Evidence map›Paper›PMID 28057495›Full record

ArticleSleep medicine2017

Iron and restless legs syndrome: treatment, genetics and pathophysiology.

James R Connor, Stephanie M Patton, Konrad Oexle, Richard P Allen

Abstract read
In one paragraph

Article in Sleep medicine, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed, 3 pooled it
6.7field-weighted citation impact, top 3% 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

49 citing papers in PubMed, 3 syntheses or guidelines pooled it, 127 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Putative Animal Models of Restless Legs Syndrome: A Systematic Review and Evaluation of Their Face and Construct Validity.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2023
    Pooled it
  4. Altered iron metabolism and iron therapy in restless legs syndrome.Journal of neural transmission (Vienna, Austria : 1996) · 2026
    Review
  5. Article
  6. Iron therapy & restless legs syndrome: a narrative review.Sleep & breathing = Schlaf & Atmung · 2026
    Review
  7. Article
  8. Article
  9. Aripiprazole Has Potential Efficacy for Antidepressant-induced Restless Legs Syndrome: A Case Series.Clinical psychopharmacology and neuroscience : the official scientific journal of the Korean College of Neuropsychopharmacology · 2025
    Article
  10. Article
  11. Review
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Vitamin D and Restless Legs Syndrome: A Review of Current Literature.Tremor and other hyperkinetic movements (New York, N.Y.) · 2023
    Review
  18. Intravenous iron therapy alleviates symptoms of sleep-related movement disorders in children with minimal side effects.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2022
    Article
  19. Review
  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

4 authors at 2 institutions in 1 country.

James R ConnorDepartment of Neurosurgery, Penn State Hershey Medical Center, Hershey, PA, USA. Electronic address: jconnor@psu.edu.
Stephanie M PattonDepartment of Neurosurgery, Penn State Hershey Medical Center, Hershey, PA, USA.
Konrad OexleInstitut für Humangenetik, Technische Universität, Munich, Germany.
Richard P AllenThe Johns Hopkins University, Dep of neuroloy, Baltimore, MD USA.
Penn State Milton S. Hershey Medical Center · USJohns Hopkins University · US

Funding

THE IRON-DOPAMINE CONNECTIONP01AG021190 · NIA · JOHNS HOPKINS UNIVERSITY · PI EARLEY, CHRISTOPHER J · 2004 to 2009
$10.0M
Glutamate, hyperarousal and restless legs syndromeR01NS075184 · NINDS · JOHNS HOPKINS UNIVERSITY · PI ALLEN, RICHARD PUTNAM · 2012 to 2014
$1.2M
NIA NIH HHS P01 AG021190NINDS NIH HHS R01 NS075184
6 · The paper itself

Abstract

In this article, we review the original findings from MRI and autopsy studies that demonstrated brain iron status is insufficient in individuals with restless legs syndrome (RLS). The concept of deficient brain iron status is supported by proteomic studies from cerebrospinal fluid (CSF) and from the clinical findings where intervention with iron, either dietary or intravenous, can improve RLS symptoms. Therefore, we include a section on peripheral iron status and how peripheral status may influence both the RLS symptoms and treatment strategy. Given the impact of iron in RLS, we have evaluated genetic data to determine if genes are directly involved in iron regulatory pathways. The result was negative. In fact, even the HFE mutation C282Y could not be shown to have a protective effect. Lastly, a consistent finding in conditions of low iron is increased expression of proteins in the hypoxia pathway. Although there is lack of clinical data that RLS patients are hypoxic, there are intriguing observations that environmental hypoxic conditions worsen RLS symptoms; in this chapter we review very compelling data for activation of hypoxic pathways in the brain in RLS patients. In general, the data in RLS point to a pathophysiology that involves decreased acquisition of iron by cells in the brain. Whether the decreased ability is genetically driven, activation of pathways (eg, hypoxia) that are designed to limit cellular uptake is unknown at this time; however, the data strongly support a functional rather than structural defect in RLS, suggesting that an effective treatment is possible.

Indexed as

AnimalsBrainHumansIronRestless Legs SyndromeIronBlood-brain barrierDopamineGeneticsHypoxiaIronRLS

Identifiers

PMID28057495
PMCPMC5334282
OpenAlexW2551881775

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.