Evidence map›Paper›PMID 22551731›Full record

ArticleNeurology2012

Myasthenia gravis and neuromyelitis optica spectrum disorder: a multicenter study of 16 patients.

M I Leite, E Coutinho, M Lana-Peixoto, S Apostolos, P Waters, D Sato, L Melamud, M Marta, A Graham, J Spillane and 12 more

Open access · greenAbstract readMulticenter Study
In one paragraph

Article in Neurology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 94 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
94citing papers in PubMed, 2 pooled it
12.9field-weighted citation impact, top 1% 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

94 citing papers in PubMed, 2 syntheses or guidelines pooled it, 203 citations in OpenAlex.

  1. Guideline
  2. Pooled it
  3. Autoantibodies against Neurologic Antigens in Nonneurologic Autoimmunity.Journal of immunology (Baltimore, Md. : 1950) · 2019
    Trial
  4. Trial
  5. Review
  6. Review
  7. Article
  8. Article
  9. Isolated Optic Neuritis: Etiology, Characteristics, and Outcomes in a US Mountain West Cohort.Journal of neuro-ophthalmology : the official journal of the North American Neuro-Ophthalmology Society · 2025
    Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Review
  15. Article
  16. Article
  17. Review
  18. Article
  19. Review
  20. Neuromyelitis optica spectrum disorders with and without associated autoimmune diseases.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2023
    Article

34 more citing papers are in PubMed but not listed here.

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

22 authors at 1 institution in 1 country.

M I LeiteNuffield Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, UK.
E Coutinho
M Lana-Peixoto
S Apostolos
P Waters
D Sato
L Melamud
M Marta
A Graham
J Spillane
A M Villa
D Callegaro
E Santos
A Martins da Silva
S Jarius
R Howard
I Nakashima
G Giovannoni
C Buckley
D Hilton-Jones
A Vincent
J Palace
Addenbrooke's Hospital · GB

Funding

Medical Research Council G0401222Medical Research Council G0501898
6 · The paper itself

Abstract

objectiveTo describe 16 patients with a coincidence of 2 rare diseases: aquaporin-4 antibody (AQP4-Ab)-mediated neuromyelitis optica spectrum disorder (AQP4-NMOSD) and acetylcholine receptor antibody (AChR-Ab)-mediated myasthenia gravis (AChR-MG).

methodsThe clinical details and antibody results of 16 patients with AChR-MG and AQP4-NMOSD were analyzed retrospectively.

resultsAll had early-onset AChR-MG, the majority with mild generalized disease, and a high proportion achieved remission. Fifteen were female; 11 were Caucasian. In 14/16, the MG preceded NMOSD (median interval: 16 years) and 11 of these had had a thymectomy although 1 only after NMOSD onset. In 4/5 patients tested, AQP4-Abs were detectable between 4 and 16 years prior to disease onset, including 2 patients with detectable AQP4-Abs prior to thymectomy. AChR-Abs decreased and the AQP4-Ab levels increased over time in concordance with the relevant disease. AChR-Abs were detectable at NMOSD onset in the one sample available from 1 of the 2 patients with NMOSD before MG.

conclusionsAlthough both conditions are rare, the association of MG and NMOSD occurs much more frequently than by chance and the MG appears to follow a benign course. AChR-Abs or AQP4-Abs may be present years before onset of the relevant disease and the antibody titers against AQP4 and AChR tend to change in opposite directions. Although most cases had MG prior to NMOSD onset, and had undergone thymectomy, NMOSD can occur first and in patients who have not had their thymus removed.

Indexed as

AdolescentAdultAge of OnsetAntibodiesAquaporin 4AutoantibodiesBrainChildFemaleHumansLongitudinal StudiesMagnetic Resonance ImagingMaleMiddle AgedMyasthenia GravisNeuromyelitis OpticaAntibodiesAquaporin 4AutoantibodiesReceptors, Cholinergic

Identifiers

PMID22551731
PMCPMC3348852
OpenAlexW2018496511

What OpenQuestion holds

Textmetadata
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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.