Evidence map›Paper›PMID 27703466›Full record

ArticleDementia and geriatric cognitive disorders extra

Progranulin Levels in Plasma and Cerebrospinal Fluid in Granulin Mutation Carriers.

Lieke H H Meeter, Holger Patzke, Gordon Loewen, Elise G P Dopper, Yolande A L Pijnenburg, Rick van Minkelen, John C van Swieten

Open access · goldAbstract read
In one paragraph

Article in Dementia and geriatric cognitive disorders extra. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed, 2 pooled it
4.3field-weighted citation impact, top 6% 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

52 citing papers in PubMed, 2 syntheses or guidelines pooled it, 82 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Review
  11. Blood-Based Biomarkers in Frontotemporal Dementia: A Narrative Review.International journal of molecular sciences · 2024
    Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. A 3'UTR Insertion Is a Candidate Causal Variant at themedRxiv : the preprint server for health sciences · 2023
    Article
  18. Article
  19. Article
  20. 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

7 authors at 3 institutions in 2 countries.

Lieke H H MeeterDepartment of Neurology, Erasmus Medical Center, Rotterdam, The Netherlands.
Holger PatzkeDepartment of FORUM Pharmaceuticals Inc., Waltham, Mass., USA.
Gordon LoewenDepartment of FORUM Pharmaceuticals Inc., Waltham, Mass., USA.
Elise G P DopperDepartment of Neurology, Erasmus Medical Center, Rotterdam, The Netherlands.
Yolande A L PijnenburgDepartment of Alzheimer Center and Department of Neurology, Neuroscience Campus Amsterdam, Amsterdam, The Netherlands.
Rick van MinkelenDepartment of Clinical Genetics, Erasmus Medical Center, Rotterdam, The Netherlands.
John C van SwietenDepartment of Neurology, Erasmus Medical Center, Rotterdam, The Netherlands; Department of Clinical Genetics, VU University Medical Center, Amsterdam, The Netherlands.
Erasmus MC · NLAmsterdam Neuroscience · NLNeurology, Inc · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPathogenic mutations in the granulin gene

methodsFluctuations in plasma PGRN (n = 41) and its relationship with cerebrospinal fluid (CSF, n = 32) and specific single nucleotide polymorphisms were investigated in pre- and symptomatic

resultsPlasma PGRN levels were lower in carriers than in controls and showed a mean coefficient of variation of 5.3% in carriers over 1 week. Although plasma PGRN correlated with CSF PGRN in carriers (r = 0.54, p = 0.02), plasma only explained 29% of the variability in CSF PGRN. rs5848, rs646776 and rs1990622 genotypes only partly explained the variability of PGRN levels between subjects.

conclusionsPlasma PGRN is relatively stable over 1 week and therefore seems suitable for treatment monitoring of PGRN-enhancing agents. Since plasma PGRN only moderately correlated with CSF PGRN, CSF sampling will additionally be needed in therapeutic trials.

Indexed as

BiomarkerCerebrospinal fluidFrontotemporal dementiaGranulin gene (GRN)PlasmaProgranulin proteinSingle nucleotide polymorphism

Identifiers

PMID27703466
PMCPMC5040889
OpenAlexW2487820682

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.