Evidence map›Paper›PMID 34101796›Full record

ReviewThe journal of prevention of Alzheimer's disease

Diagnosis of Early Alzheimer's Disease: Clinical Practice in 2021.

A P Porsteinsson, R S Isaacson, S Knox, M N Sabbagh, I Rubino

Registry-linked trialOpen access · diamondAbstract readCase ReportsReview
In one paragraph

Review in The journal of prevention of Alzheimer's disease. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06868030 (Efficacy and Safety of Conventional Symptomatic Drugs Combined with Lencanizumab in the Treatment of Early Alzheimer's Disease), which is not on this map. Cited by 338 papers, 9 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
338citing papers in PubMed, 9 pooled it
54.8field-weighted citation impact, top 1% 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.

NCT06868030 not yet recruitingnot on this map

Efficacy and Safety of Conventional Symptomatic Drugs Combined with Lencanizumab in the Treatment of Early Alzheimer's Disease: a Multicenter, Prospective, Observational Study

TypeobservationalSponsorFirst Hospital of China Medical UniversityRan2025 to 2026Enrolled120ConditionsAlzheimer's Disease, MCI-AD, Early Stage Alzheimer&#39, s Disease
3 · Its place in the literature

Who cites it

338 citing papers in PubMed, 9 syntheses or guidelines pooled it, 637 citations in OpenAlex.

  1. Cost-effectiveness of testing biofluid biomarkers to diagnose Alzheimer's disease: a systematic review.The European journal of health economics : HEPAC : health economics in prevention and care · 2026
    Pooled it
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  6. Genetic and environmental risk factors for dementia in African adults: A systematic review.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Pooled it
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  10. Trial
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  13. Article
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  16. Transcriptomic Signatures of Microglial Phagocytosis Reveal Diagnostic Markers and Immune Landscape in Alzheimer's Disease.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
    Article
  17. Review
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  20. Loss of neuronal population organization links pathology to behavior in a model of Alzheimer's disease.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article

278 more citing papers are in PubMed but not listed here.

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 5 institutions in 2 countries.

A P PorsteinssonSean Knox, MBChB. Biogen International GmBH, Neuhofstrasse 30, 6340 Baar, Switzerland. Phone: +41413921976; Email: sean.knox@biogen.com.
R S Isaacson
S Knox
M N Sabbagh
I Rubino
Biogen (Switzerland) · CHBiogen (United States) · USCornell University · USLou Ruvo Brain Institute · USUniversity of Rochester · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Alzheimer's disease is a progressive, irreversible neurodegenerative disease impacting cognition, function, and behavior. Alzheimer's disease progresses along a continuum from preclinical disease, to mild cognitive and/or behavioral impairment and then Alzheimer's disease dementia. Recently, clinicians have been encouraged to diagnose Alzheimer's earlier, before patients have progressed to Alzheimer's disease dementia. The early and accurate detection of Alzheimer's disease-associated symptoms and underlying disease pathology by clinicians is fundamental for the screening, diagnosis, and subsequent management of Alzheimer's disease patients. It also enables patients and their caregivers to plan for the future and make appropriate lifestyle changes that could help maintain their quality of life for longer. Unfortunately, detecting early-stage Alzheimer's disease in clinical practice can be challenging and is hindered by several barriers including constraints on clinicians' time, difficulty accurately diagnosing Alzheimer's pathology, and that patients and healthcare providers often dismiss symptoms as part of the normal aging process. As the prevalence of this disease continues to grow, the current model for Alzheimer's disease diagnosis and patient management will need to evolve to integrate care across clinical disciplines and the disease continuum, beginning with primary care. This review summarizes the importance of establishing an early diagnosis of Alzheimer's disease, related practical 'how-to' guidance and considerations, and tools that can be used by healthcare providers throughout the diagnostic journey.

Indexed as

Asymptomatic DiseasesDisease ProgressionEarly DiagnosisGuidelines as TopicAlzheimer DiseaseHumansQuality of LifeAlzheimer’s diseasediagnostic work-upearly diagnosis

Identifiers

PMID34101796
PMCPMC12280795
OpenAlexW3171637117

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.