Evidence map›Paper›PMID 30606727›Full record

ArticleAJNR. American journal of neuroradiology2019

"Ears of the Lynx" MRI Sign Is Associated with SPG11 and SPG15 Hereditary Spastic Paraplegia.

B Pascual, S T de Bot, M R Daniels, M C França, C Toro, M Riverol, P Hedera, M T Bassi, N Bresolin, B P van de Warrenburg and 9 more

Open access · hybridAbstract read
In one paragraph

Article in AJNR. American journal of neuroradiology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed
5.0field-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

43 citing papers in PubMed, 80 citations in OpenAlex.

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  18. "Ear of the Lynx" Sign in Hereditary Spastic Paraplegia 76.Journal of clinical neurology (Seoul, Korea) · 2025
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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

19 authors at 15 institutions in 6 countries.

B PascualFrom the Departments of Neurology (B.P., M.R.D., J.C.M.) bpascual@houstonmethodist.org.ORCID 0000-0002-4467-7406
S T de BotDepartment of Neurology (S.T.d.B.), Leiden University Medical Centre, Leiden, the Netherlands.ORCID 0000-0002-3512-2468
M R DanielsFrom the Departments of Neurology (B.P., M.R.D., J.C.M.).ORCID 0000-0003-4924-2644
M C FrançaDepartment of Neurology (M.C.F.), University of Campinas, Campinas, Brazil.ORCID 0000-0003-0898-2419
C ToroNational Institutes of Health Intramural Research Program (C.T., N.J.P., M.D.G.), Bethesda, Maryland.ORCID 0000-0001-7139-0518
M RiverolDepartment of Neurology (M.R.), Clínica Universidad de Navarra, Pamplona, Spain.ORCID 0000-0002-4383-9127
P HederaDepartment of Neurology (P.H.), Vanderbilt University Medical Center, Nashville, Tennessee.ORCID 0000-0003-2699-4085
M T BassiLaboratory of Molecular Biology (M.T.B.), Scientific Institute Istituto di Ricovero e Cura a Carattere Scientifico E. Medea, Bosisio Parini, Lecco, Italy.ORCID 0000-0002-8236-1197
N BresolinDepartment of Neuroscience and Mental Health (N.B.), University Hospital Policlinico Ca'Granda, University of Milan, Milan, Italy.ORCID 0000-0001-6694-3595
B P van de WarrenburgDepartment of Neurology (B.P.v.d.W.), Donders Institute for Brain, Cognition, and Behaviour, Radboud University Medical Center, Nijmegen, the Netherlands.ORCID 0000-0003-4412-1616
B KremerDepartment of Neurology (B.K.), University Medical Center Groningen, Groningen, the Netherlands.ORCID 0000-0002-6569-2955
J NicolaiDepartment of Neurology (J.N.), Maastricht University Medical Centre, Maastricht, the Netherlands.ORCID 0000-0002-4480-4583
P CharlesDepartment of Genetics (P.C.), Hôpital Pitié-Salpêtrière, Paris, France.ORCID 0000-0002-3108-2171
J XuBiostatistics (J.X.).ORCID 0000-0002-3463-2327
S SinghRadiology (S.S., S.H.F.), Houston Methodist Research Institute, Houston, Texas.ORCID 0000-0002-3604-2961
N J PatronasNational Institutes of Health Intramural Research Program (C.T., N.J.P., M.D.G.), Bethesda, Maryland.ORCID 0000-0003-2354-2251
S H FungRadiology (S.S., S.H.F.), Houston Methodist Research Institute, Houston, Texas.ORCID 0000-0002-1177-682X
M D GregoryNational Institutes of Health Intramural Research Program (C.T., N.J.P., M.D.G.), Bethesda, Maryland.ORCID 0000-0003-3749-8343
J C MasdeuFrom the Departments of Neurology (B.P., M.R.D., J.C.M.).ORCID 0000-0001-9955-6954
National Institutes of Health · USHouston Methodist · USNeurology, Inc · USBP (United States) · USCancer Research And Biostatistics · USClinica Universidad de Navarra · ESIRCCS Eugenio Medea · ITLeiden University · NLMaastricht University Medical Centre · NLRadboud University Nijmegen · NLSorbonne Université · FRUniversidade Estadual de Campinas (UNICAMP) · BRUniversity Medical Center Groningen · NLUniversity of Milan · ITVanderbilt University Medical Center · US

Funding

Multimodal Imaging: Genetic and Environmental Effects in NeuropsychiatryZIAMH002942 · NIMH · NATIONAL INSTITUTE OF MENTAL HEALTH · PI BERMAN, KAREN FAITH · 2013 to 2022
$12.2M
6 · The paper itself

Abstract

background and purposeThe "ears of the lynx" MR imaging sign has been described in case reports of hereditary spastic paraplegia with a thin corpus callosum, mostly associated with mutations in the MATERIALS AND

methodsFour independent raters, blinded to the diagnosis, determined whether the ears of the lynx sign was present in each of a set of 204 single anonymized FLAIR and T1-weighted MR images from 34 patients with causal mutations associated with SPG11 or Spastic Paraplegia type 15 (SPG15). 34 healthy controls, and 34 patients with multiple sclerosis.

resultsThe interrater reliability for FLAIR images was substantial (Cohen κ, 0.66-0.77). For these images, the sensitivity of the ears of the lynx sign across raters ranged from 78.8 to 97.0 and the specificity ranged from 90.9 to 100. The accuracy of the sign, measured by area under the receiver operating characteristic curve, ranged from very good (87.1) to excellent (93.9).

conclusionsThe ears of the lynx sign on FLAIR MR imaging is highly specific for the most common genetic subtypes of hereditary spastic paraplegia with a thin corpus callosum. When this sign is present, there is a high likelihood of a genetic mutation, particularly associated with SPG11 or SPG15, even in the absence of a family history.

Indexed as

AdultCorpus CallosumFemaleHumansMagnetic Resonance ImagingMaleObserver VariationReproducibility of ResultsRetinal DegenerationRetrospective StudiesROC CurveSensitivity and SpecificitySpastic Paraplegia, HereditaryYoung Adult

Identifiers

PMID30606727
PMCPMC7048588
OpenAlexW2908172072

What OpenQuestion holds

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Registered trials

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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.