Evidence map›Paper›PMID 33958861›Full record

Observational studyClinical interventions in aging2021

Plasma Amyloid-β Oligomerization Tendency Predicts Amyloid PET Positivity.

Jung-Min Pyun, Ji Sun Ryu, Ryan Lee, Kyu Hawn Shim, Young Chul Youn, Nayoung Ryoo, Sang-Won Han, Young Ho Park, Sungmin Kang, Seong Soo A An and 1 more

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in Clinical interventions in aging, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
2.0field-weighted citation impact, top 15% of its field
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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 19 citations in OpenAlex.

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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

11 authors at 6 institutions in 1 country.

Jung-Min PyunDepartment of Neurology, Uijeongbu Eulji Medical Center, Eulji University, Uijeongbu-si, Gyeonggi-do, Republic of Korea.
Ji Sun RyuResearch and Development, PeopleBio Inc., Seongnam-si, Gyeonggi-do, Republic of Korea.
Ryan LeeResearch and Development, PeopleBio Inc., Seongnam-si, Gyeonggi-do, Republic of Korea.
Kyu Hawn ShimDepartment of Neurology, Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul, Republic of Korea.
Young Chul YounDepartment of Neurology, Chung-Ang University College of Medicine, Seoul, Republic of Korea.ORCID 0000-0002-2742-1759
Nayoung RyooDepartment of Neurology, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea.
Sang-Won HanDepartment of Neurology, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea.
Young Ho ParkDepartment of Neurology, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea.
Sungmin KangResearch and Development, PeopleBio Inc., Seongnam-si, Gyeonggi-do, Republic of Korea.
Seong Soo A AnDepartment of Bionanotechnology, Gachon University, Seongnam-si, Gyeonggi-do, Republic of Korea.ORCID 0000-0002-8123-6183
SangYun KimDepartment of Neurology, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea.ORCID 0000-0002-9101-5704
Seoul National University Bundang Hospital · KRPeopleBio (South Korea) · KRChung-Ang University · KREulji University · KRGachon University · KRVeterans Health Service Medical Center · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeAmong other emerging amyloid-targeting blood-based biomarkers, Multimer Detection System-Oligomeric Amyloid-β (MDS-OAβ) measures dynamic changes in concentration of oligomeric amyloid-β (OAβ), which is considered the main pathogenic culprit of Alzheimer's disease (AD), in plasma after spiking with synthetic amyloid-β (Aβ). We aimed to investigate the predictability of MDS-OAβ on amyloid positron emission tomography (PET) positivity. PATIENTS AND

methodsA total of 96 subjects who visited Seoul National University Bundang Hospital for medical check-up complaining of cognitive decline and had undergone extensive medical assessment were recruited. Amyloid statuses were dichotomized into positive or negative based on visual assessment of amyloid PET. Plasma OAβ concentration was measured by MDS-OAβ. In the previous validation study, 0.78ng/mL was established as the cut-off value and the plasma OAβ concentration higher than or equal to the cut-off value was defined as MDS-OAβ positive.

resultsMDS-OAβ positivity could discriminate amyloid PET positivity with the AUC value of 0.855 (95% CI 0.776-0.933). Adding MDS-OAβ positivity to prediction models including age, MMSE score, and APOE ε4 status improved performance up to the AUC value of 0.926 (95% CI 0.871-0.980).

conclusionThe Aβ oligomerization tendency in plasma could predict amyloid PET positivity with high performance, and, when it is combined with age, MMSE score, and APOE ε4 status, predictability was improved substantially. This suggests the potential of MDS-OAβ as a useful initial stage test in the clinical and research fields of AD.

Indexed as

AgedAged, 80 and overAlzheimer DiseaseAmyloid beta-PeptidesApolipoproteins EBiomarkersCognitive DysfunctionCross-Sectional StudiesEnzyme-Linked Immunosorbent AssayFemaleHumansMaleMiddle AgedPositron-Emission TomographyAmyloid beta-PeptidesApolipoproteins EBiomarkersamyloidopathyAβ oligomerblood-based biomarkermultimer detection system-oligomeric amyloid-βpredictability

Identifiers

PMID33958861
PMCPMC8096417
OpenAlexW3111563778

What OpenQuestion 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 OpenQuestion graph.