Evidence map›Paper›PMID 37658439›Full record

SynthesisOrphanet journal of rare diseases2023

Prognostic value of pathogenic variants in Lafora Disease: systematic review and meta-analysis of patient-level data.

Federica Pondrelli, Raffaella Minardi, Lorenzo Muccioli, Corrado Zenesini, Luca Vignatelli, Laura Licchetta, Barbara Mostacci, Paolo Tinuper, Craig W Vander Kooi, Matthew S Gentry and 1 more

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Orphanet journal of rare diseases, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
2.5field-weighted citation impact, top 10% 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

12 citing papers in PubMed, 10 citations in OpenAlex.

  1. Identification of a Novel homozygous Splice-Site Deletion inPakistan journal of medical sciences · 2026
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  9. Neurological glycogen storage diseases and emerging therapeutics.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2024
    Review
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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

11 authors at 3 institutions in 2 countries.

Federica PondrelliDepartment of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy.
Raffaella MinardiIRCCS Istituto delle Scienze Neurologiche di Bologna, Full Member of the European Reference Network for Rare and Complex Epilepsies (EpiCARE), Bologna, Italy.
Lorenzo MuccioliDepartment of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy. lorenzo.muccioli@gmail.com.ORCID http://orcid.org/0000-0001-6827-0099
Corrado ZenesiniIRCCS Istituto delle Scienze Neurologiche di Bologna, Full Member of the European Reference Network for Rare and Complex Epilepsies (EpiCARE), Bologna, Italy.
Luca VignatelliIRCCS Istituto delle Scienze Neurologiche di Bologna, Full Member of the European Reference Network for Rare and Complex Epilepsies (EpiCARE), Bologna, Italy.
Laura LicchettaIRCCS Istituto delle Scienze Neurologiche di Bologna, Full Member of the European Reference Network for Rare and Complex Epilepsies (EpiCARE), Bologna, Italy.
Barbara MostacciIRCCS Istituto delle Scienze Neurologiche di Bologna, Full Member of the European Reference Network for Rare and Complex Epilepsies (EpiCARE), Bologna, Italy.
Paolo TinuperDepartment of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy.
Craig W Vander KooiDepartment of Biochemistry and Molecular Biology, University of Florida, Gainesville, USA.
Matthew S GentryDepartment of Biochemistry and Molecular Biology, University of Florida, Gainesville, USA.
Francesca BisulliDepartment of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy.
Istituto delle Scienze Neurologiche di Bologna · ITUniversity of Bologna · ITUniversity of Florida · US

Funding

Brain Glycogen-Metabolism,Mechanisms, and Therapeutic PotentialR35NS116824 · NINDS · UNIVERSITY OF KENTUCKY · PI Matthew S. Gentry · 2020 to 2026
$8.2M
NINDS NIH HHS R35 NS116824
6 · The paper itself

Abstract

backgroundLafora disease (LD) is a fatal form of progressive myoclonic epilepsy caused by biallelic pathogenic variants in EPM2A or NHLRC1. With a few exceptions, the influence of genetic factors on disease progression has yet to be confirmed. We present a systematic review and meta-analysis of the known pathogenic variants to identify genotype-phenotype correlations.

methodsWe collected all reported cases with genetically-confirmed LD containing data on disease history. Pathogenic variants were classified into missense (MS) and protein-truncating (PT). Three genotype classes were defined according to the combination of the variants: MS/MS, MS/PT, and PT/PT. Time-to-event analysis was performed to evaluate survival and loss of autonomy.

results250 cases described in 70 articles were included. The mutated gene was NHLRC1 in 56% and EPM2A in 44% of cases. 114 pathogenic variants (67 EPM2A; 47 NHLRC1) were identified. The NHLRC1 genotype PT/PT was associated with shorter survival [HR 2.88; 95% CI 1.23-6.78] and a trend of higher probability of loss of autonomy [HR 2.03, 95% CI 0.75-5.56] at the multivariable Cox regression analysis. The population carrying the homozygous p.Asp146Asn variant of NHLRC1 genotype was confirmed to have a more favourable prognosis in terms of disease duration.

conclusionsThis study demonstrates the existence of prognostic genetic factors in LD, namely the genotype defined according to the functional impact of the pathogenic variants. Although the reasons why NHLRC1 genotype PT/PT is associated with a poorer prognosis have yet to be fully elucidated, it may be speculated that malin plays a pivotal role in LD pathogenesis.

Indexed as

Lafora DiseaseMyoclonic Epilepsies, ProgressiveDisease ProgressionHumansPrognosisTandem Mass SpectrometryUbiquitin-Protein LigasesNHLRC1 protein, humanUbiquitin-Protein Ligases

Identifiers

PMID37658439
PMCPMC10474773
OpenAlexW4386360187

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.