Evidence map›Paper›PMID 32617385›Full record

ArticleAlzheimer's & dementia (Amsterdam, Netherlands)2020

An automated clinical mass spectrometric method for identification and quantification of variant and wild-type amyloid-β 1-40 and 1-42 peptides in CSF.

Mari L DeMarco, Quyen Nguyen, Alice Fok, Ging-Yuek Robin Hsiung, J Grace van der Gugten

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in Alzheimer's & dementia (Amsterdam, Netherlands), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05002699 (Investigating the Impact of Alzheimer's Disease Diagnostics in British Columbia), which is not on this map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.1field-weighted citation impact, top 23% 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.

NCT05002699 unknown statusnot on this map

Investigating the Impact of Alzheimer's Disease Diagnostics in British Columbia (IMPACT-AD BC)

TypeobservationalSponsorUniversity of British ColumbiaRan2019 to 2023Enrolled120ConditionsAlzheimer Disease, Dementia, Cognitive Impairment, Mild Cognitive ImpairmentArmsAlzheimer's disease CSF biomarkers
3 · Its place in the literature

Who cites it

10 citing papers in PubMed, 19 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Review
  5. Review
  6. Review
  7. Review
  8. The Diagnostic Potential of Amyloidogenic Proteins.International journal of molecular sciences · 2021
    Review
  9. Article
  10. Clinical value of Alzheimer's disease biomarker testing.Alzheimer's & dementia (New York, N. Y.)
    Article
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

5 authors at 2 institutions in 1 country.

Mari L DeMarcoDepartment of Pathology and Laboratory Medicine Providence Health Care Vancouver British Columbia Canada.
Quyen NguyenDepartment of Pathology and Laboratory Medicine University of British Columbia Vancouver British Columbia Canada.
Alice FokDivision of Neurology University of British Columbia Vancouver British Columbia Canada.
Ging-Yuek Robin HsiungDivision of Neurology University of British Columbia Vancouver British Columbia Canada.
J Grace van der GugtenDepartment of Pathology and Laboratory Medicine Providence Health Care Vancouver British Columbia Canada.
University of British Columbia · CAProvidence Health Care · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionWe developed an automated liquid chromatography-tandem mass spectrometry high performance liquid chromatography tandem mass spectrometry (HPLC-MS/MS) method for multiplex quantification of wild-type (wt) amyloid β (Aβ) peptides 1-40 (Aβ40) and 1-42 (Aβ42) and detection of variant Aβ peptides in cerebrospinal fluid.

methodsThe multiplex Aβ HPLC-MS/MS assay was validated in a clinically accredited laboratory following regulatory guidelines, with Aβ42 calibration assigned to the ERM/IFCC certified reference material; sequence variants were additionally multiplexed into the method.

resultsSample preparation was fully automated on a liquid handler. The assay quantified wt-Aβ42 and wt-Aβ40 and detected sequence variants, when present, within the Aβ42 sequence. DISCUSSION: Extension of the HPLC-MS/MS approach for quantification of wt-Aβ42 and wt-Aβ40 to include known sequence variants increases analytical accuracy of the mass spectrometric approach and enables identification of cases of autosomal dominant Alzheimer's disease. Development of an automated workflow and selection of appropriate instrumentation enabled deployment of this method in routine clinical testing.

Indexed as

Alzheimer's diseaseamyloid‐β peptidesautomationautosomal dominant Alzheimer's diseasecerebrospinal fluidcertified reference materialmass spectrometryvariant

Identifiers

PMID32617385
PMCPMC7327131
OpenAlexW3038258480

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

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.