Evidence map›Paper›PMID 27412484›Full record

Trial reportEuropean journal of neurology2016

Nerve conduction velocity in CMT1A: what else can we tell?

F Manganelli, C Pisciotta, M M Reilly, S Tozza, A Schenone, G M Fabrizi, T Cavallaro, G Vita, L Padua, F Gemignani and 6 more

Open access · greenAbstract readClinical Trial
In one paragraph

Trial report in European journal of neurology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
3.2field-weighted citation impact, top 8% 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

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

  1. Genes · 2025
    Pooled it
  2. Article
  3. Article
  4. Article
  5. Junctions in Jeopardy: the neuromuscular junction is a selective pathological target in Charcot-Marie-Tooth disease.Mammalian genome : official journal of the International Mammalian Genome Society · 2026
    Review
  6. Article
  7. Basic Pathological Mechanisms in Peripheral Nerve Diseases.International journal of molecular sciences · 2025
    Review
  8. Article
  9. Charcot-Marie-Tooth disease in children.Annals of the Child Neurology Society · 2024
    Review
  10. Article
  11. Testing SIPA1L2 as a modifier of CMT1A using mouse models.Journal of neuropathology and experimental neurology · 2024
    Article
  12. Article
  13. Article
  14. Mechanisms and Treatments in Demyelinating CMT.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2021
    Review
  15. Article
  16. Article
  17. Article
  18. Review
  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

16 authors at 8 institutions in 2 countries.

F ManganelliDepartment of Neurosciences, Reproductive Sciences and Odontostomatology, University Federico II of Naples, Naples, Italy. fioremanganelli@gmail.com.
C PisciottaDepartment of Neurosciences, Reproductive Sciences and Odontostomatology, University Federico II of Naples, Naples, Italy.
M M ReillyMRC Centre for Neuromuscular Diseases, Institute of Neurology, University College London, London, UK.
S TozzaDepartment of Neurosciences, Reproductive Sciences and Odontostomatology, University Federico II of Naples, Naples, Italy.
A SchenoneDepartment of Neurosciences, Rehabilitation, Ophthalmology, Genetics and Maternal Infantile Sciences, University of Genoa, Genoa, Italy.
G M FabriziDepartment of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Verona, Italy.
T CavallaroDepartment of Neuroscience, AOUI, Verona, Italy.
G VitaDepartment of Clinical and Experimental Medicine, School of Neurosciences, University of Messina, Messina, Italy.
L PaduaDepartment of Geriatrics, Neurosciences and Orthopaedics, Università Cattolica del Sacro Cuore, Rome, Italy.
F GemignaniDepartment of Neurosciences, University of Parma, Parma, Italy.
M LauràMRC Centre for Neuromuscular Diseases, Institute of Neurology, University College London, London, UK.
R A C HughesMRC Centre for Neuromuscular Diseases, Institute of Neurology, University College London, London, UK.
A SolariCarlo Besta Neurological Institute, IRCCS Foundation, Milan, Italy.
D PareysonCarlo Besta Neurological Institute, IRCCS Foundation, Milan, Italy.
L SantoroDepartment of Neurosciences, Reproductive Sciences and Odontostomatology, University Federico II of Naples, Naples, Italy.
CMT-TRIAAL and CMT-TRAUK Group
University of Naples Federico II · ITUniversity College London · GBFondazione IRCCS Istituto Neurologico Carlo Besta · ITUniversità Cattolica del Sacro Cuore · ITUniversity of Genoa · ITUniversity of Messina · ITUniversity of Parma · ITUniversity of Verona · IT

Funding

trainingU54NS065712 · NINDS · WAYNE STATE UNIVERSITY · PI SHY, MICHAEL E. · 2009 to 2023
$19.6M
NINDS NIH HHS U54 NS065712Telethon GUP04002Telethon GUP05007
6 · The paper itself

Abstract

background and purposeCharcot-Marie-Tooth disease (CMT) type 1A is characterized by uniformly reduced nerve conduction velocity (NCV) that is fully penetrant since the first years of life, remains fairly stable through the life and does not correlate with disability whereas compound muscular action potential (CMAP) amplitude does. The aim of the present study was to analyze the large amount of electrophysiological data collected in the ascorbic acid trial in Italy and the UK (CMT-TRIAAL/CMT-TRAUK) and to use these data to gain insights into the pathophysiology of NCV in CMT1A.

methodsBaseline electrophysiological data from 271 patients were analysed. Electrophysiological recordings were taken from the motor ulnar, median and peroneal nerves and the sensory ulnar nerve. Distal motor latency (DML), motor (MNCV) and sensory (SNCV) nerve conduction velocity, and amplitudes of CMAPs and sensory action potentials were assessed. Electrophysiological findings were correlated with age of patients at examination and the Charcot-Marie-Tooth Examination Score (CMTES).

resultsNCV was markedly and uniformly reduced. CMAP amplitudes were overall reduced but more severely in lower limbs. DML decreased and MNCV and SNCV increased with age of the patients, whereas CMAP amplitudes worsened with age and also correlated with CMTES.

conclusionsThis is the largest sample of electrophysiological data obtained so far from CMT1A patients. Axonal degeneration as assessed by means of CMAP amplitude reflected clinical impairment and was consistent with a slowly progressive length-dependent neuropathy. All patients typically had markedly slowed NCV that did, however, slightly increase with age of the patients. The improvement of NCV might depend on myelin thickness remodelling that occurs during the adult life of CMT1A patients.

Indexed as

Action PotentialsAdolescentAdultAgedCharcot-Marie-Tooth DiseaseFemaleHumansItalyMaleMiddle AgedNeural ConductionYoung AdultCharcot−Marie−Tooth diseaseCMT1ACMT-TRIAAL/CMT-TRAUKhereditary neuropathiesnerve conduction velocity

Identifiers

PMID27412484
PMCPMC5603914
OpenAlexW2465463861

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.