone and those with mixed AD pathologies. In summary, plasma p-tau181and p-tau217 were specifically associated with AD pathological changes. Further, our data provide initial evidence that p-tau217 may be able to differentiate between AD and PART in individuals with comparable burdens of tau tangle pathology. These results demonstrate the specificity of p-tau217 for AD, supporting its use to identify patients suitable for anti-AD therapies including β-amyloid immunotherapies.</p>}},
author = {{Yu, Lei and Boyle, Patricia A. and Janelidze, Shorena and Petyuk, Vladislav A. and Wang, Tianhao and Bennett, David A. and Hansson, Oskar and Schneider, Julie A.}},
issn = {{0001-6322}},
keywords = {{Alzheimer’s disease; Mixed pathologies; p-tau181; PART; Plasma p-tau217}},
language = {{eng}},
number = {{1}},
pages = {{1--11}},
publisher = {{Springer}},
series = {{Acta Neuropathologica}},
title = {{Plasma p-tau181 and p-tau217 in discriminating PART, AD and other key neuropathologies in older adults}},
url = {{http://dx.doi.org/10.1007/s00401-023-02570-4}},
doi = {{10.1007/s00401-023-02570-4}},
volume = {{146}},
year = {{2023}},
}