Evidence map›Paper›PMID 27231704›Full record

ArticleAnnals of clinical and translational neurology2016

Plasma EGF and cognitive decline in Parkinson's disease and Alzheimer's disease.

Nicholas S Lim, Christine R Swanson, Hua-Ren Cherng, Travis L Unger, Sharon X Xie, Daniel Weintraub, Ken Marek, Matthew B Stern, Andrew Siderowf, PARS Investigators and 3 more

Open access · goldAbstract read
In one paragraph

Article in Annals of clinical and translational neurology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
3.4field-weighted citation impact, top 8% 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

35 citing papers in PubMed, 54 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. LC-MS/MS proteomics identifies plasma proteins related to cognition over 9-year follow-up.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
  6. Article
  7. Correlation between plasma epidermal growth factor and follow-up cognitive decline in Parkinson's disease.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2025
    Article
  8. Early diagnosis of Parkinson's disease: biomarker study.Frontiers in aging neuroscience · 2025
    Review
  9. Review
  10. Article
  11. Article
  12. Article
  13. Neutrophil-Mediated Progression of Mild Cognitive Impairment to Dementia.International journal of molecular sciences · 2023
    Review
  14. Alteration of Blood Immune Biomarkers in MCI Patients with DifferentInternational journal of molecular sciences · 2023
    Article
  15. Review
  16. Article
  17. Article
  18. Review
  19. Article
  20. Review
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

13 authors at 2 institutions in 1 country.

Nicholas S LimDepartment of Neurology Perelman School of Medicine at the University of Pennsylvania Philadelphia Pennsylvania.
Christine R SwansonDepartment of Neurology Perelman School of Medicine at the University of Pennsylvania Philadelphia Pennsylvania.
Hua-Ren CherngDepartment of Neurology Perelman School of Medicine at the University of Pennsylvania Philadelphia Pennsylvania.
Travis L UngerDepartment of Neurology Perelman School of Medicine at the University of Pennsylvania Philadelphia Pennsylvania.
Sharon X XieDepartment of Biostatistics and Epidemiology Perelman School of Medicine at the University of Pennsylvania Philadelphia Pennsylvania.
Daniel WeintraubDepartment of Psychiatry Perelman School of Medicine at the University of Pennsylvania Philadelphia Pennsylvania.
Ken MarekParkinson's Associated Risk Study New Haven, CT USA; Institute for Neurodegenerative Disorders New Haven Connecticut.
Matthew B SternDepartment of Neurology Perelman School of Medicine at the University of Pennsylvania Philadelphia Pennsylvania; Parkinson's Associated Risk Study New Haven, CT USA.
Andrew SiderowfAvid Radiopharmaceuticals Philadelphia Pennsylvania.
PARS Investigators
Alzheimer's Disease Neuroimaging Initiative
John Q TrojanowskiDepartment of Pathology and Laboratory Medicine Perelman School of Medicine at the University of Pennsylvania Philadelphia Pennsylvania.
Alice S Chen-PlotkinDepartment of Neurology Perelman School of Medicine at the University of Pennsylvania Philadelphia Pennsylvania.
University of Pennsylvania · USInstitute for Neurodegenerative Disorders · US

Funding

Alzheimer's Disease Neuroimaging Initiative - SupplementU01AG024904 · NIA · NORTHERN CALIFORNIA INSTITUTE RES &EDUC · PI WEINER, MICHAEL W · 2004 to 2015
$121.0M
Project IV: "Alpha-Synuclein Strains & Diverse Synucleinopathies"P50NS053488 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI TROJANOWSKI, JOHN Q. · 2007 to 2017
$20.9M
Unbiased Approaches to Novel Biomarker Discovery in Parkinson's DiseaseU01NS082134 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI CHEN-PLOTKIN, ALICE S · 2012 to 2016
$1.8M
NIA NIH HHS U01 AG024904NINDS NIH HHS P50 NS053488NINDS NIH HHS U01 NS082134
6 · The paper itself

Abstract

objectiveCognitive decline occurs in multiple neurodegenerative diseases, including Alzheimer's disease (AD) and Parkinson's disease (PD). Shared underlying mechanisms may exist and manifest as shared biomarker signatures. Previously, we nominated plasma epidermal growth factor (EGF) as a biomarker predicting cognitive decline in patients with established PD. Here, we investigate EGF as a predictive biomarker in prodromal PD, as well as AD.

methodsA cohort of PD patients (n = 236) was recruited to replicate our finding that low baseline EGF levels predict future cognitive decline. Additionally, plasma EGF and cognitive outcome measures were obtained from individuals with normal cognition (NC, n = 58), amnestic mild cognitive impairment (AD-MCI, n = 396), and Alzheimer's disease (AD, n = 112) in the Alzheimer's Disease Neuroimaging Initiative (ADNI) cohort to investigate whether low EGF levels correlate with cognitive status and outcome in AD-MCI and AD. Third, plasma EGF and cognitive measures were evaluated in the high-risk asymptomatic Parkinson's Associated Risk Study (PARS) cohort (n = 165) to investigate the association of EGF and cognitive performance in a PD prodromal context.

resultsIn both PD and AD-MCI, low baseline plasma EGF predicted poorer long-term cognitive outcomes. In asymptomatic individuals at highest risk for developing PD from the PARS cohort, low baseline plasma EGF associated with poorer performance in the visuospatial domain but not in other cognitive domains.

interpretationLow plasma EGF at baseline predicts cognitive decline in both AD and PD. Evidence for this signal may exist in prodromal stages of both diseases.

Indexed as

Alzheimer's diseasebiomarkercognitionEGFepidermal growth factorParkinson's diseaseplasma

Identifiers

PMID27231704
PMCPMC4863747
OpenAlexW2324979234

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.