Evidence map›Paper›PMID 21930661›Full record

ArticleBrain : a journal of neurology2011

Complex movement disorders at disease onset in childhood narcolepsy with cataplexy.

Giuseppe Plazzi, Fabio Pizza, Vincenzo Palaia, Christian Franceschini, Francesca Poli, Keivan K Moghadam, Pietro Cortelli, Lino Nobili, Oliviero Bruni, Yves Dauvilliers and 4 more

Open access · bronzeAbstract read
In one paragraph

Article in Brain : a journal of neurology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed, 1 pooled it
6.2field-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

60 citing papers in PubMed, 1 synthesis or guideline pooled it, 198 citations in OpenAlex.

  1. Narcolepsy and psychosis: A systematic review.Acta psychiatrica Scandinavica · 2021
    Pooled it
  2. Missense Variants in the A Isoform of FGF13 as a Novel Cause of Paroxysmal Dyskinesia.Movement disorders : official journal of the Movement Disorder Society · 2026
    Article
  3. Article
  4. Article
  5. Review
  6. Review
  7. Narcolepsy and rapid eye movement sleep.Journal of sleep research · 2025
    Review
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Narcolepsy type 1 features across the life span: age impact on clinical and polysomnographic phenotype.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2021
    Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Clinical Characteristics of Cataplectic Attacks in Type 1 Narcolepsy.Current neurology and neuroscience reports · 2020
    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

14 authors at 8 institutions in 4 countries.

Giuseppe PlazziDepartment of Neurological Sciences, University of Bologna, 40123 Bologna, Italy. giuseppe.plazzi@unibo.it
Fabio Pizza
Vincenzo Palaia
Christian Franceschini
Francesca Poli
Keivan K Moghadam
Pietro Cortelli
Lino Nobili
Oliviero Bruni
Yves Dauvilliers
Ling Lin
Mark J Edwards
Emmanuel Mignot
Kailash P Bhatia
University of Bologna · ITAzienda Socio Sanitaria Territoriale Grande Ospedale Metropolitano Niguarda · ITInserm · FRNational Hospital for Neurology and Neurosurgery · GBPalo Alto University · USSapienza University of Rome · ITStanford University · USUniversity College London · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Narcolepsy with cataplexy is characterized by daytime sleepiness, cataplexy (sudden loss of bilateral muscle tone triggered by emotions), sleep paralysis, hypnagogic hallucinations and disturbed nocturnal sleep. Narcolepsy with cataplexy is most often associated with human leucocyte antigen-DQB1*0602 and is caused by the loss of hypocretin-producing neurons in the hypothalamus of likely autoimmune aetiology. Noting that children with narcolepsy often display complex abnormal motor behaviours close to disease onset that do not meet the classical definition of cataplexy, we systematically analysed motor features in 39 children with narcolepsy with cataplexy in comparison with 25 age- and sex-matched healthy controls. We found that patients with narcolepsy with cataplexy displayed a complex array of 'negative' (hypotonia) and 'active' (ranging from perioral movements to dyskinetic-dystonic movements or stereotypies) motor disturbances. 'Active' and 'negative' motor scores correlated positively with the presence of hypotonic features at neurological examination and negatively with disease duration, whereas 'negative' motor scores also correlated negatively with age at disease onset. These observations suggest that paediatric narcolepsy with cataplexy often co-occurs with a complex movement disorder at disease onset, a phenomenon that may vanish later in the course of the disease. Further studies are warranted to assess clinical course and whether the associated movement disorder is also caused by hypocretin deficiency or by additional neurochemical abnormalities.

Indexed as

AdolescentChildChild, PreschoolFemaleHumansMaleMovement DisordersNarcolepsyProspective Studies

Identifiers

PMID21930661
PMCPMC3235554
OpenAlexW2098189088

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.