Evidence map›Paper›PMID 26207725›Full record

SynthesisMovement disorders : official journal of the Movement Disorder Society2015

Plasma apolipoprotein A1 associates with age at onset and motor severity in early Parkinson's disease patients.

Christine R Swanson, Yosef Berlyand, Sharon X Xie, Roy N Alcalay, Lama M Chahine, Alice S Chen-Plotkin

Abstract readMeta-AnalysisMulticenter Study
In one paragraph

Synthesis in Movement disorders : official journal of the Movement Disorder Society, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed
5.8field-weighted citation impact, top 4% 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

50 citing papers in PubMed, 85 citations in OpenAlex.

  1. Trial
  2. PEBP1 inhibition as a therapeutic target for neurological recovery in ischemic stroke.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2026
    Article
  3. Review
  4. Article
  5. Review
  6. Review
  7. Article
  8. Update: Protective and risk factors for Parkinson disease.Parkinsonism & related disorders · 2024
    Review
  9. Review
  10. Lipoprotein Particles in Cerebrospinal Fluid.Arteriosclerosis, thrombosis, and vascular biology · 2024
    Review
  11. Article
  12. Article
  13. Article
  14. Review
  15. Lower serum triglyceride levels linked to more severe motor performance in Parkinson's disease.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2022
    Article
  16. Article
  17. Review
  18. Article
  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

6 authors at 2 institutions in 1 country.

Christine R SwansonDepartment of Neurology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA.
Yosef BerlyandDepartment of Neurology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA.
Sharon X XieDepartment of Biostatistics and Epidemiology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA.
Roy N AlcalayDepartment of Neurology, Columbia University College of Physicians and Surgeons, New York, New York, USA.
Lama M ChahineDepartment of Neurology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA.
Alice S Chen-PlotkinDepartment of Neurology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA.
University of Pennsylvania · USColumbia University · US

Funding

CTSA INFRASTRUCTURE FOR PEDIATRIC RESEARCHUL1RR024156 · NCRR · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI GINSBERG, HENRY N · 2006 to 2011
$53.0M
Clinical and Translational Science AwardUL1TR000040 · NCATS · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI GINSBERG, HENRY N · 2012 to 2015
$26.2M
Project IV: "Alpha-Synuclein Strains & Diverse Synucleinopathies"P50NS053488 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI TROJANOWSKI, JOHN Q. · 2007 to 2017
$20.9M
TMEM106B in neurodegenerative diseaseR01NS082265 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI CHEN-PLOTKIN, ALICE S · 2013 to 2024
$4.7M
Unbiased Approaches to Novel Biomarker Discovery in Parkinson's DiseaseU01NS082134 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI CHEN-PLOTKIN, ALICE S · 2012 to 2016
$1.8M
The role of glucocerebrosidase in Parkinson's diseaseK02NS080915 · NINDS · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI ALCALAY, ROY · 2012 to 2016
$905k
Intramural NIH HHSNCATS NIH HHS UL1 TR000040NCATS NIH HHS UL1TR000040NCRR NIH HHS UL1 RR024156NINDS NIH HHS K02 NS080915NINDS NIH HHS P50 NS053488NINDS NIH HHS R01 NS082265NINDS NIH HHS U01 NS082134
6 · The paper itself

Abstract

backgroundDevelopment of robust plasma-based biomarkers in Parkinson's disease (PD) could lead to new approaches for identifying those at risk for PD and developing novel therapies. Here, we validate plasma apolipoprotein A1 (ApoA1) as a correlate of age at onset and motor severity in PD.

methodsPlasma ApoA1 and high-density lipoprotein at baseline, 6 months, and 12 months were measured in 254 research volunteers (154 patients with PD and 100 normal controls) enrolled in the Parkinson's Progression Markers Initiative (PPMI) study.

resultsLower baseline plasma ApoA1 levels associate with an earlier age at PD onset in early-stage, drug-naïve PPMI PD patients (P = 0.023). Moreover, lower baseline ApoA1 levels trend toward association with worse motor severity in PPMI PD patients (p = 0.080). Over 12 months of follow-up, plasma ApoA1 levels do not predict motor decline in the PPMI PD cohort. Finally, a meta-analysis of five PD cohorts encompassing >1,000 patients confirms significant association of lower plasma ApoA1 with earlier age at PD onset (P < 0.001) and greater motor severity (P < 0.001).

conclusionsOur results confirm the previously reported association of lower plasma ApoA1 levels with two clinical features suggesting poorer dopaminergic system integrity-earlier age at PD onset and greater motor severity-in early-stage, drug-naïve PD patients. This is the first report of a plasma-based biomarker evaluated in the PPMI study. Future investigations are warranted evaluating plasma ApoA1 as a longitudinal correlate of disease progression as well as investigating the potential of ApoA1 as a therapeutic target in PD.

Indexed as

AgedAge of OnsetApolipoprotein A-ICohort StudiesFemaleHumansInternational CooperationLipidsMaleMiddle AgedMotor ActivityParkinson DiseaseSeverity of Illness IndexStatistics as TopicTime FactorsApolipoprotein A-ILipidsapolipoprotein A1biomarkerParkinson's disease

Identifiers

PMID26207725
PMCPMC4609229
OpenAlexW1866717447

What OpenQuestion holds

Textmetadata
LicenceTDM
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.